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 0x3271805ee197175731d5aa93caa05c83e0ec972573994bb84ebdb1f661b7df19. 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/2e054d32-63a5-40c8-b2c6-8ea4b6edd493.json and https://artists.proofprofile.net/proofs/artist/2e054d32-63a5-40c8-b2c6-8ea4b6edd493.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 0x26f861a1734c9914b32c48ca1ed8542e48298f138400d2a78ee9f3aabc680c2a. 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/BRRGE2400312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97def7fa911a157fe003ba27da6011eb8feeef00c221881fc8e7aca9454612c1. 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/BKLVW2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d98c0a83df166eb4b9b8e2162308e7ffdbbbfb2a8ba31409a7484351040641. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZGLM2135538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f41192bb6f65c8002ca63514b7f3f3e2c99828ab5cb01a2544d62d0353ae2d. 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/BCM9A2300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8527515501d760f10068fbc9989e12c99d8d6a2f7bff2c763da057d3d13868c3. 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/BKNDN2400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb3f0a1f21506aa9dc3021075f242411b0f3036df87a73941a52d1892457d42. 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/BKNDN2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63ca7c75997021ac48a057e40164e79805ac6c94cdf9a010129c8fd2e02559a. 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/QZGLM2254582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f861a1734c9914b32c48ca1ed8542e48298f138400d2a78ee9f3aabc680c2a. 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/BRRGE2400312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5439c3003c819c2d206c64a130a97888ec2f556f108a71b5274a8c36412ab6. 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/QZW9L2205865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0738206e0932bf9cdb0e4b906d28424859ac020b62fc678030bff718d1297c. 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/BXVOC2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9641015962a67f6a316441e5b9104a32724e552e36a27c2cec0a777ab682c5b. 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/BR5TG2400061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaaf46e00ca8f93ef3b15eb779f145cb66480c9626688bea5a4e1ec4b2d32bf. 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/BCM9A2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cf323f59430926f2d2a855121d087cd65203ae82bd18394ba2668130eb4813. 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/BX5UA2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d458f01f5c26dc2811e80e565b638cfac50995475e6e459d5e8b0e6541f07f4. 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/BX5UA2200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cc6364c2579d7c601fb07626a78298f8d7cb89e3375de8ad06fcd434734aef. 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/BK7652500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef27885effaad1834d34967462390f30901187ee8c0b32a2669ece18b7d4985. 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/BK7652500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5946ee129b4f1100016784c6f0a30762cae03140cac5e6a989844c90655158. 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/BKYSP2500003.