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 0x697df7bab6af820f14c070a5865f7785dd8418243f01fbe8a6bdd4073a8a48f7. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e062f67a-4036-4646-bf78-123f9038ee14.json and https://artists.proofprofile.net/proofs/artist/e062f67a-4036-4646-bf78-123f9038ee14.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 0x54d9945e052c91008b43744758304b6134e8ff02a00895ed0ced9c38f1556bfa. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/SEWDL6141999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e659cdcba9f8ed92ce06da69eaa64d3661b06ef3290523925bf11a2b291b7f. 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/GBCRS0715905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fc7bc46b501d02e3d5251d5e794969677eb3ee38a6c2dbd4e8a1a680b9e40d. 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/GBCRS0715909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9194821e7a75e36e6284b73bd5aba987b8084c022e7cfcaa06dc4d509ed6f391. 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/GBCRS0715915.
Those Magnificent Men - a Tribute To Ron Goodwin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d82adcc1a994de0ee4ee203649cd0dbc60d3bfc241e329da22575944c30431c. 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/SEWDL0645501.
The Band Of The Royal Air Force Regiment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5754bccfbe7a062e8da0529fedc3769b01c9144cff6a4249b714138948db1e42. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEWDL0645502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7659d51bd13a326c4de7a8fa9ced3a3edd41dd677281884ac8e25c37242ff33. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/SEWDL0645504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc278e75dfcb52e41e4e5f071adb5a2df1a289c16f4ee4a7f922c5610698ae66b. 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/SEWDL0645505.
The Massed Bands Of The Parachute Regiment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86abf1652ac00d458e67ce69f3bf0cb9daef230980dbcfc4fa66316d38392b39. 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/SEWDL0645506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2ea91e8f3b78be5ee89690d0afbf1d120d76850dc5fed92d02e5774948f219. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/SEWDL0645509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0f22983ec9898a4215c0e1699e97d977ea80203d0c1740bb43bc6c2f9183e5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/SEWDL0645510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146815f22f45ca60b56753c6b00aedf0bdf5c9623586265ca9324782f7a720ee. 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/SEWDL0645511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3603e1116dc69edcccd9ac1aa67bfbf18439bb22173a3bcc3ab99786ac0c86. 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/SEWDL0645512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63a24adbe09b4c584c9b2dda39e221b1ae51fd6d5da0589398c8e219117a690. 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/SEWDL0645514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a41800c866cea1964f9995e50669753e195a34e1f30bac849c2a5c24c81304b. 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/SEWDL0645515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90837f4bd2ae4e46ed515d1ddce9394937a21fd849150c0295898f4d4c59656. 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/GBLGL0008166.
D-Day 50 Years On - Music From Great British Military Bands
The Central Band of The Royal British Legion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a7ee7c860870fd70bde9c84e10ecc0ebbaca0d17eb2b554c2d5806146a3b30. 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/GBCQU0602675.
Military Band Favorites - Great War Themes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b17866750a4905576a786df6f6e813d111264d91c58fc56fc143337e273e82. 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/GBCQU0600768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f0ca3f9546f493cfd31fe593453c7f2a3b464404a956c648ee688b0eeab70a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBCQU0600775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4c114ab49f524a2a4e7b4ae179923d6ef5fe1612e4ba975164f29b87941996. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBCQU0600779.
Spitfire Prelude From 'Battle Of Britain'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8d82652c76e22c8b9f4e13471601452bbd74b479e0643a13f23fad8a36afc3. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/GBCQU0600781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb1b8ce92c95c91f87335d9c0adf7e0ca5a436bcdad5477535a67566ca322a7. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GB8XC1418579.
Military Bands - Music on the March, Vol. 2