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 0xeba10c1ee1857d3dfeae07c88f05f39a3db3caae5c62f6aa8db0a2b22361a01b. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4c84349-62f4-4084-9e12-6b2546c2a6ae.json and https://artists.proofprofile.net/proofs/artist/f4c84349-62f4-4084-9e12-6b2546c2a6ae.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 0xa3b17ad6004cb29674da29f3298e4db3fe142f877176ced76acc17efac5ad40e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/GX53U2665748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6d1adf7c5efb2c196da686961fe72e253317e8266da55478f9beaf2c5efa19. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:58:00Z), 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/GX53U2665749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68300a259b21f3d50f882082785395e299337cada3a7d8087a41999314fdfec. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:46:02Z), 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/GX53U2665750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba15dd9856d12ca7c107facd3a0c6ee741d1e1e32addd6308d511f950b3868d. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:25:38Z), 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/GX53U2665751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de0aabccc4ea07330bce92499c12467a66cf33d2650baa6ceb9066fd595364c. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:25:51Z), 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/GX53U2665752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd474ad6454e678892f0674f64c196e4ce66a77306cbc3473052f07cc7b4e469b. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:30:28Z), 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/GX53U2665753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22f59b82784fa1976c426c27ff052e33197c235cd2559c714d60ffe5e0454cc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX53U2665754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a77bd86375855984ef4063f0153547152317351e2da25891438dcb6bb13ec17. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GX53U2665755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13263e4188fdd2a38aa8df8f0fe1391428ebfa1e17c1353c8f2e5663dc484b7e. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GX53U2665756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48109edb8c2c6ea394e65a65f0907007e36be5860e585af912e0676d6176891. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX53U2665757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d10b913c5ea8fe410a081ad789165bef6f44067e974f205fb0d2149ef030dcd. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:10:52Z), 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/GX53U2665758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a8bdfb7e55a88dd4718c150eb7958740478e7cbf18f2aee8e4ad8913d7dea2. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GX53U2665759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x762e1ae1f838be558a5e3a515127bf2332f60165bec486e002ba1fb0c0209734. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GX53U2665760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fd7b046928de3d84c8551399b23718d17c569fc1b53132b57ba9a84b764207. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GX53U2665761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636bfd6526d68d9475ba99cea49a12b9c9630e957f3508c1943355b5147dbda9. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/GX53U2665762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05783a94a060b5bfc2c81aaa5114f139f2cef08ee2db4a9781df671c0534b6f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX53U2665763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ec17a529f64fc45a2fc2c7fce0b57a6efa036640c6cb4b2dc28057328444d2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX53U2665764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2129bbba62a7aeb2a9e7ec83e4c3b66d2d99b49bba47a582ecf632d82c2dbcf. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GX53U2665765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5023edc1690fcf6c7d1e1e8d6a7069bb079944e118f09d2ef30602a3c5d916e5. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GX53U2665766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2e5203f22daedb9341fde26131059d42d5a34d834c40e4728c04ecbd10ce59. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:11:57Z), 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/GX53U2665767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74467172fb6587953566dc30cb15890fd33c4058e1ce4eaa7d73946c32da18e0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:27:43Z), 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/GX53U2665768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ebb0f8cf2097e1196fade7221bd3148b6e8ecf41372a340d505c13d4e46a4b. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/GX53U2665769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dfcb14368c61ad8237b461f32e8ea8bebf64d90204ae388634adde7c797d73. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:33:38Z), 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/GX53U2665770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce014256092e1f05aa5adad55163d527c228cc4d2032c1262ace8d8bd45ac9bc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GX53U2665771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0acb765e8d37e609d1687886e8b789b8a75171544a2297a131bd355f28ba39a. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GX53U2665772.