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 0xaa08b912e1489f8f6c208ec685109e23a3d2c08bd3b2bdd9780726d779eceaa8. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e1cffa31-a8ce-4700-bd2e-70ca015f2480.json and https://artists.proofprofile.net/proofs/artist/e1cffa31-a8ce-4700-bd2e-70ca015f2480.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Come in Out of the Rain (Alan Moulder Mix)
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 0x5a7f74f0239909357ec636fb70baf226ebf4a85322b168528654fe1945022a23. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:45:56Z), 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/GBBND0401388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b2c4872516bf09c49645f14beb0802a64db4f6d6b433b6ac5eaac73fd199dc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GBBND0401391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55553b0d097de279289ee4d34a6a0727cb47e045dca12087242a806632f2ba38. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:45:12Z), 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/GBBND0401390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262738c612b5a12edc7cd880221605db20c328c00ef9420ce8dae26327ea35ae. 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/GBBND0401338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d02e0158f31cf29baf9eeb01fcf5aa3eb51cdeed03f51b9c23abf8ed5dbdbe5. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T05:22:06Z), 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/GBBND0401426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5298e49ea8dfafa7d95c818451e22fec4f3577f26f96aeadd7d51056d0403327. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBBND0401394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1f13b9b16060f36531823c7bfebb16df4d8504049af1932df8c865a553ef77. 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/GBBND0901841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412c9500d8d85200afff1bd0fc2ca3995fe0214746c7515f126d3ec17c1c5d0f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBCQV0901065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fae4b7741c1413fcda69689a6a1c79d9ccd7103aa01054699b9ec22d088386e. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:08:44Z), 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/GBCQV1400235.