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 0x55a2477de44c8a4266486cdbdd4d80a128374dc46e86d9b6f021baaaea21feaa. 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/7e8b8fbf-1b01-45d8-b7c3-a526062a685f.json and https://artists.proofprofile.net/proofs/artist/7e8b8fbf-1b01-45d8-b7c3-a526062a685f.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 0x55b5e972f94a86dd4cf3bfd74fc1d06a6181f70120b01f75bc53aa8a618bbc9a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/SEYOK1320491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d5451ac667ee08e1314c73e2b891a1f9397f1486aa49e09e8ac94b3a78e596. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SEYOK1320494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc84f4a2ed302c6d65846abadfa8232a72d78b4ec08040bf7cf9e61be5b9d03. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:03:28Z), 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/SEYOK1320495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cf46862ebf628f97623cfa92a21c3a33c61dfcf50564941faddc0fab2a1799. 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/SEYOK1320496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6665e7e5014f24de3f6dacfac6211302b7567f985234890eab424c4171ef5ae. 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/SEYOK1320499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74efb6e1fd276df3173b5f90eb105105464083b15a7316eaa03dc8edaabf300. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:12:06Z), 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/SEYOK1320501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4c71e0862e7293dd1ac61243047bb3b96a80a360df17e3e26e0f6493c5c2a0. 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/SEYOK1601689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8a4e7a0f3fa65b00b7c10f29163398d80cb17e2917818c34819b893392c191. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/SEYOK1601690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f67d614dccf74737d9713ca48eb3bcd700d2684b672bc478f05dfc1d89e806. 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/SEYOK1601693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9828b3bfcc07ab7b7063de98c2b103148fcea75aa0054cec865125027bb183cc. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:44:37Z), 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/SEYOK1601695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e7d9eb608061075c8cb92f9cbdf11ea64a19b27c95dc2d7448fdad014e39d5. 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/SEYOK1601696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3348952851f68f7959d26a60c0332e2824b8e32dfd65815208ee80a5c7cda63d. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/SEYOK1672656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4d3cf2f9ea389de883e4f4a84b153e4b428543aa09d04b3d387151960ecf7b. 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/SEYOK1672658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bf9a58fe79bc68230e91219c274761c7fdab346a672c1e7d406bce982412c3. 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/SEYOK1958108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6acf49f8e6268b7cac5cbbf3c331dfe8c1dff824e634d47e12394853a8808fd1. 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/SEYOK1958111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27e213197a15c7df066e42c6e9ef1d809e4eb5d6267389cff7ee967b1c428f1. 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/SEYOK1958112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09da8e50659986e3a4f6cfc4472f66ff5c028109e1013c1a057e4f260a99597. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:40:24Z), 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/SEYOK1958113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46169dc1b80cc49b15c06ed9866f21a9249047d4639faab865090aeffd338fa8. 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/SEYOK1959892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0842b3e878c5e40c732c3d0e8a8cb9f0f8adbbe41783816b4f28623153e48a19. 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/SEYOK2054167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d4c318d86c6a748d7b09398c6f677e49a12523588442c36065849838657355. 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/SEYOK2054168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a552defb1f9f61514e6e2ee25ff4294ec4a6319724fe1c803984a1ef15564c. 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/SEYOK2054170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e86201e703edcf9cffbd6bdd2b675cdc5d60465f7e9f3a7d8921771870f33d7. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/SEYOK2054171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c6324a0b96ed41dd7ab181a3e5d2d79347ff89f6a31afad521552c4c544644. 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/SEYOK2054175.