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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cdf46b56c6df08e7d5dcff8f39ba723a5b2f2f2b3e411d84704808f73629d9. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a7c50349-ba37-4554-83ba-1bd1f7d44d21.json and https://artists.proofprofile.net/proofs/artist/a7c50349-ba37-4554-83ba-1bd1f7d44d21.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc45def6186af23f208dd243905ca0d0b76416b8bbd470ba9023192b6307e21. 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/US5UL1426664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd39375b0a6c75db6c613601962a67646decc16ad7d757b2d2fe7726fdb86d70e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US5UL1435131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d1c5ded4c9dec5e692f504f84c012a9dc9131c8f7faa5c4d3d1ec1d4d880eb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US5UL1058172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51080debb33bc92b82d61db1a4b39434db07128723ff310507d291c37fe24792. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US5UL1346125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0445980803371a1b008da39c43ca3487ba3e8d3d2dde71eac10863d77a86a8c. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/US5UL1421728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7561c94f191b326f5243dcf093614c3fb663b6a7bc6834cd2445f6579440d783. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US5UL1248594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0b44fb45dcd148021fbbfb9d4a1d15aaf97d25520a04406f7c45761891c930. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:28:20Z), 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/US5UL1103841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc212fdd53fcb7eaed440db463ca76f1020e3073aaffd3a4e622ce0cca0e536f8. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/US5UL1421711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8509deada378f36c3954fcf46cd2851e71ea587cfa1118985193dad813b71c5. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:19:50Z), 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/US5UL1403828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcefc0e3b7974949477a0f2cefc6d618716f04fcb60d4b4fee94312bacb6720f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US5UL1213196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccabcc684ad94afabb1dd5be33f09d84495190a37141ae53d672605a5e7860c3. 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/US5UL1435129.
The Celtic Tenors/Irish Film Orchestra/Frank Gallagher
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d361f4c6483abdd1455c2620c87dd0fdeb0820391310e490d67c072b1f07f1. 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/GBAYD0000115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a3dc678b17da163cc84193ad6dee094cf761964ef91e8e9a67dbc0e2a44dc6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYD0000116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e7ae1c5457a7137c46482e46e19c853a100298e99de64ece774958b9535783. 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/USA5W0404665.
Julian Lloyd Webber/Pam Chowhan/Catrin Finch/Steafan Hannigan/Peter Lockett
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0b8b640b6c738800874d6bbaf8a32806874734ea72987d19200a58bbcb0fba. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/GBAYC0502340.
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
Niall Morris/Irish Film Orchestra/Frank Gallagher
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5b26fd045ba4fe1b26d2288dc3f6760ce9472182ba72e53814face6b53b918. 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/GBAYD0000123.
I Heard The Voice Of Jesus Say (Kingsfold) - Arr. Catherine Strutt
No Wind at the Window: Celtic and Gaelic Sacred Melodies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8549d54e26b88237bfc15064e447fecae025a63ad2eab81f9d680a85061e254f. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/AUAB01850534.
No Wind At The Window (Columcille) - Arr. Catherine Strutt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e53a8c55a73110d4bd99f5158e8885283b0178106d751114c9aea626324b85. 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/AUAB01850536.
Part 2 - Love & Death: II. Lark in the Morning Medley
Come to the River - An Early American Gathering
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a2dfd3d9e35391150f2441c515e27c7e996d7894b63e1971763de1dccb9826. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/GBELX1103882.