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 0xa5272221d141813c035f938241ed59e1c4f7c9116ad650f961cf701b4fa3e25d. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9036ca7-b24f-403b-b954-ca7e3e651523.json and https://artists.proofprofile.net/proofs/artist/d9036ca7-b24f-403b-b954-ca7e3e651523.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 0x2c52f891ad61272094da8a4b5eec2fc4a936bb840a29baaac1f0c49fab79b2bb. 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/SEWDL0642107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b6dc271581fea011a533cae436839010c889e457f874b66d2e9361a6d6836b. 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/SEWDL0642124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9646e89ad477ab90cd259785bd5183ef0476731be90d5f39c4a9f67965b3c911. 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/SEWDL0642128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bb65926eabf566dd3f9c2bfde00e55502c59deb65390896328d3e5724cda2b. 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/SEWDL0642131.
The Corps of Drums of the Band of H.M. Royal Marines
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1605cfcbac369368d5ef08a180d07be1d78eb512e85f0cc4c5f838fe27d0ef9a. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/SEWDL0647509.
American Celebration -The Most Popular Military Marches
The Band of the Corps of Royal Engineers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd84fca628d4179f30f3a25b6a81d110fd947460db22dc4cb0d9f8fd097515f0. 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/SEWDL0652312.
The Royal Air Forces Association Presidents Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15597278e56e9266568f3423dba0864e1bec0e2fbee6a6a989cb9ba962aed10. 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/GBAJC0200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc93c708d9ee6e79438aaf8ac943f256d542c10290e01f144f973aa27a70be4. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GBAJC0100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cf8006f9e8cd8aed8c077aaae27d89d3ef81f27fe5658db3e9e0385814eb0e. 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/GBAJC0100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee99abdabcfd9e3caa1d03b8096c4d83d2add5c239d761673bfcbb6bf72d0827. 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/GBAJC0500751.
The Longest Day / Ballad of the Green Berets
The Band of The Prince of Wales's Division
1st Battalion The Devonshire and Dorset Regiment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddbae7198d7f5bd456170ba276c027a76ee545ed33c97f02e699ea701a69ca0. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/GBAJC0200123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997cf684d248693a0b0cf4cc455d4fc056fd2d4084f5b419e466f8a721b2ee31. 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/GBAJC0100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c5a56471d5b9a4e26f66c2994dcc8e9acfbd49785fe6db57735defb1e979a5. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBAJC0100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc93c708d9ee6e79438aaf8ac943f256d542c10290e01f144f973aa27a70be4. 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/GBAJC0100091.
Prussia's Glory' - The Great German Marches
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0650e04344cf672e0405ee7833b438ec8dd5e95c46a03c2d2e1a37022c0aa086. 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/GBAJC0100117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332d7ee4f211403064d9e9974d5661f39707ab64d5c45ade30fabcfa0455a33e. 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/GBAJC0100120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97cb307ea0b64b6e48f27f8db5a50eef996cca68d49f3c03ddbb1a89b30fd423. 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/GBAJC0100124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab0f69101d67db1a0770c6de39e7cbe1f6161cd1d7c0b9499d59c3a1c25155f. 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/GBAJC0100125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ed2db0b83114bfa993beeb3cdac493404d403997a02570f7710b433a25c60d. 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/SEWDL0652315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6530f5214646128f7526ac0ba5c008282b12c2d747a9efa2318172888bf46c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/SEWDL0641004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bee1f43a210f529d9a18106dc2488b0754437ce6ba2f54e4ef2877bac2c3f1. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/SEWDL6010498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b38d88386f6fecbbab64d40bb19f1f6b7166e4a2e5736fcbf11721ac9f56ed. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/SEWDL0652335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2facd3953ebf07bfa1146810de205b49fabca8eb4fc8bd3766976d523af3000. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/SEWDL6010497.
Light Cavalry - A Musical Salute To the Horse
The Band Of The Corps Of Royal Electrical & Mechanical Engineers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504d114e00cc1ad1e7a443cfca0c55fd67ee10cb0c80e7926e2807253c0dce10. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/SEWDL0647306.