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 0x6305ae21c23b4ffd65db16ea4ddfc8b24475cc22c378a685435ce1fb6940e6f9. 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/1eececf4-e88d-4bb2-bb75-f83cf473fe3c.json and https://artists.proofprofile.net/proofs/artist/1eececf4-e88d-4bb2-bb75-f83cf473fe3c.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 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 0x84e46b9817b924e51a9888159e3833dd8d24184053fca17e388e6e2568adb1f7. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/DEA892200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4857f2b6e4a6b2d10d649c680b4d701f4c6667a798cd5ecc7e4bc01e94160287. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:31:49Z), 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/DEA892200003.
Her House (Single Edit) [Star of Spring]
The Body Remembers (Single Edit) [Star of Spring]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b2284cd9b148ae957320dbe5360595a29bd49f3b1ca98caf4600f447dad552. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DEA892400517.
Some Other Time: 60 Years of Monica Zetterlund & Bill Evans - Waltz for Debby
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7532556e9af9c4a91585a06039042ae21a59f1e3677a05605e0922b452f4d839. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DEA892400512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae45b9d54290783c50f1e907b0165d52f79d2f3fa9db0f6f36cd51d9fff38b32. Chain 2 (Bitcoin): anchored in block 956777 (2026-07-05T11:01:08Z), 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/DEA892400513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91da8c071d56337740c6602aa9f3507a5f8336e816c9aeaa5a334f2ba4bb62b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEA892400514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0876d4da66b1987889f03f364f3bf4523b9e849393ea4655357795d1ef3fc0f2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEA892400511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52f1abd4c76531695b7080d5d1f4e53a4f42356b08f7f06be0e05258ebcb62b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEA892400516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc019cd7de8ccfa8b97ee2aa66cc461b5839981d8a244edfc8d8c28f1b65c63. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/DEA892400519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6b9e9a84f47cc6c44277d8913b4eee3f724f37da13a5813fc13a904940c421. 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/DEA892200343.