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 0xae0a2a1a0438a301c43419b7ab35d6a93c3befa2bcbd6d9f7553c7739f6ccc86. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83241440-f02f-4d77-977c-99e2050ba6bd.json and https://artists.proofprofile.net/proofs/artist/83241440-f02f-4d77-977c-99e2050ba6bd.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 0x43a0aeffeaed3274913f6085706edb888cf1752b36e6ac453bb7c527a8a69a44. 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/USZUP1010666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2139081d9ad421fec66ab8be6fbcd15e8bc177ceafa8ad7f1748ce957ea6bb9f. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/USZUP1010667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6471f8ac9104e0980a20dc8e8eeda583a1bceda68fc1b1a206f4a3ffa9f69c9c. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:28:29Z), 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/USZUP1010668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84f017835c88abf51341f574aed3e4d2906dc42d8fc67a37b6686b1b950a8e7. 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/USZUP1010681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162ec552b8410bf429adcf1c5ab94d7a07372d021e996f24699ba19b7d90f5de. 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/USZUP1010683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd936713e69e44c950e8b05d6b61efd39b2b8e8b7370790fe9831ec0b5bbd24fa. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:04:25Z), 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/USZUP1010684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6abad57797eab7ace63defed7cd8af4a49c9a36b148c977de68846cd912dbb3b. 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/USZUP1010686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96422f0ddd0a4c0dc9770a5ad56dab89e3984a1d571a8fe5abebd8a1df344c39. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:05:12Z), 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/USZUP1010687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828b3f0e8268526f10cebecdb8173feede4dbfde0db4b41908e1e9a4e2d7c078. 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/USZUP1010688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa05a0a4dec6dad598b5140126ab1f24d48bb512e430655e9804101c1bcec44. 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/USDS10607338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c88bdf3224797b6b5162ddfbf353aff55b0b8dce91e47128af6188b7bea21b2. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USDS10607340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d200e7531fcab87328e7da0e7615cea1ead9ad5fba15d067fa7e3aab0a209f8. 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/MXUM72101173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1786c57c141b4266d5b92f49536303069fae3b721701603048c5899b9ee3a36. 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/MXUM72101179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29de9da65fb7405fb013e15c77e89c1353009865ed548b9e344d0abb7159544. 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/MXUM72101153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe6ee4de321070ca0ada7d285a77d3b5d262dffffd3e55f29716166841d123d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:39:23Z), 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/USHM91643447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db95c9870cd4f77630fbfc9d43e94a0a1496f6c7152297943e8380c75213c4f. 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/USHM91643463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9083ab1eb2dd70a23f5a1992275b023b155b0873d392690d95f793eb1268f466. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:27:59Z), 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/USHM91643466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5dfe73fc1f33bc92aee7474c81e2df38f205e8d60d77b27f74686ff7e59b6a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:18:48Z), 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/USZUP1010084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cfae05a8e284b81d976842bbb4bf2a1c213e5c5fed3fa61ed3fe9061c3ea18. 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/USZUP1010090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b440fc9ef3a0513bfef9be0dc77eab64fd3f24e541b3bebbcad478a2c2a5edb. 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/USZUP1010091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85e61066bfc021afede9413dd235fb9323bf6ebc328dc1b354b2503c57f7d0c. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:29:46Z), 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/USHM91643438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65be601a646358d2ac157510e04c5d3e4bfe639c329659ac1df4cee248134300. 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/USHM91643446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d30a0baebde7a93e8bfc5cda2b118804f48942fd5a4542d88c5ffdb85e68e6. 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/USDY41844487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848a139207a5ee8b2a1024b519ec476e0d1ce3fd8593ae8940a3ab66832c4787. 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/USDY41844489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b5c7787a6d87d471b42f0e22386bfbaf10ca0c0da4f1def9532e1ec675dbdf. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHZ42250436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9916b3883ad7238111351570c11a0cc92544ea36283cf2ec294d5933fbff3bb7. 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/MXD941804541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d8e8c79ac762497e7345be1dbd5e41ba1a58228d1eba60af18294da3eef98a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXD941804542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ea02cfe9c877d94e5127623c746011b20c90d12f3129dd5e92508bae6658d6. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:24Z), 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/MXD941804550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01340716b2a10a98e0f0f6361e72646b20456b4324e57c71fee8c6b16314511. 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/MXD941804552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c84942e292f7f439f966788764f3e6b358b6e17f65dc25931a4b8fd84fb56a4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:08:42Z), 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/US7VG2464813.