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 0x75f3912498a55f8140f3e5e13126537ce36b67a1b8bf4dfaf44ec1b202d25d8b. 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/b8be4d7a-0d45-40b5-ba00-a070bdadea2e.json and https://artists.proofprofile.net/proofs/artist/b8be4d7a-0d45-40b5-ba00-a070bdadea2e.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 0xce6f68d6440bad678df1b539f4342a9f278e4e8f9a77f9cd13e5d7be0dd61642. 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/USLZJ1409362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9a9a68fc62ba1ed18699187ba5ae0296ad2d1830bf0553f23e2b2a2c6ccf9f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USLZJ1409365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179fda2c0309964088ddc4321acea6c3fd833ea01586552e529b788c27d64596. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USLZJ1409366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d8bb7af39ec0f095b36f5698ca785332d8eb161936265468c317649c018855. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USLZJ1409370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52175eeef250611a6ce3e669722ce87be9acec87cda3429add8cb262b19e61e6. 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/USLZJ1409367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2647ba0c5fbc9a31971f3d64efbb9abf7a9affe7dc036e2a747c4fd5daba196. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBWUL1956510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d312c5c2e7ebf82b2facb4b98571aa2a5503a5c18b0b732e22d0e2a39de7334. 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/GBWUL1956517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68769c233feb87cbd8207070554d37a67e4dec857f804519802a88fbcfa440cc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBWUL1956525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03410a7e4e51c0d13b16982df9a6a90964c91bccf743cc0ea2c0d511f5547e96. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/GBRKQ2383883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b112b593b51490db9f29220b1406a86c2acd6ffc06cdfe53d1839b46784118. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZZEB2372291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583f6a0145cc89d7ed6fb6235659e32b777869ca6cb66e40b106e1d047a8ac86. 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/QZZEB2372293.
Jaunt (feat. Tristan Boyle) - Original Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66b4ab5f9734941ecf01b3472f69889818d7906cf09cc8a3290c8684fbeee3a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USLZJ1502820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5da8851499a92e126bd88874a31678ed35a7890a77436a7861512bf6b3f395. 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/USLZJ1637230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07ed726f1bc317716c71b9b94e0b472e3cec1ea2dace18397c7bd0eca82c787. 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/NLHR21400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabedce624637e03adc58e8de6095ce689a01fb4706df632d3194437839f113cc. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USA2P1518857.