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 0x97ae9f41722a3b7f22ebd00973047f24515f9b68729c849bfab3dfa483c27919. 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/bb6c6ae4-edeb-4ccb-8dab-20299150ebef.json and https://artists.proofprofile.net/proofs/artist/bb6c6ae4-edeb-4ccb-8dab-20299150ebef.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 0xf63c8d2b267e8bfa2e905fed148b13ba92def65b610e65d220611371ecc5b1d9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZZ7N2421321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69afce17b90e9f237da97a7089bd19fe9d235e8f5370c5cdb6adc910b1fa1c08. 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/QZZ7X2439463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842e02119723dccb6429ec7cf7d415282556b58e9dd3480a7fd643854ff5a7f6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QT3EX2450095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a3b83f234086da072c3aad1e6b311b5c6861e58542b445bff93e726d2c486c. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZFZ72568115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e6b5bf77b433e88b8c79f02eca3faae762fade333f53aab6b4b15b7e45c712. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:01:47Z), 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/QZFZ72568116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f07cf2014d752717a9ad0868754f7e4a89f73a0dc1a248a1fd80dbd02b83db. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZFZ72568117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7b7e612afeff2f54acb73918a7d9bfaf3171235cc8841fcd43e653ef3af6b9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:10:25Z), 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/QZFZ72568118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa191044e996f32ba09a54cab27d8db091e36bf6ccac6de0586ff14c701e9545a. 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/QZFZ72568119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a3d27c22ea02e3abc616f7b5a1c5fa5f4b88ddf57bcf7abeae511d43abfd37. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTBD2429172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f9594b5b31834bc9de4a238e1bc1f2698c7efb49aca488fb335b2041236a44. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZTBD2429174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cf41a83adccd0e7c354a63c331c75c1c16b12499ac856f05f505f6a2bc3714. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTBD2429176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d55f5904522636232f7efaf7fcc498db7f60c2beb1d1954f6428e0aab0b016. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTBD2429182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b903f52f1f11ee431c932578ecbda7387965daac6fdc7ad76c51ac5c1b90926. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:37:32Z), 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/QZK6F2521365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb49a174ef087bcdcbebf79dc2c041b60d86c9d5855cf2209be831cd44c3778d. 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/QZMEN2548741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10f54aecce85c73cce0435678e7f7b378c2c2dc526f74d449b587551d30c59c. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:46:35Z), 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/QZNWV2527608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd224b89eeebc243a4ca9d94097b82b56ee2aedf201e03938461031ceaeb1c6c9. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/QZNWZ2518545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054fd407b39eb56778abd6bd2152acd4b4f0a0ac77a4abd71e79aa1c882db356. 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/QZTB92594663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9071a21cbcca6deabe3367c031a2068be5207e878ecf5649614152b77932009d. 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/QZZ7M2587791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7110137119d995abe5104b47beb4917731c74e84f7970f716152bdca09bfa0. 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/QZZ7R2515072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb49054cb2cef74ceb21e7cb1c62d38e32afc6c0282dc85c7792cbbec1b801a2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QT3F62513928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80db3ad99a00b287ae2dc30e9a3520ec30582b9eb2f447712491e7e4ad26dc91. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT6E52564839.