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 0x4b67c98fdb14a2a000ea56a05fb3c031f0ce865d4a0158cd7ca5ee39f7c2adf8. 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/f6a08432-594b-41cf-9c89-2196ffb17c2e.json and https://artists.proofprofile.net/proofs/artist/f6a08432-594b-41cf-9c89-2196ffb17c2e.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 0xf0f0ddacb410ddcbd8f77fbd5bfb2228d3afd6164b717e29e5ae94b726182bdc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ESA012156608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b8690b1a965458e416344dc2d149073a1f43e2e7c4ebc8e2f1952fec5f0e8b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX3Q92332321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7d440c6634530e83548f4cebc9451170df7748180b24d07f302834b10adfe5. 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/QMFMF2328220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03d98106f379299bc63f2a17b04ffa2567af56b70685df46dfe0a525f7ef06c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMFME2388097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c0dbd5e9940bc5f16834b458778db89b420bd429f66ae59fd4c80beb68b933. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMFME2388074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c162b17973e30eec926944200bfbcaa77d811001fbf9c655a32e63f65ee7393. 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/QM6P42379658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a29c1c15899a3ab5c487747180fc293493cff6d6220d088508ab48ef0397ee5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM6P42391046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f079328230ba9eeffa4c0be970747cf40ef66230e64a739241c9a973962450. 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/QM6P42364628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca824941de5f5841484e8177e26e8395e2aaaaa637b2eb48c2a0f7a199393707. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22339837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7b3259d3e553e3033364a2f65f9fa6a0b5f81bfd9196718732ee935e520df0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBLFP2487000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab866602d79445f9787279a69876297fac5a2aba8b0c16b7f50477433e92b41b. 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/ESA092314546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668342f30d97162d21f5cfe8d69f2c82b145c02921b61fcd750ec53b8133992b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ESA092237396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564331d6c220dc99c345646e13d263906d20c6d97414b4c9083e721e70bf17c9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ESA092231375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8001cd2f745c2ef51114d9494a466160d26b6b3e91ed97ca7263bcc13e41a7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ESA092224939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfcbbdce3827c45f60e3f8a2327df526476d5d94d1ee358be896a5a7e747c9e. 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/ESA092221396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6736fd34cb6e2a3ef36de910a8abf565bda69c76beb1ee8ed1c203bec1dd14c0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ESA012228254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b8690b1a965458e416344dc2d149073a1f43e2e7c4ebc8e2f1952fec5f0e8b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX3Q92332321.