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 0xab102490e3b276ed6f795e5bcfb8db9550319d8d8e61f8dec5f73bc096f1cc3e. 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/1e440943-796a-4d72-a7cd-fa2227b4b9b9.json and https://artists.proofprofile.net/proofs/artist/1e440943-796a-4d72-a7cd-fa2227b4b9b9.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 0xbdae04c6c258b79bbdc648c6a8bb0f637ce9212d37759abbb7f985638deec37e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:21:27Z), 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/FR10S2227649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d4f3b778a9fd726838ca8a1b3d4cdc405eb707855be2f676a5f710deca2a38. 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/FR10S2227651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad892f1baf9cb8368ed57dc1e9d12bfd16564a07cdd85009e2b735bbd8ba2083. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/FR10S2227657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba6ad97cbcbb614ca5dd50000faebb2cb4385e0287e0fd568674079716403d0. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:20:34Z), 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/FR10S2227659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eeee69e2226a90b849564aeea735a80a8f86976c3db3c0d78195d5b7d16aae6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX452129143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af75032fdeaf10005d4f6371e2dfbfc83957c7fe6bfeacedc68eaba6c30336b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FRX452129144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x051d51bc89b07120ce2dcc156bf267c6e398a199f9fc08d0e79cc44ba620086c. 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/FRX452129145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701dde0851fecb07c115c68a83f9afa3a6271b5ff090e6c315b15059fd4dc7ac. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:37:04Z), 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/FRX762296389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6585872d2dbabbd88514206f9bd8e312ae53cac158f15b85b7846b2f8ea0c9. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/FRX762296390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2685ed4cd193486b77762ca5029a24860f4466667c3683e95f720269764d6d9. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/FRX762296391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3a3b6b5f9d5c078af8714c5e461c537e2a3819957c53e2fadfbfe32f594118. 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/FRX762296392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f2c6856ea71c66b562b6b3ffd2a269bd54c321dd032032072da743b780c72f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRX762296393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb139e693a9c093a30d5b3206c0997eae709c8706ed79ef483be931b80da42fa2. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/FRX762296394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2c4970424c92cf5fbc56a7d895822dc4f0499db3e031ba02d239ea016fd1c2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRX762296395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d19f918d565484e68be287c732326bfca7a6e9b56f0da4a225ef56330f806c2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/FRX762296396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eee5a6dca7945fa4aa5c07671fd29b9a98196259cb4dcc94d47177f1ca847bb. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FRX762296397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6f7e1688b59281daeaa61dfe852dac7419ba62b1f83c63bac240242a4f124c. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/FRX762296398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66826ef011d6a2f58cc291441e96cfd5831a70a430a831fea76b7d7bfbff6b5b. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:02Z), 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/FRX762296399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a4e2e1bd8a12d8580caa45b54c41bc9fed93730268a6bdf38056ceb94757e3. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:25:31Z), 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/FRX762296400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08183c05bdd237cbf1a69c4d1b0ac183c5e853d4b65856ced64b4e6ce9238d20. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/FRX202297313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73b67267e831dc7bb68232f5eed7d6aa0610f22987d56d4d8b811b59493b14f. 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/FRX202297316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36d93c174433d27f1152a4a039ffd9c8c4064b5277397a93133f76551abdcd6. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/FRX202297318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb535c6eff706e275439733be2292a71818135d0363995876ed4caf11a6c68d35. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/FRX202297321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a660234ae1b14f9bda8f6a5e07b656ca78c12cccf8c588aed1fedb25bad13a7. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T07:55:27Z), 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/FRX202297324.