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 0x8d553de42dedf4f8e9775e491370a9221ff15671f033a22bb9d1081de178dcc4. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e243c476-976c-496f-957c-51140d8c4ee1.json and https://artists.proofprofile.net/proofs/artist/e243c476-976c-496f-957c-51140d8c4ee1.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 0x5fe08032024f13ab9b5ed18cc73b10b240bf6a7c938466eef783042239bcbabc. 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/CAZT81600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371e8835eef565aba1def1492ebdf21ac47be4062c679e4bd04f41c696401b59. 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/CAZT81600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ba81316457bb8ebd8bcfb9dd955de5cc4a6c67a86ee63e170929444baacd63. 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/CAZT81600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2486960587c006e170df2ca340647c1eea4e6d199d9d7b37bbb245a1b068e9d6. 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/CAZT81600023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ea37417f5ecad5b39b32c8a338feb8c69163affc2d86dc286fd6b340d783a4. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/CAIM51700001.
The Waking Hour (Live) [feat. Aidan Moodie]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81c9cbee941f61063d5d60d8abe01f66cd77cc278ea42d4c8b746c90d7d6a16. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/CAIM51700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ca0ce9cf5036de539a62cb957bce06ccf472cef31db26664f7f0171800b04e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CAIM51700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1171f95af0cd3a3730393cc80e91715cfc72dff6fff9c8b612746185b432f9. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CAIM51700004.
John Wayne Landry’s Farewell (Live) [feat. Michael McGoldrick, John McCusker, John Doyle & Phil Cunningham]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274d0631e25c8f58f574cbdb193aa46823d4d2ace8132490e93a4170e357d99a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CAIM51700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1551b4efb9534832b52640b026292b44203631fb5a1e482fd21db8a0fa5f183f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CAIM51700006.
O Ìosa, Bi ‘n Còmhnaidh Air M’aire Gach Uair (Live) [feat. Mary Elizabeth MacInnis]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee85e6e53ba58f492526d5faf0bae3fa4ad1dd2e028afde3eeb97817ec6d5107. 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/CAIM51700007.
Gaelic Air and Reels (Live) [feat. Brenda Stubbert]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7622ef191f2bf71414c0bb127eae1aeea9fb70e5d7b3cd91f738c4623d36ca09. 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/CAIM51700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402b021758045c6a80fbd2626b1de6512d79c2afc96766a6b6d3fee92efe5689. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/CAIM51700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508b3263d06bd59788d7f5afe99cc200b63ea72bf9483f332baa5cad54fe63b6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CAIM51700010.
A Jerry and Winston Medley (Live) [feat. Hilda Chiasson & Dave MacIsaac]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743e4da89ada831b74a14e01f23a0be577129c2e20a5cb017aa2639e5601289a. 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/CAIM51700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf3c89d68039ffc421748e29d4380e05302cd185d215c1773f9c1e69e442bad. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/CAIM51700012.
Piobaireachd Dhòmhnaill Duibh (Live) [feat. Seudan]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18183bac50cf466fc47920d2199ec9b19b97e73ddd7d906db5dc8eacc35040ae. 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/CAIM51700013.
An Drochaid (The Sky Bridge Rising) [Original Soundtrack]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c580b09ec6578a1c17e4a2927ae5b9b896c4d05f3bf4b6f7e35e8916afabad. 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/GBFHQ0303065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60296d74af47f2180f3f50e4a99cec74ecce1ac8ae49b2a25751f7ea84b08d4f. 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/GBCML1421416.