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 0xe763ce7e7a5a655ab224d8ea41b83e0273d304391107ae76179bcaeb006a9fdf. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f192435-3166-48bd-9024-ff73ddc62a0c.json and https://artists.proofprofile.net/proofs/artist/3f192435-3166-48bd-9024-ff73ddc62a0c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Golden Age of Light Music: Non-Stop to Nowhere
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 0x6dfd4263f136d72ffbcbccdb7be38e0e2c0c7427d875230315f67921c97c7579. 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/CH6631350605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a03483a89b420ae0d47ae063622c7df6d4e4ebefc766fe0298d8472d700fa7. 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/CH6631350609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5ad4c9b294d4fd8bda486363a0e82994d4955ffba4c65f6a997bb51b03ae41. 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/CH6631350621.
The Golden Age of Light Music: Highly Strung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56013d4104925b29aea6cd77828d1cc1d524c26b3f8a8b2f5bd32ddba073eda5. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/CH6631056608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc858d03ceb2606ce92f44914fd2ea51dcb003d1fa9f963de6e63148fcb62eef. 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/CH6631056610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d409790530757be96b19fd16fe266d555fe3ccf2dcd7b00b5f3575c211851d8. 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/CH6631056611.
The Telecast Orchestra Conducted By Robert Farnon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774cbfeea845ccac2ac74a01cacda7d07dfa34c28f577cc77b815fe0d06ea5be. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CH6631056612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e98833479dbdf596570ab3ddc969e2cd4fc861e9fd9badca372eb270215431. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CH6631056615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951ac040fa44b0f076afd29b141d411f3d3b8fe804a97bf4258fde088a0e4adf. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/CH6631056616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432eba21d5b8332ded66f0c4839d4e95603cbc9cb2c539b8cecdd76ce8b70b6d. 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/CH6631056617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d2bca1a6047a6f701073f3ef6903fe58d189d4120129373fadc4a5d75446f7. 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/CH6631056622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53748e44bdd9569845c61a6a1dccdcc0a3ed1bc33aa2bb99389a823480661a5. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/CH6631056626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e53b97ab31c859c062a56eb1802400d5e146ed99c4a6f8b145737359c44ffa5. 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/CH6631056628.
Park Avenue Fantasy (underscore from film soundtrack “Some Like It Hot”)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f39dd19e2bcba4ae0e6403a77ea072a8de420620f777bec96ad0bbd8b278f9. 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/CH6631056629.
The Golden Age of Light Music: Picking Strings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebaea902a270d275755eff964d65415c99b01fb0eba441cbf603a86327ede61. 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/CH6630955601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ca9c7ac1efeb830038b6eb0ba748ddc779a3c26d28412df87f53eda46c0d3e. 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/CH6630955603.
The Symphonia Orchestra Conducted By Curt Andersen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e8606ac94a20aadd04d89bbbd56794ede0fb913cd4e9b405ef0d3c78ffccf0. 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/CH6630955610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23862e606e9ac8a883713431c31fd6bb337ad612db25a2a0d1254d235ea4916f. 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/CH6630955627.
Roger Roger And His Champs Elysees Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b21f9a902fbb775f426c3bd8e80ab8bfa00008ad7337e58b79dbb439f55eddf. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CH6630955629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd749c53272e382aece6ddc29b8f1d1b86ba88d210613bc18ede495d28b3c87. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/IEAAG5800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe39959c2100ece95a4302d79533b15c0053dac509e108e3e369b65351d161f. 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/IEAAG5800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe305a01470572ab3d81de0e42642665a9fd4c2e5fae3385fbdaff7c581dbb299. 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/IEAAG5800001.
Romance De Nadir - 2010 Digital Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89df470fdc836fa1f38ffa04f5cdf1ed843bfec01364b112e3685acde32c1d4. 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/IEAAG1000019.
The Golden Age of Light Music: A Box of Light Musical Allsorts
Queen’s Hall Light Orchestra Conducted By Robert Farnon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777059fa8a548f2b1e082f66e5e989a098ec137829d443242b68f2f74d0944de. 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/CH6630955706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1f79a7b5a8a8abbbfd9d54e550251f27f2bd8d650cbf904f61c951da51cc67. 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/CH6630955708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf06e93ff7972861e98ca56aa303bb1dc59ae99ac6decc411d8ef920813103e. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/CH6630955720.
The Golden Age of Light Music: Fiddles and Bows
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dea81646cffd02a2e116976edb2b31ecf5ba704519a46e20b7806c46b76c339. 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/CH6631350104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8727e46e2315957044c670df1eb847b05568b58771392d703f59215929aebf. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CH6631350109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288a79340470503fc323d02b0a5f95d5001ab5ee8cfef7a5c68d615bb5811540. 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/CH6631350113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6f89cefdb1a771f4401d7ef4fb669e322f87456a2dbc8d6d054e2711caeb77. 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/CH6631350123.
The Golden Age of Light Music, Four Decades of Light Music – Vol.I, 1920s & 30s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57336d6e2133b297dbb44e477cc149a2a73293cd988ae984865ce1eae16192a9. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/BEDO62419366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bb9918f36dff9457c1c7dd21bd81545c785e011aafea258134c2f2b160ba0ce. 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/BEDO62419369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a18d90f5d96487d6427a44edaf5e16620db0840de75871da00df70b2135957d. 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/BEDO62419373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cc7aba8df6ee8181e903fe507d538130a8d759baf5c7c996e93a0baa79beef. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USA371024987.