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 0xd6e2a6b30ba148f47fa19a05abdfe504cd0bfade21ca7c477c5e29c893938f40. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcbcba55-9c00-4b4f-b8ba-c8320d503e29.json and https://artists.proofprofile.net/proofs/artist/fcbcba55-9c00-4b4f-b8ba-c8320d503e29.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Celebration of The Music of Gordon Duncan
The Kilworth Hills, Taimse Im' Chodlach, The Atholl Highlanders
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 0xe50fe49e9566554493ee592db105145a56890ff676eca85cb2c9a8e4f9fd77d5. 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/GBBDY0832701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6dc966a22212ffb9227a779197812a2934e965ac8f0bb2548abd7079e2d014. 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/GBBDY0832707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1960c61684f8db817f453b25614b855fedf7cd746d9830baafac194cf5316b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBDY0832710.
Full Moon Down Under, Thunderstruck, Angus Thing
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db0f062d07f8e6f95a27e5f186791f1440e9323aa03968393f3b2d22c85f9d6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBBDY0832712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x300def3f0d07d980fb05779f31efd2eb7ce607c7e24bec3e514488cf7dd20de2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBLDH1200069.
The Mark Radcliffe Folk Sessions: Éamonn Coyne & Kris Drever
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793f8d95e2044a2d77d1c20f21d7219894cd758f3302059e16ce542e99c37e03. 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/UKT4F1900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e02d340ac59533ef2451e3fbd5a612399f9832687b65d5e1de8762e7547bcd2. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/UKT4F1900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dcad4928e00f3614f33d0eca50399f8f98820110d68e1d4ca30852789673b9. 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/UKT4F1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8dbd5548f3d6c918c19935dc0fd3644871987ba8ccd48566de6de0caca58b1. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/UKT4F1900018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6054b112231cef48a56ca2365d68d6ec097069e38d6de5bcb6030b617077587e. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/UKT4F1900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8edcf0f054b78808c0a4ac595d182f014fd2181a7c1126eceef59a5f5717b5f. 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/UKT4F1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa2438bf6fae6ddbae5c5ada356f156d51aea05fac6a93bfa04342716f83a82. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/UKT4F1900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd66102ee050fce56bf134f786558f7a008c7a0f0e8008a3fd258f8f280aa494. 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/UKT4F1900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c0ded878a42698e9c6b0287cc00004779ae0e1f49c9f4df52f5da62771d564. 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/UKT4F1900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f812d7da5499d89d26b6fb7fe376aa2122a0d952cf793007fdac3c42508eca2. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/UKT4F1900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62534e7a1d58b97982cb031eac638acb40a1763b3d45dadcc95db3003988aba1. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/UKT4F1900025.
Paddy from Aghera / Con McGinley's / Loch Isle Castle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb9cc9cf536ee212657de2ad77f01fd6de6fdb329ee1099b743d953bfecad32. 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/UKT4F1900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb3612a1c0479d67ba5be31526199b607fb2dc60f2663927bbd5e55892430bb. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/GBLDH1200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f31610f8b0a50720c7edfc01b9daa6b76256ae9d1de1acd8140f23fed7f0da. 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/GBLDH1100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8b710baccd3f29bbb099e30062ff69adab8bfa63d1884203ba6678d8873b53. 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/GBLDH1400101.