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 0x0163e5bd4232efdab26124a497911e81d6c415cda194565e5966c01a1d5cc43f. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cecd6a23-3ce5-4e4c-acb0-ccfc3c9e7033.json and https://artists.proofprofile.net/proofs/artist/cecd6a23-3ce5-4e4c-acb0-ccfc3c9e7033.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 0x8f055007faf83854d423e1afec143274a6667af64b3300c188efd27cf58b55ae. 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/GBQLU1600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cccc2c5ab53cbb7d21da24dd221614bf75be0488f696c534d1c96bc349142b. 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/GBQLU1600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949d615b30626157f12f63e134af9ba2af7181c35fac7d4aa62b53864b5e5323. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T04:53:49Z), 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/GBQLU1900022.
Surf Wars Vol 1: The Day The Surf Stood Still
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27b44563b8176a26d19f03643c2a2932de031ef48c4bb1539a8a5e4e64c0a52. 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/QZTAY2383398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d424456b5ee332af310a34392aaf1dc12aef65da4cc0a80b40da7b64914cf23. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6L2599033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597eb4406270ed299f26673195993a635d0016acdb47935db094a42f59388187. 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/QZK6L2599034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2a8d5550f36c927a202b91a6e2b3f17e95c336101ed395e94bfd306acd00a8. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZK6L2599035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eab7f438300096a1b542b7006ccdb824dcd2b31b74b150a81a078359860375a. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZK6H2538794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x301b3c9a90a0ffad4305e3b223cb1c15ab79a35b9fb20c2ee38a8f6d658e4e2c. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZK6L2599036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6c09da74a27ce1701e94ce6ced83e98290fabf2167c90c7e8390e63d5ec3e0. 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/QZK6L2599037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f08d777151a79251d7585fe0aedb303e4c5a1b0a0e62af56efbae806cd6e357. 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/QZK6L2599038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60528cd5f3b9134d13b62b908b85d7f483d5803e26b1ca185b81d259e93e5baa. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZK6L2599039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aae94cd9092654d38c24b176e6513381f608ff76f46ce694fbeb9937f9da900. 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/QZK6L2599040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2c8dca9785da41a7f07543f97544b8b250a6f841fec090601df24582ddacea. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:51:48Z), 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/QZK6H2538795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ad51fc68f6bedde2567ed3b90877dd4c7512e077a2f2ce0f349407d77bd07d. 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/QZK6L2599041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78de8e2153d28b933982572e580563a3758b5a56ab9de66856a3961220ce354f. 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/QZK6L2599042.