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 0xa63af9f2160ca88ece0111cdbad55790acc9193071a0a573b9b166ffb52b3962. 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/2a7023cc-2f2d-488f-8007-7896bab01720.json and https://artists.proofprofile.net/proofs/artist/2a7023cc-2f2d-488f-8007-7896bab01720.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 0x1b785e89d1945cf6fc35885a5809363900eb29989ae2d2b440a4c7f556231140. 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/USVPR0309092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5086b9fd6f9dbbb46de5c4e0bc410c2d3901191a6d18c5b8878e46119eb69171. 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/USVPR0309093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66745bcb571a1e82a60812136a3a0391f6f0b50226f77fb23140550c798a424. 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/USVPR0309103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8094c5f2626462c022744a897b830d5a84150191ad913c7af2e39787de8060. 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/USVPR0309094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c005f3a55d1fe455c596b2a164e091c10f482a64fe63a5e106d69205cebe5ef. 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/USVPR0309095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586cea19c0de01cebec0aef44262caa840137eb09e67b43ea044d4aab6ffa14a. 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/USVPR0309096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a22f947a42ee50f4fb982341c048ead64ac1b16b88873c477ce5380aed44ac6. 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/USVPR0309104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x918262b37afbaa24402d4a6060d5d99e7b425c8594f77c26fb0874f3f1060a62. 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/USVPR0309097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e89b5ce40a7e65612d0fc1542e40a248438c08af2e67f9b3559dc3ac2d3087. 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/USVPR0409618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e2257e98f44881328f6584e687bf1c45a901ecb74b1e1113be5745cb95f91b. 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/USVPR0309440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x428cca4f69e9db5084604584ababee1dfe745769a029404797a200fc505ae812. 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/USVPR0309098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x261ca5f68329af53e89e06b8da85b3e10abaa50132a491d5c9d9c108b64fadf5. 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/USVPR0309099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0118483ebd727088dd30e0b34f59f1f6fad2e620fb3ead94f257536c4d0b5af2. 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/USVPR0309100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c135f3f71132aa43117a5e9d28e13b30091fbbbd8ce6dac652b11df43cd255. 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/USVPR0309101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4112215807ce5d65f0a61d5f1fff2fdd55d9356be11d75c41717008cb396f9. 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/USVPR0309102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819b514b51dfced2639321e6d0ff85fcd6221c3f7790cf9da18c5831bbb3dc11. 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/USVPR0208553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b664220e283fc72bf4a33c33bda5c81bd1e8eda30dadd2e86e55c8ce286b073. 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/USVPR9300307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35321d1b7c2f786d48f222d2a90458d478ddbd8cf6259cc1100ca7987e11cdc9. 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/USVPR9300302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2a424906b1059debb4ef65b437bd10480df8597b190b32af3f01a63b359157. 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/USVPR9300293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a9e926905b8a6921c77bffd746cb70bc907cd5be5c7cb03e9f67abb1363a3d. 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/USVPR9300295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f541625b361b26b1af35ce8c9fdc2998debf480005aab485b074c32a3d66f42. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USVPR0410263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cb66f38455ba37f34181ba77cc1b17479c7ecc9cb90c368092709a2c2a9ea8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USVPR9300304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ed63bd63e7d52b07a09d113cdf56144c061b194163a421415a7823609b9564. 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/USVPR9300296.