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 0xd48625e105a327b8c287e56163b5ea36f69de9e6f81ae40cea18ce9b2f0dcafb. 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/ad85f90a-636f-4a60-901e-180d5ef5a6c5.json and https://artists.proofprofile.net/proofs/artist/ad85f90a-636f-4a60-901e-180d5ef5a6c5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Destination: Love; Live! At Cold Rice (Live at Cold Rice)
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 0xe3dc86127a685414ea56589c9ebd4aad2be768203c0fc532a1cd700310fb6286. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/US35U0409902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30232481fe3163e2af8eff8e714418b08b41668caeffdc7268af5647ff13d74c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US35U0409903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd85c31abededea08051c0f013837455357831f0c7c3d089f06f719deaff2166. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:29:36Z), 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/US35U0409904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2dd5deaa568d20452142a3ae94c6b0f43ee2d86de19d02f8db1ce8a8e9fe99. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US35U0410509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f789c08f0d33b666bbe7b10443284a9e7e42bd53b438f4c0f6983d5d7d82a8. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:06:47Z), 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/US35U0411301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fdf922db20507b64e741cc2e1801ee4870138ce6adbadba43f2c47277388113. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/US35U0411302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6419b72da9967b57e90ecbf28706991af2a83608384b6a41e3337bef47c3999a. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/US35U0411303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53fe0d52f6f9b60763899f7b1cb852df07871ed8086039dc3ddded108e9a6571. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US35U0411312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e87d96da2c2a467f3bce975ca816c93ff494e901fc793d2a0883e202f2e9393. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/US35U1900401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516b223a8110f6ced9164b7ade30a7368f0c71c932bcd61a0d435911851f9496. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/US35U1900404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b88ab4a30723cccc29d6d82079371c2639d09367636985acf77cfc4fe819161. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/US35U1900406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c30623412912248492203b7dee5c7c29383567af6fc9dd54d81ced14c50a896. 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/US35U1900407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb72ca600c39e924a1aa788eebd54a564cd928b38c2fe0f8eae2474788ee11f. 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/US35U1900408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714824fff1df7a584d8a01388b1af149f9a1c66e01771aeffbdb187d9ce62a68. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US35U1900501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e9fb7c8539d88d7a52b83ec5b018490470c5554fbc098e61f0aa9f35f44391. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/US35U1900502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5432563b6912cb17102624a483221b0ed71da6682a99c9821814dba0867e3b3e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/US35U1900504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb60365189174532e6b7052d821f0cf4b6a66fa84bec6fbac80910b91da43fbdb. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/US35U1900505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f66f9910cfa865a509e93e03d466ead88fb55bd67d521924253b9369dfda150. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/US35U1900507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6082e963f429272eb76b180494bdfddded385c445215de34bf35e6c1deeb1a. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/US35U1900509.