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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ff87310241b62d5b93c02d65c1303af6c41be3566bb7f12d5943343614e19f. 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/c693bab0-a3e4-405e-8068-cc8a0555ba6a.json and https://artists.proofprofile.net/proofs/artist/c693bab0-a3e4-405e-8068-cc8a0555ba6a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gentle Rain and Birds in Binaural Nature Harmony
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d7750be61953de99143849d3de524dd0ac9f304b3dcd1e34cd79dd3a7d31cb. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZTRX2450346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801104c240411a03008c2aee6ec05b00679ce15e0caa1cf60beea10470e6c6ff. 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/QZAKB2435859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78dee08a937da701cd5397fdec8c15783a6d73b0b2751811ff92c44015055cef. 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/QZAKB2415694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31d9658d55ab2b4e2d830bc6a5433f267ad9681d32471f6250b05a6fc633ae2. 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/QZAKB2375930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe865b9e3174f596790c54b711aa694d002c7c96adeb5e9515bf773ea8c242696. 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/QZAKB2358634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa102fa5095f3d401daf0b90bb286e8dc3668154c75b72abef05a52e419873d5c. 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/QZAKB2355398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b8be143d0bc25ea698e204dcd8755a54fd19c608ed49195f9149e2021b20a3. 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/QZAKB2353012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb91dccd008a3d940717d57acf3f629f8df050312792769be847823aca2ecce. 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/QZAKB2352224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3f62ca54c9d44c01280eccfab984be9ccda12ae15002010972e4ec9632d43f. 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/QZAKB2351067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1c3cd0bd58e9bc39fe9e55f24bec7bf959d07c529a45b3a9e5e1667e614a9f. 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/QZAKB2345045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c94a53d319382397d4090331dd60134597c1eed5cdead46da715aa6032c9fc7. 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/QZAKB2325620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ff2c26195f5f670dd6f6c1550dcec9dbe418a36b507986c5811fc755bb3bad. 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/QZAKB2325621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadb7ad45f6021364c56600b0742d5257731ebcb8b3b99a798689ce10cbd0c7f. 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/QZAKB2172950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6cfab3c60b5e79df25a6cc086f3273ec4f1348e976e3c0aa054d82c2a5fdf5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZAKB2172951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8a0bd27c62a50bbaa05ca3da682f47f893b953e378f53f1348ec6616f5f7f3. 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/QZAKB2165248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3c9b3dd325bffceea48d56e7c93971307d933de1a9ea7896eb344d5f5c8fc2. 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/QZAKB2165249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24156fc6a1e81b649ace6254dda3587a6ed2353963057801c5ad76ba94a1901d. 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/QZAKB2158343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1f1c6c370765da74a305962b02dc1354198d9e089686f4dd99058266028689. 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/QZAKB2158344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312ef34dd2c9c9f863062e9d165a244ab52858484e2ae82b181f205314a3a34d. 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/QZAKB2155230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc6c3d5f4c560d3ea5b686b11e36c94a68a9f7b58f88451ce5300352736d81a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZAKB2012623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5cf0d5b473c6c5a229d1517c83bf3c2ccd9984b2d8e5d82b85860e8bbc0ada. 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/QZAKB2012624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae5f163a907ac92b6cabb4a1b423ded8e9c2b5a6fb743421faef923e5c2476e. 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/QZAKB2012625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bc44e2d514521ad12e4143ae49b9e162800f781479745067c23e1a2458e6e08. 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/QZAKB2012626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49eb0fc41a02531362789709d4f8fa0007abe80910f2ac00a91da7b63bdd562f. 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/QZAKB2003428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10a4ca244ee96d6665c23906d6cffb4590e6087fe2e5948191dfa9ade09f618. 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/QZAKB2003429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f92a4e421d51d874b71d33a9bc546ff955d9ac6bbb2706449b5cc5dd295d656. 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/QZAKB2003430.