1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91a529c58eb742349a6feac97df9a186cb327715fe96523a9951f9941218cc2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b243e2ad-4775-48d6-a1b6-cd66662f0f8c.json and https://artists.proofprofile.net/proofs/artist/b243e2ad-4775-48d6-a1b6-cd66662f0f8c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3291e7fba1fc462d7980df63d75aff8892db739d0818a4a936e788eb94693049. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMER2070830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227074273ada6d804204bc9c8ef862814a171261430151a3bfeafcf55a2c6d1e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2133916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9436461da384a3522e135ea37801bedae2c18b3ea7ebc350212065b6f485aa1f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2195217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d1e38c4fc97397357920da344d12102e568f75d7130f41ed68aadf3a6a1bc0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCD4N2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dda25d7d5e99ffdc44333b5d1cd3ade5fc457fbb9e977734f0ca33d409c58c2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2160882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb963f5086a489aad06872c55d273eb5bd72bc8986ed91c5f06b0e70bb8b3322. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:03:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/NLX9G2100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa290479034635cd8ac85da1507c6608c41cc749fb1c63e0d2c6b48a89d892fd. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWY2180633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1380fc6c5154db5ca5e31d689b018b0d4704d4239f49416fcdeb704a7f005575. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAS2169493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79599f51ca3a356cdd0a597ca0c7829e3e1e13024c050208d3ba1097b4b27ca5. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2230424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc540887bba0be3dd0d94facf39b0e54113edaae3b149f25fee3e8aac41ef51bd. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9Z62100897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0eaf070a725d1f54cd2910a5198aef7352196e419c429b1399ce4abef434fa. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXDS92200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddae2a8f0029a9ce0fcd1479c32c6bdefdd057d0fcc4d04510815d29e9b3321. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2209965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f20fc5478a529950bdac7f85aa74d3a03bb68c020d41eac43d162f228b877b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2298261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ea8f41aa99ea89e3175732cb159b34f7b18f65d088418a73366e3ad17b0a65. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAX2262810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce719e3f0f0ed6116415f1a7d57359847d080ead4d5eab9680f44ca29a73be1e. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:11:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2267244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edc583cd59f1912f0451ae5ad44dcc5271780034fba876b0722dd0ccbe14c12. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:58:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2296662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f861a212cd14c21c524ef20eeb114300aa30ac3da5c2239ef42a5a63429904. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM3DF2290980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d8b6faf4278c90da235b53abc7dcbd676ce0405c2d778702802c1e93bb46b7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMANG2256840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800d210a578740fdc6f1b7059663b0f6da082dcde1fa3f436055c4e3a32f1c07. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMANG2447179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7b40d6001f5ce78d4df5e3c1473bc5524df608161be99c100a96f6aaf1a4b5. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2432681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30c4f99d6b26c796cec8549f4fa4bd44928fa658a27364aac171214a4163f58. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:34:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2432705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af68231af4517205dd526c9c2296220e9539561d69e810ce1f5a49f33395df3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2418215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ba651c0af99c41203a261ce3abbb89f45587ac8104a28f89ce11c3920304fd. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2444562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb31b07149e9fddc358fa979ab4a23ecda4ba03df032b8860ee4605733e63b0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2455765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac38b8400ade8d005987311ccd0a0e2a52a787e3d60e07d42beb3138deef6f04. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFR2473751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0eb7187feb9d50e26cc49e0e9864230ff58916f7efef456c1be2246bc4a517. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2455840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd383fe05f4d81ae404d8b71142dbff176646ee197923b42815c054df7f3fcd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2455853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874be9120f356045574a4d393982400ea683962d534d4c1b49e623ecb113647b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2455868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d09d3435d66c5ed4c95aa992bbbc81facf640b77c64cbc46267a93acfe4bbe3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9Z62400894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304de4894ce466566602418c162d2103e5e05815434828adcbc2eb1f1b74efff. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9Z62400895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b7829215cede9ba0ca7c9e7cb90e789f134e5e2ef6053601e6684906363c0f. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2493781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d426d3e005173987a95e1b050156cda1000bac3cf58d89149f5244f73e7d596. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9Z62400896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce972ba25282a01dcd111f31e0ac4024fd78c5dd918bea8165cb05294eda3185. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2506028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2295de3e807d02174f471c922e415b05d17f7d4bf313c5e0a3af3f8c4b2dcc. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEZC62580213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3edf26774e8257604fe3386f067f0d7f3b70ef87a05d3c4ee6f153a518e10c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2539396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aeab42a103f7cd2e57398fc9fc835cffc20968babdaa93c574bb37a07a7550e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:06:43Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2553176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e600e4e4c56510bc02b9a6dce8ab61b874869245dac013d326c2617f00fc6f1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2571171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1a3bbe5d5108926ae66dfc8b74b9009a0968bb86663eee99c287fe1e20c23c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2544662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa48277e6e5b85cc004cac603b86086e07bda0caec9c610fd6037bca09f4f844. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:46:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2579391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7990fffcbcb3e80b485d3293f9d3d4d0dc8d11d8bea25fba80f41a7c747975b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US23A1598035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787893c9ac6427c9dcafdcd1b03915b40548baf9663c15fc6b71df1026d722ee. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKZGC2405900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48ab8936d6aaaa6ef98764cf247523e34f01cc486b0d450a50790a30662ab84. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKZGC2406284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d1e38c4fc97397357920da344d12102e568f75d7130f41ed68aadf3a6a1bc0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BCD4N2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5d96d9ed55828b4ab3b660db77e7ba7bb3967d9272459b8a268f39b872903c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXDS92200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0149a0e5aa99d3e64018d32b6301343c9ecc83b143bf60f2483e7d174bbbc1af. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKZGC2300609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdd5b7ad8eb232989d79c7649d22cc5c29d277699eced7d7b28c0058741946e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKZGC2303314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a63c93513acdd096d8e9dba1db11389ebef5fd9fcfc3109f107db9389ce0f95. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/UKZGC2400713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0922c7c74c966ddfc52f903f6ae1e29ac60c0910ad58d45925387c24149bcf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52425640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe2b28b4ba9afe28eeb8a3a9b8f0a06fd48c308ff4017e2d1032128b30853ab. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:23:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52425641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9fba77fe9275812960e275ac31ee7f56502b1a5e396651222fbb863cd04cc53. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2400205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f46ae75880ab5c9f3a6d6f070fd293cc08aab4bc020a1422423abe8efa66b0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM3DF2495237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a0e835f90d3aae45728552e0c109d84209baa28b27c3f20a75dc4b48e2b5f5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USANG2223668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd5c6b4ef9c24bea9e5ebb435d94e57e90deac4573918e53b2846ccc64d21547. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2469608.
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1629866eb450f445a498a5bef7ab5f6c314dce3ab92d52575f755fde1236c512. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAU2142624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4560b0396def96cc653c49bdefb820d268ac5afd3b6155c33fe7519a87b93f24. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US3DF2414800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038922dafe1b8d0dcebcc61e907eb16629d0fa77e1feedd2f3979ec1e22c038c. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMEM2370417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4029701702013a338e1715d3f665bd57635cff7adc969d73231cc5bd032af6e. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52425642.