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 0x4a4157fdcd2fca0be7ef1eb8682d1363324222538c7a1a6d63b4ea414c3bb587. 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/9a3b5122-912b-4d42-9dc8-f6660ee6787d.json and https://artists.proofprofile.net/proofs/artist/9a3b5122-912b-4d42-9dc8-f6660ee6787d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Le Constructeur de Malheur (Original Motion Picture Soundtrack)
The Sunrise Storyteller (Original Motion Picture Soundtrack)
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 0xfe5493b645971a4ad3e394821126f9cedcbeb27e8f1e64e6eba04cbf3fa4e512. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEGR81711658.
Keeping Christmas (Original Motion Picture Soundtrack)
Tour Du Togo (Original Motion Picture Soundtrack)
Grenzerfahrungen (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98fc196d265ab8eee6c863d9cbdf8f9003f43d2b5abf4dcb163ae8fa5dd75d9. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM82261771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b33ae4dd6b11bbe1cf243e7959c109574b449b0ac2d6cd9d9a35b641b1dc6e1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USHM82261779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7588193e59c29ba3eadcfdbab4d1a34001386868ba1e04ede3b4c5ddec8230. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM82314127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7389b7b9c5457b88e496b022c9acf312204e02a1ab60634a4320d260380559f3. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USL4Q2364150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812c127b5ba92a9555fc5f58d716def79cd141aaba68f2184d23d73e3644de19. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USL4Q2368917.
L'Hypermnésique (Original Short Film Score)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771d13b6c5f120ff7e1fad4ebc96e6049ffef20f22b9fafca47f24bf248aa29e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/USL4R2359847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2ae4a9f3c49dce84d7a6f529ef05880635822b35f12d4109149e37bf4edac5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USL4R2359849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe625af52b0db12d8fa79abaf35661cc5da34c4949cba1aafe020f857dfe6f69e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USL4R2359850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d232d5342640ae702727ad6fde8add75b53a975e73ef6a48a27c9ed50e6b5b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/USX9P2353475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe813797fb370796b177fde2a6984ad6b877c47c97cbbb6b89c7e4fd21fbcee38. 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/USDY42411767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410d48412ce7b45c6141f9edd60217d8d2b9e90c50929206b627cec6c238f0ba. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USDY42494378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8a783d4a735f2ec593004543dbe75c0a0b2f0b74505ac567b35dad8646f129. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM82489688.
The Forest Awakens (From "Die Seele des Waldes")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b29f062aa07599b3bcb233229aae8b09153911954b31bb5aafa945c770098a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USL4Q2498941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c2a072a4b17874dcd7f82b3460fa295fec602d29470e3d4f93a9e05d89cab5. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/USL4R2423388.
Signing the Bill (From "Dust: The Lingering Legacy of 9/11")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a869070064a2f9127ec56441f985bac09eff34d04febbe5f089780656960d47. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USX9P2420733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2688c9cb3b5a7770f55d01d1621aeaa06ade2833e284e5908a0c9d6955dfafc0. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/USCGH2568191.
The Fire Cats (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85aa3adc515824c706568862e3d850de84824fc02a5e4c670912facf90746778. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/USL4R2590982.