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 0xd2c3f946df51df769d2709ea8afc9c3a7d881dfbc8dd91a167dcdb52b555dbe1. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fce22892-5b8e-4b65-8533-a951f9e2a684.json and https://artists.proofprofile.net/proofs/artist/fce22892-5b8e-4b65-8533-a951f9e2a684.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 0x40aef375fad040e9dc295a9ee349136c2b0b35349d6c61609c316cbaa65bac1c. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:02:55Z), 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/NL8RL2528367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed46fa9f94aa0a65d6150482898f36a23ed511144fc5c9b282e4128d8b25b5e. 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/NL8RL2528368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749d7fe90f8922cbeb103ef9184fabf6a8b6d2174f18595fc8f1711d108dafe4. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/NL8RL2528369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7757d1894915acfa64cdddac446a96c809ee723cbaf18591ccbe7ef24ac992. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:52:11Z), 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/NL8RL2528370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c851b2ae3723e545009af4ff07f20791be219d771d7b0001617e30fff8d74b2. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:01:33Z), 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/NL8RL2528371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd344fb6658622490f61810af0b778d95e46e55ec2706a5e204987b5a96774ab. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:24:09Z), 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/NL8RL2528372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd076a68086dbac35b245c5a4367f9e28f1b2d5fe19accdd068aad5fcc5d6637. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:49:12Z), 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/NL8RL2528373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1712757c9685f928b638ef5608f31b5cb8e9be08cb48c1d1dd193dbb21cdfa9a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:55:05Z), 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/NL8RL2528374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd66fbf90c8751d7a7aafc53115baa76978f2293747dba91febc3c2368583bb8. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:02:30Z), 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/NL8RL2528375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82ea8f1439158d925e3ce4fdd57c875dfbbc7f292fe9baee8cdf8c03d7a98945. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/NL8RL2528376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa035fb613c179d06696fee20cc2b05445d35a1d55e88b2564d4a1d80d16cea4e. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/NL8RL2555387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb84fd70e83845f2d703e4db19461754a152140036324ce9092d80fe8a55db95. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:46:01Z), 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/NL8RL2555388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c90e57bf1ceb4877276ef02642d250758d9f4808ef51bccd7046dd48d4453e. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:51:03Z), 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/NL8RL2555389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afa6bc8397a91050ccc628c745142fc9e977b5ea8254d8a61370ec96bde86e7. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:03:02Z), 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/NL8RL2555390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063108ca70b4924c07f05c2dcd5a7c0277bffbf5260fe2e6044dc5bafe85cf57. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/NL8RL2555391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384b0f08cfcec8210f6263b2db22ec305b27100b6dbcf3b6943b22d5c791870f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NL8RL2425402.