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 0xfa894579d33ce685d2e3d052efaf4d91fd5432c0f935369ccab15d653a204b4e. 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/7c15d448-d497-446b-afda-aa657ed5475b.json and https://artists.proofprofile.net/proofs/artist/7c15d448-d497-446b-afda-aa657ed5475b.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 0xdf8219039b3c98e3e981012d5bd397d6c5743fcd5f6cb745f3166bc188a30d58. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBBEX0200717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d61ac2a72bfa0b9c606fce58eb919e8222a5c2cdfd30d99ac61e489417d92eb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:31:26Z), 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/GBBEX0200721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409b655696019943584afe4454267bb05e9c64d878107a57b485b88f5eef81ee. Chain 2 (Bitcoin): anchored in block 957653 (2026-07-12T04:35:02Z), 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/GBBEX0200723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b298f884cae74f0c2adbe6f0c26322794a6cb92784362622fbcd313384152a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBBEX0200725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4505db6b1a25699da8b4fa96ee4d7c2fe2e31ea2df1f1be32330ccb9bbd80b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBBEX0200729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09e9cd9516aa03bcea380588f7b573d537321276081c58d62a79ea6e9955c81. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GBBEX0501037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89819a7918de2a2bd411054502d020b1b4994015986ec6c362d3ad54e9c98ba. Chain 2 (Bitcoin): anchored in block 957661 (2026-07-12T05:37:10Z), 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/GBBEX9301413.
Ballad of St. Anne's Reel / St. Anne's Reel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8669ceb9214b93d4028f3cb75b74502c2c19d9ee9e74846336b88657e8c46f3b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBBEX9101414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b6bb585adedcece101fbbd4d563e54a1b50dd47142d9b807289855de2ae7f1. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:58:17Z), 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/GBBEX9101423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10988bfa71a66372b344042cfb62c068a94af75a544ae744cd2a6f8a53b6faa. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCABQ1306897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa356ba77d41e2e3e0c4b94d4a9d23358524a2bc3c9ef69c458f107becc5a5109. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCABQ1308155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee886e3b8959074280a439172c5b16462c279fb6cb8e35437ade15bed6b78d4c. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/TCAEJ1986851.