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 0x02b426f6265a22cd6d1a014c8df77d7b6bf395365c40330119c0368d53194e9b. 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/2d731da8-1d26-4ae5-9ccb-ca8937adadef.json and https://artists.proofprofile.net/proofs/artist/2d731da8-1d26-4ae5-9ccb-ca8937adadef.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 0xbeb1a151ce084a609cd84d80122541f2ce5119ec45478fe39a99cd9b2baa0d6b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6N22152179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7f27ef52c8e05f15913802dc572ebba3374991753d6a7cc8f9df867c51cc3c. 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/QZHN52325098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58dc76562a92d4885d8806d257c8f66b4b2ba94a0df3a8ddd73621eaea40624b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN52325101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e0adf296dd7feea4fcafc5055bf0d9ce873c3c93b2b9e4cb37c37afb6007f7. 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/QZDA52371624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb782254d405bad9f2daf69ca6e97eb97f9962b80a67d8188e593f248e6b43f7c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWT2296564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9606f373fa105755bb01a7befac97fc47597af66a6fb5c5b9cbef281399a49e5. 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/GBMA21902030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67c67b2b742b995fa5f7ac447be1c7d798dbd6f75dfa3b0fa58753428f60e48. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBMA21902029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379a10a7531ba614a823675db5d2681b21eef929efc6c7976d042c1ac453cf65. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMA21902024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb314a0c82e4735275daa3297bd64424029ddc327f5441d1c96a0ab070871d3e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBMA21901966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e53e6212f456ee1d36d2bd7d754580875b13793bd32d69e870a22b35e92af8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:53:53Z), 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/GXF9Q2569176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c276c0ca158d1783465cf972137dd9494dd3bbc8353502ebc2c7b824c47dfd1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZN882509944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14f6751d9f6b2676cd6eac28a0ff3e8af649fc3d03b37e4252ce1433a2a04de. 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/ES75E2406195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebab30c0dda5acf018f27c53967e0bf986ce8daee365a2b032025721ac85d5f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZ662467430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e0adf296dd7feea4fcafc5055bf0d9ce873c3c93b2b9e4cb37c37afb6007f7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZDA52371624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce05cec3710a1fce6365bc202a215d70bbd3192fadb3a2e5309b97363e171a8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTB32263220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb782254d405bad9f2daf69ca6e97eb97f9962b80a67d8188e593f248e6b43f7c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZNWT2296564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed31064a4d78e38bd59c9099a42df735d53642cff84e94bd013d3a03c2c59fd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:55:12Z), 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/SE6QE2250208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3bb4f38e4673c2e40f56483d965591414d55bdb0101127a89143b703e48309. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBWUL2141588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa227f8105ef1b1d833ee32f7ee8735148b793bc365d105e9b1062ad912dbc23. 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/ESA011721005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52eb1b430b9160b83617f64ba524ae40e7785b54ae64a24a823f0396a787ac7b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:53:19Z), 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/COAKK2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8612a676e985a37e993717be36868873b23e185dd28da104387edeab9b6d1d4. 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/GBLFP2521235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9ca40e461a90eb3548fbae705793c71a13e688a21a9bf597e0effef9504436. 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/QZK6P2519184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604649ade10da3785eecae9e82bc0f5c65f37b639ee65361bac079db4d13d74b. 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/QM4TX2518218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb84002cd2041d38d4b0680fc0945ca18287fcf2d34c953961bee8d07e908bf. 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/QMDA62346545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4a3eed65591d6e8900a247e9cb02236d5137d8b4290be62716ab22c1e2f1c4. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TCAEU2088096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44660efb372d51e3709caa3d86046d4bd0fb6d3da09e3eb002fcbc3c2cb0e9f0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAER2042466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b30efa9cfacb9700a0a1f8c12b0079058451e22edb76f61a482b82bed43877f. 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/USDXS2013526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b79bcb98504b51399eec5758cc264e3dc3abfb5ed6477ee009e57ffdf1e2225. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6Q2277766.