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 0xa9166e9d63d08f277d6698779b49d284ca0ea966ff2488e932bcb7d3f3421e6e. 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/b65d091e-fe78-41ed-a361-f0c20de73291.json and https://artists.proofprofile.net/proofs/artist/b65d091e-fe78-41ed-a361-f0c20de73291.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 0xa875337b5d0645c50813ef0ade73e9553947b82332d40530757dee00c4a4e06f. Chain 2 (Bitcoin): anchored in block 957720 (2026-07-12T15:26:09Z), 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/FR59R1744977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0092f9357b2153a56faeb0cffc0cae63ba3ea67ffa0bb257d4f0cb1eaa5d6d7. 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/FR59R1780131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2990131c0199c361397968980958fedf6b4d2dc217b994cd6de7527642acb392. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX281734286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2833649ac3ca165e962e4dcb0716885388f5f7d61ccba094b7f55babe62551f. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/FR96X1857692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4916ea460eb7c69a321d0cb7f4e900017c460f2e944b4f8f248e1bb15a6452e0. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:32:38Z), 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/FR2X41994447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e7c49eef4b8aefae0514bffc1f9faa8c4b7f5b6055888c022d8a585a0aff1b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBMA22043889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f478d5522f5bc67e0992df08831c07c2b99018cec60dbee79eae477d88953f. 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/GBMA22043890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44814c8c626f74e51b6e0c4141fb5c6b8fd0ac1e47d6069a7835a2837423caa7. 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/GBMA22043891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ded23589894bc39f2f21bd338814eaa3616aba08bf41e154db8552b0355837b. 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/GBMA22043892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57c95d864f085329cfa4a23b44b206c5e7e0756ebb765ec47d556ba257e5382. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:49:20Z), 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/GBMA22043893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0b68459689e3fd007b5488b12d8683377b6b9259a92961000b42a1aa7806da. 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/GBMA22043894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fe52b34a179f71a1c5bbe71f56d58f594fe5f8b4edc63e56e47461826efe9c. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/INU252204419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655ebe34ea98cc58fde5426ffdc4ac87fbd4db41f3f82ac7d9332c116d2c0a8e. 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/INU252204418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78c00270207e2e20a4636585f3312065ba4a70706482d9267fa3443bdd8e88b. 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/INU252204416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8facd6aaf299bb63146c73468668686569a61be17e6e88a56eee616485afc708. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/INC622218815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff724271e0c18530e21be7722f3a19238a297bc44a067f8ac0c0a35fad4052da. 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/US38Y2431952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df3533cec6bead39be201a5d468c6b699c9460d8e40159cf5ffb8ed5ebf590f. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/DGA0S2497603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cde98bedeb3169a6f37db81d75af6a4cf21bdc38ccebc84ddc0b1a9c581b20. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:30:26Z), 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/US38Y2432068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d08e552650455ba595c6ce89be70c42407ab23b98e78487f8368369c8c53cef. 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/US38Y2432071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5833f75d0e2d22bd9cabcebfad7ec263d533f65257f739dd67d724dfd982d985. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:08:01Z), 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/US38Y2432069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67492080c1fb9b468d9c55f3d1f28fb558cccbdd228c22aad8bcd3c5d1a47981. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/US38Y2432070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f968f5ec4f6f29799c61b61e6736448c0eae1c76cac8e3708964a909d40d524. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAJY2542418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0dad558be7c3d7ded2c9e43f48a2231efee9d867d52082d121f18cf6337db36. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USA2P2551212.