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 0x825ec2d72b373f164a8cea90a73b8578210b40a9375ef0b1f479b025bc069c8b. 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/8c5070ab-998f-40a8-806e-695ab188e1c8.json and https://artists.proofprofile.net/proofs/artist/8c5070ab-998f-40a8-806e-695ab188e1c8.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 0x67137bc0e90cd9d55f17fc10099d453aa26da80f851bbe393363f1190f070b0c. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QMEU31506903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da8f7620dd0ba418d57fff5e19dd01de6f8f8f3b89a2f24e3d4ae7c55e7e609. 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/QMEU31506906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98798e85a932a73e292950a3d6335e6513d19e0d162ef0ef052ca58b49aef52d. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QMEU31506908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8902e6817295bc53e2946612269f9e8b559cec88ebbb4dbf28856f0ff7fdab35. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QMEU31506909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f69ef57d1bf8ab44f95c43f623fb6d416466290a3625477a0e2acf9f8d670c. 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/QMEU31506910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc490b918d74946d0d4025a9cd273e94f1dc1db38f46673260c89ecc42fef3ff9. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QMEU31506911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60169233e3fdd2fd1a4d74eab7f21ef5c723c203a90041bde1dbff9a9a3aebd1. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QMEU31506904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967bbf4de38d3a12bf2e815e2e6d9e96726b67aae2d948a7828f65a01dfb5734. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QMEU31506912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c66ff570c749eba680724baeff2e20b36da2bd94ff45115d6381bf19b79e8a0. 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/PEBQ91609480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb701a067881da7aa6d1e88dca97adcb0fa4f8e8ff6f74113f90adba2bc9cdd14. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/MX3741801055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ebf7b87407e588b420e10037189d92333eb0bea36d53f70505441ef5216642. 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/QM6MZ2002840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86700a2b9e45ab6f90633ee859315f24d11294a361e968004334bc20a0ab68b8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMFME2036548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ebf7b87407e588b420e10037189d92333eb0bea36d53f70505441ef5216642. 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/QM6MZ2002840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc672d17c64f6892e3720528f6149095a8d6dd032176cde2524358f4c35b8a7f2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QMBZ92012465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890e71c13df6c84c3a8fe1583b230543b93ccd4c3a663a5e8fd8f138f2f127a8. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:05:39Z), 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/QMFME2099874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3055240ac956af5ed74f4500b7f87de473106901deb4631048da1bf59065303a. 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/QM4TW2181783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139067bc0c74a3e068a8d1d9ba6e2ea7fca8e9120370e00fc79926275a4d3e75. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMBZ92298824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3790f8f8cc8d535deb63976554891a7837a84eef110d731e097cb2b9b0365c. 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/QMBZ92321351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cf5b085b4a23cf703aed4329638c011ed48960f85a0edc4a69b2f9749511b3. 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/QMDA62371130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f6ff31c2f7b8a3776955ba75af38daa16f3f5076cc3b7000c267214fdea259. 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/QM4TW2459555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cf5b085b4a23cf703aed4329638c011ed48960f85a0edc4a69b2f9749511b3. 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/QMDA62371130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5139472965ad4d45baeb6413926a7bfcb2974404fd013e1c9ef5fad41b065215. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/US66W2301231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3790f8f8cc8d535deb63976554891a7837a84eef110d731e097cb2b9b0365c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMBZ92321351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d33ebf8b4415438c8a1a032def8dcc61d834cf12bcafe639a2a1a9394ea6c15. 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/QM6MZ2408245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c339e3157b00cb6626c867f13b62c3532bbc68a88e35ceb2624ae578b089a8. 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/QM6N22431532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d9aa31dcf2f652a5787a0cda82c502d2915fe5785865231251bd20e4bfe816. 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/USX9P2075963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8e0dfedbda3e7d82ff8ba197b2b846132fba1581e18fd704f08be1b912233a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USUM71804842.