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 0x8b2ffa914bd11fc109515ece3c2b585029c05868798141b331b7cdcfa2cb9501. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/62c36f1d-ebba-4284-8120-2c80203e0675.json and https://artists.proofprofile.net/proofs/artist/62c36f1d-ebba-4284-8120-2c80203e0675.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x752d5de6b3291f28c7502d634c13ad3cae45f8b13c2c734b10fa8c5413e3a649. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEAR42544340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8e1f7bbe50c1031e228807c66037f1d244f1ea0dfaa5a925943f9faa331cfd. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:19:36Z), 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/DEAR42574934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6992e96c10d4e5f72b6326785dedffcecc230925772379b9c331451bd1315f. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEAR42565016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3840602d1f0e0f4bc7d42ca71ee090cedb2fbeefd1dd21dfe49cd8dc7f7cf8f3. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/DEAR42560505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e7e29c9051a1b3f399aaee36c88148bb0c347578e5f5b9008330967c7ee0bd. 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/DEAR42564825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41354c29dcf47ec89d9c09a44ea759eaf22ab411917db9f4f3518436653adda. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/DEAR42556876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec64fa51f9a00a9dd3c2a68a802177dd1739c7a499eda5174a9be358dd77f948. 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/DEAR42569512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd20f5a59654ff2a5f451ac1d6b40e240102e80b7c833a822f1cd2b6dea08ae. 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/DEAR42549362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f449a55f8dec4b750994d091d0ac355e6840accc07113e0549755353b2a326. 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/DEAR42548979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd19ebce89585d49dcb90378317b510618522d65845853a89c5f732f645b65f4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEAR42544409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ab2f803d0cee20ec67803e06c1a507e7fbca8ef013f53e63c95141c323b26b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEAR42554121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66abae928d97e5d0e97bad3733621272307f1c156a209e36ce1f3024c7f15aa2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEAR42532116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241e1e2e8da52ef241591987ff30acf7ee7a1f9cbf60c228a6c5347c716bb3fb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEAR42544248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6ab27a76e09496fd655536c65e172d7520a0e7186cd0f1b10d3430a218679c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEAR42554045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf02f5448c363ce272fde670b76ef9c575f22000f81e63abbaaa8234ab4980a6. 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/DEAR42528208.
Küss mich da, wo die Sonne nicht hinscheint
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c86c479d6aac310cd4a7f8c553385e24e7f57288bdec79d9586e84758f99f4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T13:59:56Z), 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/DEAR42522825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98daaa2dcdb74d3266d7dec714865f9e2f9558ebc55fcca76302774f800bb6a7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEAR42540616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecb93e34d64f1f92bcb4f344df953b120cbe243abb390df10ef6dde65a08967. 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/DEAR42528526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e8ea926c04a5750359d4e81afabaf0d1afedc1c5d797e7298e53ed469d7771. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEAR42545667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309e49d2d8ca82c69c5fb30cff6ce86d1972a8bc4a5319c1779d5d50c89ad238. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEAR42541051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572662b739b5c8c22d193a996cb8be5ae950f2b22cdd3ede922db01664bfabd6. 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/DEAR42520773.