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 0xe849592705ba1a7972ef755d8973e29af24449131f4724184b3f06e102c929e6. 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/3c7c5769-d6d6-4b1e-8535-44a965031f1d.json and https://artists.proofprofile.net/proofs/artist/3c7c5769-d6d6-4b1e-8535-44a965031f1d.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 0x0ec90b58bdba3c58b76c337ae2683729748a6a24c3ab949dcdf463f972a6849d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USANG2170908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c7eebc49a87b1e0675cf2b7da3d35507cd0b78f3477af710330ba0663764be. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GBKQU2147438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939573640bd7b9e5e3b7aa8f84afe16aa2d06c22dad2a5e41ab93e23cea57fca. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US3DF2158272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c6ab4a1b5c8ed4657e3f9ee68e7f269eaed19ad5cad1c8d0a75fcb46a8246d. 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/US3DF2158271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939573640bd7b9e5e3b7aa8f84afe16aa2d06c22dad2a5e41ab93e23cea57fca. 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/US3DF2158272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dd2ef83af429182094d15d8b86d08feb52b50188bdacacf05fba611aff6e377. 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/US3DF2177680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a016dd30610c1d889a27a2a9e88d595beabd9efc6f69d04cc9fe60593cb7a3b. 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/US3DF2177720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49d58030ab575f2a34881a70f27e976f27613bcb1b9bcbafdb1d7597936516b. 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/US3DF2177742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e51f32a5a97ae944387069106596392d19c92c422d16237e6f58ef1a9e04389. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US3DF2177758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045e53790e580b22eb0aa0c0c02f97aceda34b8afc4178651d63a3634010dee5. 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/US3DF2177823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440405c22f0ace608e9f1f88fefb615df2e439307873e13f58271cf1b688a304. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US3DF2177826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85d8baef55724b6f3dc1427884ca8b7096a58994279aba5a5ce17e58fb240f8. 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/US3DF2177891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7aa195c3ce1e3ad416a3a3319b295d2607e19efff32a9a33b9b2d437968090b. 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/US3DF2177903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327bf7aecdc61a06f4d6297def278d03dfa15d89dbbdf10767d6b4fc1c62388e. 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/US3DF2178075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0683f2cd5ea1c1867111b3309b1e3464638f41b4dbad4d955de3449c5556d711. 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/US3DF2178159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24afb4b231c2f3649bc155057109295b8a5d7c8e35c1ba674009f527bac215fb. 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/US3DF2178160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff7d525bb1d539d69b5cbead0af346f1c637f308ce8c474e0f8c053c5fd4416. 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/BCD4N2200092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a965a3f687ef7ba05bd1ce3d6dd584a0b7919b883cd3de0f0c295a298361962. 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/BCD4N2200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d901c3fd26490ef8621a2477b01cfe2d30fae48e6afd113f75d575274703f5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBKQU2129377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6016a603f5a8f25c09f7f6356c0c94f26edf308ff95b3442debb075dfacf67a3. 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/GBKQU2129376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec90b58bdba3c58b76c337ae2683729748a6a24c3ab949dcdf463f972a6849d. 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/USANG2170908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988ef21faed409cc6581776d262a5f4552528bc9a6dbf840999404646d7f9999. 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/BCD4N2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72be916c0b37d0ffb4726285b8f4aa6ea86b46da5c01b20d5aac5fea2bbda0d5. 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/BCD4N2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a965a3f687ef7ba05bd1ce3d6dd584a0b7919b883cd3de0f0c295a298361962. 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/BCD4N2200080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f76cc91bc770881ed1cfd2abed908ff9cf6ef11da18a00eb59c3e8e70748e1. 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/UKZGC2407688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb3c815c484b1373a35816b9def3b9c8428072fe64a631a5f9a085851a7c724. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBKQU2187749.