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 0x77efc272bda0af6f4da2dba0814a41b180cfeb54ac378fdbcc9fa7772a5231a3. 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/cb487b6a-85d6-42b6-abd1-d4a6a76d589b.json and https://artists.proofprofile.net/proofs/artist/cb487b6a-85d6-42b6-abd1-d4a6a76d589b.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 0x1f9088765ea6c10f60bba45e0d3ec97ba5e562506ee76a1b94a5fee3a5e8a65f. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:54:30Z), 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/AUMEV2251952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab74e777e6966fd9cb1cc7a4c3a0c5663336a6495961ff60b5b3bb1fb624aca. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AUGBT2214143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccceeeea943161f9bcf1efc431c3dc1ee7104c1c445797bc5c2320254230c1c. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTBA2245997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ccceeeea943161f9bcf1efc431c3dc1ee7104c1c445797bc5c2320254230c1c. 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/QZTBA2245997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6cc7c8d8ab90f8e6ee4ac83cc0f7660c0837c5bcc44feb7eeb4dbbf8dd50bb. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:46:33Z), 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/AUMEV2305659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0568eac0836e0dcdfaf43246718deef5c4a82135c0d4c47c734cba034bc175f1. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:58:06Z), 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/AUMEV2310626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9058451787f33ccff6910e421665a1c26551815cd309587f2cc6a9be1acaf0e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/AUMEV2332323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9e315cb571c260ca50aa85d0fa87cd5af1aafe3b8dfc7eb56a23bd1c3c6414. 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/QZTBA2245307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02601e324290fd5a2a73a5d0c0b3582b7979b026d6b440febc7069dc77ef89a5. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:48:24Z), 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/TCAIE2407767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8715ac6b8629a1afd763689527bd0be5664fc6eca5f3817f4676003ec914ed92. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:47:10Z), 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/TCAII2412475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e6076236dbfb239ca78ab6cc23a3e22c7ec728977032c66344944f844d2d23. 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/TCAIN2478954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08de7c38cdfecafee78cfe854f64cd7db57d7215aef5649ce831ea5fe788f69. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAIQ2498937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdc5f20bcef343b15f83f1615de88fa5ee7f5759b6f59ffa341a8627d828435. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:22:33Z), 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/TCAIY2424900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b9ce8d02390506daf36401c842ad8f4a4f82e92787f67005a755631423e491. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:17:48Z), 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/TCAJA2465988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075ce07d343c386887b6cc1802183f0fc29fee3fe6a3171324db1fb3b7c0e954. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAJC2441900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075ce07d343c386887b6cc1802183f0fc29fee3fe6a3171324db1fb3b7c0e954. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAJC2441900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffdc604807ef0092af727b0a74833316680ba799ae4936a0ff4a3b0fa14aa4d. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/TCAJE2535456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x129978358c8632dcddaff446b5ee4e8c6866884ba01931f3861d6326c78a50fe. 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/TCAJF2598215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f290e88f385c2b9bb62357ab4dc000a8df3834078c33ff40c6955daba6408c. 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/TCAJI2510753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0877e9060dfb72a7f42e39f50d9752968ce22ef6306fb075bd9583576ad719. 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/TCAJL2516036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9908a8fc2c98b785accb32d7dbd3e992547e933fb86bf91d2a70879ddc0d75. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAJN2543431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9908a8fc2c98b785accb32d7dbd3e992547e933fb86bf91d2a70879ddc0d75. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCAJN2543431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e95f8d0d19fc8390b1caeb7e6b4976297c1dfcf7e7edaf6ea1b14af541391f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAJS2541045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9590f0fb0d3535a8c7149124457c1cf38b74ba567b4c3bfd83b3bb352dd3dc62. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/UKZGC2506092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4670ec0a1983d869262263eb4848a70ae9f11395be247aa494d8bd2bfd69682f. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/UKZGC2506803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d1c3800d55cd9c39dc51101ca57d5f3dcef472a10c5128c7f9c00016fccf99. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/UKZGC2508424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d107a4491c53ebc28277831170dfa489d093c2f86e0c9621472ec138da322bf. 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/TCAHX2493439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3c16fbdfc8c135b23f9034049e2b98bedd1bbdf901f8b79e868263af86ddc6. 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/TCAHW2400462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa88e46f2e61c690c4eb153a4ea4c4ed4a3efaef3d7376b15c4c8c316f3dee6. 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/AUGBT2310417.