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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f960a74dd2108d2060a4079f6274c063765cd49cf27af8bc2d2db21c46e3113. 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/cd14c050-f48f-42e4-acd8-ab01a1abdaed.json and https://artists.proofprofile.net/proofs/artist/cd14c050-f48f-42e4-acd8-ab01a1abdaed.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb531346bd6c9155e6c4b117d35767729fd3b5889ffe41f13383d53002ae71b20. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZPJ32346148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6444fd1bddae19ec6292e1deaf3dd94d30bf363c405c58e142c3b12a2dc79e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZPJ32214113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe373ca81d84f1fc101ef8fe575d2aa8142db427e0c91e97d7cd1f22d79a38b0b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZPJ32189952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8c05eae2609f24a38e543c3075e646a16266140da0457cf1bf62ad20c16e95. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QZPJ32162977.
Huggy Wuggy Happy Meal Song (Instrumental)
Huggy Wuggy Happy Meal Song - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d729dab379fb706386c6d7560b72f5ccd81d1bacd2519d35641cfd224f5a4a3. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZPJ32143093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85feb7e910e62bf7d9a00027145d34e347dce7e9d7aeb01de325314b22f7ed57. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/QZPJ32132488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165a596aa731bf126223b932f10896a55707b2d1739ae25a0bbc302aca52ca88. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZPJ32113163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69fe429a6d5909b7d42faa7b00645927668172c026890720e87018fa939000b. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/QZPJ32115396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2913bac3d32024146e2241a4a0f229ad01f45a08c2d406a32915b288034898f7. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZPJ32117266.
Pennywise French Fries Song (Official Instrumental)
Pennywise French Fries Song - Official Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3073530e6ad6b2026855e4a995c7d4b3b6454b4ca0da2997215cc391b518d76. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZPJ32101702.
Talking Angela Song (Official Instrumental)
Talking Angela Song - Official Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84831dfbc4097404301632a732e6f7e668b77b0d6ccddcacc2a92ceeacac9814. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZGWX2220023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328d77507855d95d913068f1c0e888b3e5c62825d5078d1bc01877e1d32803f9. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/US83Z2499605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9deb282b6dc804774912ea2f877e3e5885423f9d6353d53173c55c5600728b17. 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/BEIR42400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb812c2147311e853cad3c431de2c405707964d59ef9430e34dad9a919c3629a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BEIR42400029.