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 0xc6bfe8ccb6b6604631ec6bd6d3796a941bd8f646cd8d6079b09882ef89489dae. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f368d454-9689-419e-90c0-2503159c6634.json and https://artists.proofprofile.net/proofs/artist/f368d454-9689-419e-90c0-2503159c6634.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 0xf3f6f9059698c38e5a7fc9e316a9a0519b8c339924bcf0ab1ef496dfcb43b7e9. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/TCACI1573437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd342e2cdd5989f6050a416d6f52d6ed9c35a2a596157538b308c36e77f165ee7. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/TCACI1573440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2766da25614565c759dbebf8ebb4c6e876303ba97f6ec32cbe7a2261ab5c7c. 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/TCAGS2361626.
Forward as One, Parkgrove, Arrival, Dawning of the Day, Heyken's Serenade, Banks of the Isla, Lotti's Jig, the Glass Chanter, Hot Punch, We're No Awa Tae Bide Awa (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5cbd1d05ae2480fd0cc6691835d1c25e79b811256b1758ed4d5722d81560c4. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/TCAGS2361746.
Going Home, Land of Light, Wild Mountain Thyme (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801059edc81c79be02a27901c40de61d49f6f41050b4af1d57a5816246cd6875. 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/TCAGS2361811.
Schwingerlüüt Im Schwizerland, Müeti, Liebs Müeti, Schweizer Psalm (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36a52d03e1dc99183ecb527e44b0587fe7501c1d4d5672fe995126dcca416af. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/TCAGS2361870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a6c689c20dbb373ec8fc4088d046be33decb68472cebed5fddaacc12aa46c0. 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/TCAGS2361873.
Scotland the Brave, the Basel Tattoo Helfer's March (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b5f0dc03d9f0899d7b014a60e97e6962f443f1e5557fa3cab6e549919600af. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/TCAGS2361896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d6c40c9f326807d5477d9eb505dccd9e9efddcf90e2785fdcf4f855e141ba6. 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/TCAAZ1150298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbe9f6863367b6af0660aa2a82a354fc1d4d805d3fd4538e7fccf7abdd475c0. 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/TCAAZ1150299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845f689783c6cec6396fef94a62bcf488d0af3dc59f7b9418ddc4df289d11e2b. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/TCAAZ1150300.
The Old Rustic Bridge, the Pikeman's March, Paddy's Green Shamrock Shores, Killiecrankie, the Old Rustic Bridge, the Pikeman's March, Paddy's Green Shamrock Shores, Killiecrankie, Wi' a Hundr
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d49dd26947a61ecbf30ffad7d2fef26bbe6912703211733c9d8f67a060c5689. 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/TCAHH2362594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bcfa1e34607a9f25c2cbfd1beb8162076223a0c7b5ef27000657551348b622. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/TCAHH2362691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb382ef8775eb91a0642acf16281835eed1f11325245a3ed57f8af4002a7308f2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCAHH2362696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0194151941920c19faf08801ce8535917b10b2132af80e5b59ec93e71cc3a2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/TCAHH2362704.
Edinburgh Military Tattoo / Hot Punch / Bugle Horn / Bonnie Dundee / Longueval / Itchy Fingers / Rhu Vaternish / O'er the Bows to Ballindalloch / De'il Amang the Tailors / Minnie Hynd / Mucki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e218f16176c47cee0c409a26cec08b971d99af48d42ce13af631c21e8bf8e5. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QMHCW9811502.