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 0xdd89604937af549ba72f4cf22ad84febba57c3bcf645924a799f5e0f190fd7ec. 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/4ed2e276-fadc-4c2a-9992-32f294d96119.json and https://artists.proofprofile.net/proofs/artist/4ed2e276-fadc-4c2a-9992-32f294d96119.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 0xfe517421dfaa462620de7b7fe91a673eb41bb56342f46008d202b820438af963. 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/GX3Q92075816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5cbd6e1772c4125a4b3188d7c32b45de03abac615ab2c0e6f864dc049db3cd. 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/GX53U2005356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57e87b4b8738a40c02b5015ff1e08dee49351d6b7cbce1d92580b83225c131f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLFP2254267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf21d4eede954ca72714dffc60ba32500ad599143c3acb43df397ccef69ecd0d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:56:19Z), 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/GBLFP2284669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec8bdc41aa074b123db4f2a672f3d8643759bfe3069d82c541df53ef33e3d8c. 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/UKXN22289013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc1625f9f6ea46361d42ba5455a6b9229eae602bbd611f2a3ecc3e2cfdf5ac1. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBLFP2307086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2d22db6a2ac0d1cbb95187a5d55eb4e4c8e258badf75ea63b9d8547dbbfa25. 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/GBLFP2326464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc21eef7d6a6bb3fecea66533ea0b6f087eae947a0556d825951e5ab756a34b. 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/GBMA22342810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8dd9b2eec7674da92633c094076b39b4f7aaa41caaebca745e7ecf3cc5fbcc. 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/GX3Q92440570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312e6fc9891f53dcda70fe174b5772058b261c363e0a000e7bbc3e15a44dd0e2. 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/GX3Q92443283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587f5695ea0b5ba19b886e983530bd1cc86262af8c3a6ef19c370913f6b7e394. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ZAA012400261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587f5695ea0b5ba19b886e983530bd1cc86262af8c3a6ef19c370913f6b7e394. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ZAA012400261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd95e53187019505718033073a5b575770fce65deb755e862590cd5945f8e4c. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ZAA012400299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf29b9886139341f852acfc10c8e9e3c3ec0f7f589c32214ac7cc116ba1ce41. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:53:09Z), 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/QM6MZ2533971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3437262ad7bb8bb0c51b682e7aece76133cd04acd6cf9f986ee07bdc9e50627e. 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/ZA56E2419727.