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 0xdfe551d6ab3d877c6698caa27030f72ea40ed6ab532c4f8faf289866fd32142d. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/339fab55-9e78-4b5f-a2cb-d3da1a5b5469.json and https://artists.proofprofile.net/proofs/artist/339fab55-9e78-4b5f-a2cb-d3da1a5b5469.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f829b5191b86933b59acc6a232cc0d9fa6012024d5326c3c65d71e7fcf056b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEB901200348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b40cb57d519cc0047b0a80c0277b7f7fdc10e4b5d8dc4527a1ced5fbff9fb9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEB901200372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac7b9744dfc25607524595f3c6532807c08b3b8f72d41bedec01764b0154e32. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEB901200319.
Lute Sonata in E-Flat Major: II. Courante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa434ccaa7335859f0d933939530109c9f1c86661ef34c88d1fda87e652721ce1. 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/DEB901200350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b1dcaaf220d5d091c9c696481fb138a594768cecd3ad8162e0014160873ea9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB901200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c1dcf45c3c42513889c11595de3521947ea20dd0850624537c0c0864820ca4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEB901200304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d800b21e0d0c0b12dacb9e9905147101bf9b932475f8584b7e4562a57b0fda3. 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/DEB901200321.
Lute Sonata No. 51 in G Minor: III. Bourree
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb92df77d2b7ba1da153616c86067a3ccc523650abb1497cf70a899d98852cb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEB901200313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee880e542ade1075364ad17b7979001e3176256f6ec8e8fb6399c43cb427498. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB901200332.
Lute Sonata No. 51 in G Minor: V. Menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5749eccc3c7398eda6f7f35e0052713c035e5e9eb8b444921c3607d869cbede4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEB901200315.
Lute Sonata No. 51 in G Minor: VI. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566ffbcde1d562560a3f90daeb97801f1b912fb3259820ea28dcc2bd91a51884. 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/DEB901200316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556e347f1ccf1371097cb7a3336bed1d451059221b7924e1ff0ea4337cd15f8e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB901200334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6236e0a4e54cbc7f0e491dbc25225bbcfb804ffed1e01f4e8476222fae44e448. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB901200335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70952f7d651eba020a18facd407bdc3c030c60e0211728541e06bbc5798c8ea6. 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/DEB901200337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd016273944387fd028b9f11e3aba221647e7c032f4a07ad9aca999ed4346db6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB901200342.
Am I Dreaming? (Contemporary Music for Baroque Lute)