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 0xa33f59b769bc48d7f9e4bf909768006d5683917992f7353b101fd796f98a4272. 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/68b87c24-2fb5-4555-8137-cd1ab70c6869.json and https://artists.proofprofile.net/proofs/artist/68b87c24-2fb5-4555-8137-cd1ab70c6869.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 0x9399c4c01b02bd4156ff4bf3587de9841c0c561a0d0bde582e4fd4cdd7a76f45. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USDY41761182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf641006df2e3cea77dcf1ae0d653942865d6ce6a6f057f182281500517a34a8d. 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/USDY41761187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1615d3103e67e874fe121818184f157dfd92f16da2740f752e6ffa9e3c99ca. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USDY41772803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec657e69affe056adb8939239cdc020cdba2e85e96de04cc7904a88e518f58a7. 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/USDY41761234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96094982ad3b4956af210eb3b91fdb951e64a3bdb4190d8b9dcffcc83c4c3691. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/USDY41761235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff82863b64e27b5c3693bd24f9a79a07de23a44018f07123f463c414bf8fa8b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:55:38Z), 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/USDY41761236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fd5e32bd7016b21849c8cb19a59c8bc99e707628e59f6643deaedb76f64c8e. 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/USDY41761238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407fe236faf5395c12b7c91ce1f1e6332a732d67d08a0b108a437ff4ed6e42d8. 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/USDY41761239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a8fff2a3600fe4aa7374146d4f55fc0052ef2a3e94c8b6ab41dbf6920c440f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USDY41761240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5896b88f098f0e28da1cd99a909215c501629680d658cd5da0537be7f6440e. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:41:17Z), 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/USDY41761241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd048e4f1ab0fb12ad5725b1fa8b5827a08d2653cf9baae304680a1a4b7608840. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:42:40Z), 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/USDY41761242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5fc2712e21da9377bf3c5bd691b47f6cae4a25c9a9225d9ea13ab7a89cb61b. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USDY41761243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dd670f2ab2a1ca02e9a216e1b48fe61babd31e1a5b7a025a7ec787d54815e8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:35:45Z), 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/USDY41765781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631c1b5cb56556f646f192a19faab0ed3608de07700691e614b65a49bb606800. 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/USDY41765782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fa0118f170f85d10c2a044915a80bc38a81c1e45b3711c52ed3f31f27902af. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:02:23Z), 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/USDY41765784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810feb8a5bae5a64d030fe5e6e38cc9d97424d2251d80d906ef7fb73c46007ed. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USDY41765786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3189fa583c4fa4bc9c79cf0cff5b270355494a2c79adf81070e813bacc8e5bcb. 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/USDY41765787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2612cddb3d9ae6b642dae72fcc79c0dbc213c030a8c2d3d5750dfec333215e2. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USDY41761209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039625c38a8967df1d50ccea7be1d273bce21a98db415fe078704f4536b0dbb6. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/USDY41761212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6057b77f5eb3a2fa13d1c80fd586a849e8e5dbbb5d89499c0be12e194f9dc4. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/USDY41761214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd950fa814d07a3cccdfa496aef6dcf60459b6a5d5a2dcca7a22d566200d95d8c. 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/USDY41761215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9342a720a009b1f42f7ea360d4675bb5cf20029642f38dfa0fb03f44e60fccbb. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USDY41761216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa354158302bfbeb5c3eadf3d0b00717d4fda01afbd05658fe8190ee75bc19b84. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USDY41761217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee801c36d5f477a44d6580ddd2341d8a18c4bde1969c9305afea1353100c860. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:32:22Z), 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/USDY41761218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc89d204a48f4ff8a7d72fcf3b0d80516e033f08398fa2631cb00827da8b783. 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/USDY41761219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd3d9a0e67e740a1343ed0c585e35ba566c62fb41bf938816b909bec759e47f. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USDY41761220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94361ff86bc3aa75374bed3afff84734269e320da5d4bed705907cac470f4f8. 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/USDY41761221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93acbe7e58d179a66935ac1004f90c4eed1fd5ed49ff74b8a31a0f4492cfc959. 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/USDY41761222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c874c248739926cc8a7d8b2fa9986dec4c68222f2b32ee1ac8fcbaca62f67b. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:03:35Z), 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/USDY41761223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58129fa2252d04ee809723a949b28ad97407f2692cf9552300aa4aa65f22163b. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:07:36Z), 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/USDY41761224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19c4ea11cd6cb00b1c2b174ecf33d5251020d261b4130adf60807f008ef25d0. 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/USDY41761225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aaeb3be42efa83b9d9fa97704f36594f25cf87110a7aebb529f1d4fef1ff6d8. 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/USDY41761227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b138454e7476f806cef04b67ff1c8c4128f2dfef6ba65ffff2ad6331747ac4. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USDY41761228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b960f4d1f62928ab88916061903fac7d1745916467e8de46bcb10d9ec90e7a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGJ1817828.