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 0x9695079bd8b408e0fd035b61f47426d42c29a7a49b2d35808981f5fdd13bd207. 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/4543adfa-7597-4610-8b29-34ac702775e6.json and https://artists.proofprofile.net/proofs/artist/4543adfa-7597-4610-8b29-34ac702775e6.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 0x45dfff9a3f9f9f1bccd9d07e681905013df6eaafc3be13a5ec079445936540af. 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/QMDA62279261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e22d9df4e793c83e98f1105a8b9af692b1ba372d3ec9f98bb6a07ef0f5e7d78. 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/QMDA62275511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a7c538815ebcf84675d3b7277267662f8d0e52207e828c7b729ec8dcb08e3a. 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/QMDA62279322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cc0b3f3d15434495e5ce92ef4ec2b0ea8f1c323a07646614a336a6ac7419d3a. 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/QMDA62279295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab12534042958ea3255dbed035421074e7c1dbdce7dc8cf89d2cc0612db08dd8. 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/QMDA62279316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d78068d43464be578f02440461170eea4f1e2e29c1fa95f630723c7ed66baa2. 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/QMDA62275561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11aef72700ae9d58eb1a91d4a14683e1811654dedee12571c121b3bf19d501ba. 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/QMDA62166090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad711585573a7b32ea6984217f07ac4c08fc88dec44ae19f712521db2b3addd. 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/QMDA62224550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b170b4b38cbbe101b091719c64035140e4a65a7d03f1e3a6076dd1eb422a618. 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/QMDA62279319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1e145c0f33210d98c774f70d324f787623f897c7bd1b61d6a4f19b42b039d8. 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/QM4TW2200328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa230dcdfad3f5aabd847d0346543f7bbdf1bedcf3b0f7b27cdca2814d8b0aacd. 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/QMDA62279329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9a2823fd2536024008fe357d9813ce692deae7d9158025c67bde3b7ebf2e0b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QMDA62279267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad711585573a7b32ea6984217f07ac4c08fc88dec44ae19f712521db2b3addd. 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/QMDA62224550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000430cb4bb027f7c43dec48f75996c98ebff5e76d304e3be56b5ad7886c07f6. 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/DESY21400469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953fdc9e43551c6a21a8a9ec2849d61d7fd80bb7ac860027a5ba720b77ae9b51. 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/DESY21400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51311f81e5572e0a1628f1e22643c17af0c1d951627e0c9177bbfbbe977f3822. 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/USGC62001198.