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 0x7b30af85722c705ad7725d3c4dff822b480035b844921d6f9c41d507edaf31c7. 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/2f71e0b5-ff4e-43ec-ad7f-8d6ad89a9036.json and https://artists.proofprofile.net/proofs/artist/2f71e0b5-ff4e-43ec-ad7f-8d6ad89a9036.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Concierto de Aranjuez: II. Adagio (Arr. for Flugelhorn and Wind Band by Kevin Bolton)
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 0xd48ced72ffd7fcb3e2f8dc69963a1f191d240b69fa94270bd130331ba62c7e1b. 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/GBLWD9610002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38f801533c4779fc9353571d50c61d5da2761ddefbf0813cad1eca037a28b80. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBLWD9610003.
From the Shores of the Mighty Pacific (Arr. for Cornet and Wind Band by Roy Newsome)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e20c224bd48a5b342fb2a39b444235d629d7133c8c6b6bd5913f5d88acb775. 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/GBLWD9610004.
Barnum and Bailey's Favourite March (Arr. for Wind Band by Peter Roberts)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf233dfbe3cbe63490f5c7b71025dcf5577c41591f61f4922c1cc14cd0f845b5. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/GBLWD9610011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63f34135028d8479ebcd27d242af3465776f47e1cfb86533c75358eef58cb1c. 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/GBLWD9610012.
Abu Hassan, J. 106: Overture (Arr. for Wind Band by Gordon Langford)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bb67561d6a7a5fe1bb9947b96622b927fcdef55871577ea7f9454e9f697cd1. 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/GBLWD9610005.
The Lark in the Clear Air (Arr. for Tenor Horn and Wind Band by Gordon Langford)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b49c062afb2fd5a3a5252c585edb09dafc51f87f2c5329f5204c681ba6356e. 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/GBLWD9610006.
It's Alright With Me (Arr. for Wind Band by Tom Brevik)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b656f190a31643b53597283864b3b387f2100a06eb8b5225a8097b48e7613cb. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/GBLWD9610010.
Zigeunermelodien, Op. 55, B. 104: No. 4. Als die alte Mutter (Songs my Mother Taught Me) (arr. G. Langford): Songs My Mother Taught Me (arr. for cornet and brass band)
Black Dyke Mills Band: World's Most Beautiful Melodies - Music for Cornet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5547a4350b9619d568b3b53def6c4c9b66308afb1330d9cf988fa071f82287c1. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/GBLWD9109601.
Ave Maria (arr. for cornet and brass band)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e2245f063f8011bd9fc49282ddb7e983125660e5ec650c5bc40639ce75a8e0. 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/GBLWD9109602.
Passing by (arr. for cornet and brass band)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac2010cbf8697f26b345d74b9bd76a9399b1771734352d8bcfedf4f7ccfb82c. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBLWD9109604.
Rusalka, Op. 114, Act I: Lieblicher Mond (Song to the Moon) (arr. for cornet and brass band)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb97defd0b230335ec3dfcd22dcefc3f1fd57109aded2fed60806924d665b6d3. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GBLWD9109607.
Les filles de Cadix (The Maids of Cadiz) (arr. for cornet and brass band)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2502be157a3c19d9b69e4913d5e39e8897dfffef5fe494453727abe8b72d6c7. 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/GBLWD9109609.
My Love Is Like a Red, Red Rose (arr. for cornet and brass band)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094aeb94f2d0cfb4abbc65f5e3b29935a97c5164bf4f0689ca007cbe03a0c819. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBLWD9109610.