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 0x00933e6cb27963eb1733f07728b142cc66dcc5355da3baed836cbe2b813dc917. 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/6e957e51-7c61-4878-ac69-82fa2536edfb.json and https://artists.proofprofile.net/proofs/artist/6e957e51-7c61-4878-ac69-82fa2536edfb.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 0xd0677ca50fb125de4a3c40958925169af80c7d7730a6165e840e07498e03566f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHN72186774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc61a3bf27f2267bbee3c6cd58f48374d61a298ad116eff5baf5cef6a32d897. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN92141001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66aaf1ff540008e76e249e2b081d4359581cac97876808ea77f27e6d2bac2c17. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN92141002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5934170a7ed5e6255cb36d4b55ba70560a5ba959b0869389d954269f1b3a96e0. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZHN92141003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41a6ab96ea761d7e09eefbc4da9978cfc95fa375d22d45739c6bccb340bf28a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHN92141004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1658aebbeebb60087965bec40b494e2b74ac7fb005a37b3f3333e93f460cf06. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZK6L2122754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c56060b45def613d61d3493c7af9c92bcf49f743f6cd120dc0cc10aabd0d94. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZK6L2122755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7511fe62017f0d85ea94ed0de29c831f5e64122213d0843e66171ec7750d3c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:34:45Z), 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/QZK6L2122756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bb02d146e9f03e79e6a2293ad595ec6b8e91848d43c2652b9f1cebc416428b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6L2122757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751d315bbf91ac3246026376d0f6147b49d70de4ad1085a4cd03b094c35af003. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZMEP2128923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad72cca58d6ae4a6c9f7debbf1144c5d6315a8ca32b949f04866656aae23d2e7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:19:59Z), 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/QZMEP2128924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4beddd51dbe031a3c1d946e144e7b344ca106480ed5c24d4b9b59d233391edff. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:52:53Z), 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/QZMEP2128925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5e573709646f53690dc2c6538ab18a5d6d9ba69c93a6799f4be29481034a59. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:03:19Z), 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/QZMEP2128926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18922d9b06b7298f1275c4d9769a5fbfaed505c852217f3d7513c7726449be17. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:01:22Z), 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/QZNWV2106012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd828f22528ef510f179c7b5e6d89f91d16d383992c498f7575828dbe1c6bbc18. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZNWV2106013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963fe24c1ca65d6abee92ed9a269e26384c9609831b647f4436d4251bb5b2c04. 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/QZNWV2106014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a8d63ebbd6bb5bce4aec00a12248d971bdd7a0c514b6954d923324801cda10. 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/QZNWV2106015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a04ddadbcb6112fca50b14f855a213bdb864726d74b7b0c9683016a1c28c41. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNWV2106016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6444fd5064c5ed04179caa9569ada1b8f03f4e1cc6032acb91a9a079814fb5. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:04:14Z), 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/QZDA82265476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad1517117ce2a630e9c23c24f9aa93c21d2e413c1a499981700d8e989ffbae7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN32249760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16189fd0fbcca2700dc8708f5f2871607970e5f6ae32a49f0aa0d2d531aa1db. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZHNC2270548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3dac690e835f2801a6b71d483dfcc33b47730f21f60fbafc15618e2eb60962. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZNWV2298746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb817fa247a8b6c0cd3860499fbe1b3f48be1f28b6fb88231caa5b6432b8a90. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZPLR2236415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144cab796d3207d093d55f216e459b5a176a604de68242d1240ba12507fe4cf2. 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/QZK6L2122570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ca45d652d2355abb142efbbacce71df2c1aa4b02a70c30d5e3906b9628867e. 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/QZNWX2221495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0744848ac7bff5af7acf60755646b5c722a93b558cb9862deefce837a49f1dca. 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/QZNWV2298748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c293e612809e692842a249ccf715f32b4fd95b7e720f49e3010bc2318ba48bb. 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/QZMEP2156368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af195a864bc7d5dadfaca807d611200370d039b782f6139fa206f5280e02f4d. 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/QZMEP2158253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc528305630ef629ceec8fce52c75dc623098605359e2a144f4f9f30b8f30be17. 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/QZHN92140483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd1c4a2ac8275e8eb2a4cd33f9cd021f9101a1718a93cd940bed6e9a671eaaf. 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/QZHN92139772.