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 0xf74fa00f7a40cb27c1dd8c052f6293c65cf24cef78c29fa665e8946ea53ddfcb. 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/0212a0b2-6ca0-4d73-b215-8d966060e4fb.json and https://artists.proofprofile.net/proofs/artist/0212a0b2-6ca0-4d73-b215-8d966060e4fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Light Calvary Overture and Other Warhorses
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 0xd1e7bf2f9f25e2fb1d6158acfa7726cb5c9e1007b342a04baa9cfa5d099a1f95. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USA5R0601101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b48646a8e4c4fa66d645ad4b23a07096013d6cf4eb2db85e3157caefc0e5e9. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USA5R0602011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227072cfc44b8bffcdae5cdc3f3856d1b50470c29eb60c90658dfb5bba12fed9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USA5R0607505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff28e1c6f0f79e9ba2ec20f3bd9ead61c22310cdb9fa07c89923caba9db646a. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:32:02Z), 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/USA5R0607510.
Four Ruffles and Flourishes and Hail to the Chief
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8f9bb17acd593843d3745df5407d1b0911aa395e0c3ac275214f237f8082851. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/USA5R0607536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc641c436cd3aa010ab162db8c89e0661ef8c9493a48e0341ce93248ae85afe49. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USA5R0607576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c20f00ee7bb1087a4c1ad8a9d57f6a649b51059aa034b512943f04a49264f4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USA5R0607577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e626f00ac0e4d727c80e3b36ef45773401803ffc919f96450274239ecb7879. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:23:04Z), 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/USA5R0711108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a39d9182cbbb9599bb6a2d3213e8160f84c1a8e87c45e2263a73c8e3e81f41. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USA5R0711110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5224367a49f644becf61b04139fc9966657b5a2feae929ae7678f6b88f8f4225. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USA5R0711112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37a2e08efd508e81ce3f74bdd00cfa1aeedcf1abfa93d8458781bdca0bdeb0e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USA5R0711113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55327409bbdf88091b4fb8f9fb97994522a62487292dfda8b12ae82d6feda828. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USA5R0513516.
100 National Anthems Around, Of, and From The World - Also Great for Ringtones
Heritage of the March, Volume 11 the Music of Duble and Friedemann
Heritage of the March, Volume 10 the Music of Heed and Bidgood
Heritage of the March, Volume 14 the Music of H. Alford & K. Alford
Heritage of the March, Volume 13 the Music of Crosby & Marquina-Narro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e99de7bb7510e706e1e977db4cf5876a7485b875c6be996a99573ba1b3b70b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USA5R1033711.
Heritage of the March, Volume 12 the Music of Reeves & Fucik
Heritage of the March, Volume 15 the Music of the US Navy Band Leaders & Rydberg
Heritage of the March, Vol. 66 - The Music of Siede and Weldon
Heritage of the March, Vol. 67 - The Music of Manente and Skaggs
Miscellaneous Marches by Various Composers, Volume 2
Compliments of the United States Navy Band
Heritage of the March, Vol. 7 - The Music of Alexander and Pares
Heritage of the March, Vol. 4 - The Music of Chambers and Hughes
Heritage of the March, Vol. 8 - The Music of Olivadoti and Lehar
Heritage of the March, Vol. 9 - The Music of English and Von Blon
Heritage of the March, Vol. 5 - The Music of Losey and Mantagazzi
Heritage of the March, Vol. 3 - The Music of Jewell and Blankenburg
Heritage of the March, Vol. 6 - The Music of Barnhouse and Widqvist
Heritage of the March, Vol. 2 - The Music of Klohr and Lithgow
Heritage of the March, Vol. 1 - The Music of Hall and Teike
USA National Anthem - "The Star-Spangled Banner"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0f896cf4e84c344608dbfa494c3e04c62016efb55d5f56f38dc571417183e2. 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/USA5R0822313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a25b573a487ff95b1552a2793b26ba95b9278ff622d0d1da25950b2dc5bdb8. 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/USA5R0822315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330ed4e5b338b080ea51bc80dffe790bf4dc41417d2162f41150b9d6a13ba56a. 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/USA5R0822318.