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 0xc53c067fd86e021a7cd83b07a713ffc88cb1154c4d1dfe39117264a8f6754d7d. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99640650-ef06-4feb-b6d8-ddc99a029156.json and https://artists.proofprofile.net/proofs/artist/99640650-ef06-4feb-b6d8-ddc99a029156.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
New Compositions For Concert Band 74: The Music of Michael Geisler, Vol. 1
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 0x2d051a3a0ae1d5a855d721cbcf752e3d0bfc3d580baff25fd72c82c718cfa4fb. 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/QMFMF2020933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecadcae9f7020895d49679aff74d89619a0e1e08b2d19f42d50ce73a86e4c7c5. 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/QMFMF2020934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956229111715cf221b71a0ec185af814206c9c42b8fbc6f5aca8543a93ad9e29. 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/QMFMF2020935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032ac5b76fcf40084b2e800cd3825dc8ad4edd2d6a9550a043b8989a978e999f. 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/QMFMF2020936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7a7db9b0867de480edd8e8fc25c14797d920867d405b862146c2db01e1de5a. 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/QMFMF2020938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb66679fb8bfe5909fec145bc9573f9a40e0879a4f9cac6752c14fa91b6681d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QMFMF2020939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cde404df0ea3090fd5eafca18e826c09bc319fa2b92508a759e1e3cb0e3134c. 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/QMFMF2020940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d994fc569b15c581461b2bbb3d166dd8086e4b794d10b81360a7a22aa57257. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QMFMF2020941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e6659590042e48d5ebd4610cb4ae906d95dbb72075501d340e8271a9ca56122. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/QMFMF2020942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab79ee7a7d207ad9f56c97482b43d1b0b016bbf0cb5d6caca879582749b9c77. 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/QMFMF2020943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906e0c61111a59f7b1b62d54ec9185427fc674892d0c59a12b1b539ad3aa3743. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/QMFMF2020944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f4d5a1ee3115372740839c574d2fddf554b1e9227bbf5e6b8378cbd4b80983. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/QMFMF2020945.
New Compositions For Concert Band 63: Odin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615e48cd3f5083acf4972f1c96b738ffef329b0803c72762380eb776c8badedf. 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/QMFME2088271.
New Compositions For Concert Band 75: Las Vegas Strip
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc562c1da016c295b7b098e518d94aff19385847f623ea2604d3834086395bf89. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QMFMF2023175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d85fdf603b96ca2dc80f1233895b500fd6f3d4fcb52933e09e4d1045fa9f6a. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/QMFMF2023179.
Banda de Música da Força Aérea Portuguesa
New Compositions For Concert Band 87: Dunkirk
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca666351062ab7281b743baaa287e3bf911793bcc225eb198a511c29f2ffd76. 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/QMBZ92185211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96f344ca6135bc13b39f9cd4616543b6368796fd9fbd449d05fb904febc58d9. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QM7282049218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bd1baf006642e54b1c786cab68f329d0d2769ff72b4fb87c66347845ad5e44. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QM7282049229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ee0b5963923344364255d3a3d3155a69fb0c3a66970ee13389d6b3a2eff3e5. 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/QM7282049237.
Banda Sinfónica da Polícia de Seguranca Pública
New Compositions For Concert Band 76: The Cotton Phoenix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30943c4e9bc54fe29aada0ecf5c0a8c60937b5b21c5541c774f1f4fde33eca39. 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/QMFMF2026351.
New Compositions For Concert Band 62: An Olympic Dream
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf8c961c7ce7dfbc79500c5bce7e523b048eb4ec289b1556f1fb350c40d3ebf. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QMFME2084153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6103766165a13169391185771de7aca851c59e4393989eb0378e999dba3a005f. 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/QMFME2084155.
New Compositions For Concert Band 59: The Rise - 2351
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dfdf9f1da30aa259482c12cb6c576c90026e1ec9254cc212a7615eac4b0f57. 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/QMFME2078478.