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 0x552c78cfbb6cd59b3721b7194dcf6369b95e8e4f7135dc11cef8888b16a5f7b2. 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/cfee857e-1519-44bf-ad0a-43a7d2bfd0f9.json and https://artists.proofprofile.net/proofs/artist/cfee857e-1519-44bf-ad0a-43a7d2bfd0f9.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 0xec1fc1e5fe856557739288c4e8edd4860989cdd28b5089880face426b8d3e4aa. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:08:25Z), 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/GBKQU2343614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b41686394805410862540bd76cca5239c6fb36ab99ba2773a42e7d3d3eddb7. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:56:26Z), 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/GBKQU2458292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ade10990aa3ec76253a1cc42431bce383411bac62230ad28b1f5cfd8feb414c. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBKQU2504102.
Another Way Out (TranceLine 211) - AR7ANIS Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4659b53c2819998ed341139074e29edcee740c1bc4606ce35ff36dbb89bcc446. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBKQU2516868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184a8e84213f00d7c437ac62dc040e51a04ccf5c16c8d419666568d632163c98. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2516872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38df5d701d9c2d8a424f64ca8be1e1537b328eecaf10405d9d08ac864fdbf33. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2516875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036c6f5f7f6e7126703e036a704563fba2c9d40be355d13c7a81c1054643dc59. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/GBKQU2524607.
Fallin' Deeper (TranceLine 214) - Dmitry Chelnokov Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df199684deb8a2db6d837d4016de875121d8e62581b4439e1956720ab7686d2. 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/GBKQU2527315.
Lose Control (TranceLine 215) - Van Snyder Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dc9c18bf998839497e3f89b8924880805a2d24a1686d9463db6b13146468d8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GBKQU2529768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a0874e5b26f9ccdd210417f8ce820e61ca6ac5c6f0c5bac6f2f75a843ebf0b. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:21:23Z), 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/GBKQU2531485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ec680094dd2346bd0441049ce0fd351d567ae4bc8807acb0cb3a2622368682. 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/QMFFM2500691.
You (TranceLine 222) - Mariano Ballejos Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df500bd29aff655a8d1bc2069a6403af289c8945394c1fb343bd8c9c24bfe00. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:24:11Z), 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/GBKQU2545418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efd621056fb88e71f824dda98ae1376390d8fe02e18c2841c1b2454817b54c5. 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/GBKQU2548753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343976390fd7b0026bc722719582c1a8f64f221fbdb5e1dc3267ba3d0f12afdb. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBKQU2578572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682e3b7f5940d0c1621a18d8588ceef40d84f0b8acf6b75b02708e94bb70b22b. 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/GBKQU2596583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb6e2a395b3e44abfd99140a6cd77d433c7cf5a1fa68aa70d23631547561795. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBLV62507156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc8183059bdade4abbbd546651af1a9f8716b4ba296ef9f40606ebb03e08cf8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLV62137722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4ab25055e8e841d248fbb56e418b6dc671994891e0de1202e2996606aa4440. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLF712105163.
FYH426 - Find Your Harmony Radio Episode #426
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f47566a94acdd39af26a1b2d0113b1804295ecec5f222ab71d2789aacbe21e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBLV62409729.
FYH411 - Find Your Harmony Radio Episode #411
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b66e93a28ce4bf11344143c6574e6a970bf0a8e1346c4be98537e20fb0b9b44. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBKQU2474491.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch