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 0x071315b905e1f4e3d5dc1e23749cf83cf50adb6bcbd01db9aedba614ba0d5884. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38e560d5-3762-4174-b26a-08343573d63e.json and https://artists.proofprofile.net/proofs/artist/38e560d5-3762-4174-b26a-08343573d63e.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 0x9195a443e265e777b33409a71d7018d11aab51ea7eb396ad9d70c07b03f784a1. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:58Z), 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/DEZC62493866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa775f79ad753de23fa108a817aa340faecd4e37e52ac87af9219d7d70bf8a4ec. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZMEN2479194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9341e057193662a23f7b7a8970cd36452f672aa0132ef2bae87654ab5c4911a5. 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/DEZC62414199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0a717855a4864ead2b6b0c05bc1496529f75e809ef07d54bf59458245fa43b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEZC62444364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0814ebff55fa81eb4d5444b681e6d7b582391ee44916f184bffc1254d173e863. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/DEZC62453579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b107a8a023bc8353cd946eb4a9e2e6e3c1e4bfd05e6efe5c86f1fb3728bb41. 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/DEZC62463242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8a1c46050244e2b4b03de85f1f296434554083f1d11c217e928f8761d08b59. 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/DEZC62463243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50344c415228b8fde12e7e8361859947bfd64cfdbe2450e4230febbd3118a81. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEZC62463245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea825d75e52e886aabef137d4ed9db545b5279057f37b34a866716b25e51142a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEZC62463246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f584cce0ded9ef90d9c0015f65663cd4a95122ab40ef1d15a6359246c2f38ec. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:56:30Z), 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/DEZC62463247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ed44db763a32c41464d7befe2af40c5faf59f00e3c9bd3ef1dbbae4e7774fa. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEZC62463248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cdbe6045b10d201caa7f470cc39a13584241c1d0ba0da1a2c0c69d6274e1d0. 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/DEZC62463250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4863367e088a35c6d42e89719238d5d33c90032b830480c758db03dd75a62b3a. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEZC62501226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b161c02025eacc62e53b28e7a3f06949259778d9dcf3f3a1bfa284574daa3b5. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:41:12Z), 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/DEZC62501227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa96ea7ad6234b10e74ed5a15026f5e339d4adf3db62fce29b0fd0231b35ece7. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/DEZC62501228.