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 0x2922767ce7ef19da63a4d4c58d430bac6ec17d3a1740b5a318798dcbdf92baab. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5128821-7bab-454f-9103-b9e91d40f736.json and https://artists.proofprofile.net/proofs/artist/c5128821-7bab-454f-9103-b9e91d40f736.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 0x0fba2ed4bcc8198394121a0b106ab141b519e3169ce01631373c6807ef75face. 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/QM7281722734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af654402726839a9973ac65273451d7c03f0c94ba8ae7815ee90eed9dcacafe. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QM7281722735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d1984ff23209e06cdde0808d2c636d53a612b8798c0c99ef5d9228e6367f2c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QM7281722737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd53cda0bcbefaa8db372122a5396e6f1027cd6a3d164b7250eeae5613508cf. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QM7281722739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe9cd4b5bd0903194958684a630786c733e56df45940873ae5643b64b5fd5b9. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QM7281722740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7cccde455f6b6d9717d427ac167f8e23618b385aba59cdb41737b3f1e3549d4. 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/QM7281722743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4b791a8ee3eb7bad762a3effb36dfaafe0829b7a568c8628437d996d0dfef6. 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/QM7281727033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4771cb421432b8340c253ef838ebb8a851713641fd857b7a32d2ff8ff783606. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:55Z), 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/QM7281727037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b4270c07ffe99116f5a6b4306c356231b59d15709789d1765a1f816597a507. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QM7281727039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9aa0258fff44d4b64601e310e84210f21efa006fc5c931eeff386d815f03f5. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QM7281727042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe22081022783e87215bf0be7ee8611e54766153b203e3371a00666c44a00b66. 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/QM7281727043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d981b3a4c05b42bb6f1db4f03a5481699fa9ffbb3e2cbf21a92ef069ff677e. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QM7281727045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32dd0ce4be5cbb80ef2e38752d9829bf39e69a41fc8a4d0a379b54f65ad430c6. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:04:42Z), 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/QM7281727047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b9b0e2e7706e41c211fd67c34a5190cc1b3db5c80e0d365494f6a4aaeb32dc. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:13:19Z), 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/QM7281727050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28464aa26f2288422e99d5928ca5c7bc2eb27d54466163667fd8b16a2bde1849. 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/USZBG1115653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acf28eb1de259a327cbcd420e5ef1934496c27faab638dda39b33046f96a07a. 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/USZBG1115654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f9cbbae47a409b4545ec7eed352639e5a5cb3a82a0271ecda7b561aaffc9e2. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/USZBG1115659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf61cf54f44bed184c2ced729e82b07747799dc685c839799959022b7fe590a16. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USZBG1115662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8abc74507020bc5950a613e4329f84b4e459dafde8b2788f153d2b0b3393c9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USZBG1115783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece9e30f9d12c12e58247ac8e5c69727e6b27d79480307fe1851693ee742dd2e. Chain 2 (Bitcoin): anchored in block 957648 (2026-07-12T03:52:24Z), 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/USZBG1115784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af54cea243712f060320f4209905873c376526a416e121d91bc820676415888. 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/USZBG1115785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a187f4d3a509b623d58f1499eef7c44eedf0c62cbf1d61b7ec39fcea691209. 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/USZBG1115786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x239d5bb4935c98bf20a549c860cd036db5f5c29e14a9e9a34dad56b1d625587e. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/USZBG1115787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78d83bce0879e982c43c4a3d5ef4fad3bf5a659d5a07db0d99ee0f0d2bd4e95. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:36:47Z), 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/USZBG1115789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ddb0c879c0c8e7728d315cdb52c675a319aedc82598f9d20d41a71e4e74a22. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USZBG1115792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279a5e8bd01a27f357f14a0e982e8d7fe715f8c361b1e1bdfcd737b8e4c2dbf9. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:44:39Z), 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/USZBG1118739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe53aed9864691dcffd361d3d5d784d43d9de444c3e086ceaed4e886a070de1f7. 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/USZBG1118740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc509a10dc83ce26c0acc0b76d29b716fc9db2d64a46031acffeb74a9785428f6. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/USZBG1118745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5226833556512370ea333d000550ac769f5a159a9e438c092fb760e4287df247. 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/USZBG1118751.