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 0x3aa5b621b9be5a7c90f4ef807e0d3d8d74390cf964f2b2f9d2b8ea846d31e105. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/745a52f1-5fd7-4f91-8509-56d78f4d3344.json and https://artists.proofprofile.net/proofs/artist/745a52f1-5fd7-4f91-8509-56d78f4d3344.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Just Couldn't Wait for Tomorrow to Arrive
Béla Bartók: Dance Suite - Anders Hillborg: Peacock Tales - Claude Debussy: La mer
The Windmills of Your Mind (From "The Thomas Crown Affair")
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 0x9d52a99936be10afe30a73b1c344118351e4847df565ee46fcbe758339e89fd5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBAYC2301876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5efee8c5a2f02c843178f7758d18c32c2660f5f7da870ae316afcab956ece8a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYC2301875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d52a99936be10afe30a73b1c344118351e4847df565ee46fcbe758339e89fd5. 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/GBAYC2301876.
Concerto de l’adieu (From "Dien Bien Phu")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa928061168243843ea8d367d5d9698db0f494ccaefe8238d9eb7305d6f64ea1d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYC2301877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa447506e1cfb13ed3fa09712d7deb8b9ea34ad3d7e0980ace5dbec8ec59e3034. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYC2301878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c569078502d977eaf509b180d8ddde821ad0e51c28dd2a176aac8d43e55555. 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/GBAYC2301879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5c5b4417e64aa419261582e52fe37a8560c745b9f61d3c534f8cf5bb215312. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYC2301880.
La chanson d’Hélène (From "Les choses de la vie")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3518d7b7b70b93ef258d30cb344659e0d9b2541f6b71a7beff0274bc5491a8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAYC2301881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5793aedca11557cca6dc684437cde497108c3fd84480d9c38373be27d80a5c75. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYC2301882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf14612aecf9f6737bce4efe324434fec1b5a98ab0a2b4f4a2f45e957764401e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYC2301883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fceda0d1dd72aa6d6cd1c3bf0035b46487b0e56d4644f635914266b9dfe1ec3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAYC2301884.
As Far as Florence (From "The English Patient")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48673b64faaa9c30506b124f70ed3e3b3ae84e2414587795c59bf0e55da5203. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAYC2301885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340136fd2153fcf9bddb7aadef1d686d671fedd36b12ffc22fe7a9f205227860. 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/GBAYC2301886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc101938e5db3f662629e95d3e6b76a2ea808217f2d90968c159caa920ec952e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYC2301888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdbfbf7c45f2b40c4c8239181b44b2431ca572fb7ff4d3c80a7e43b5fca814c8. 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/GBAYC2301889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae3e7945533aae4d4a825126b09335c775710a245af538216bbe020b6b3c149. 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/GBAYC2301890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c2d5fdacf429617e7810b34d8ea8ceaf6000f8477815022070de9f69e2ae45. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAYC2301891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfdf10f5699bcbd682d118bd8616419a45bd74b8301a9761e3247adb674e61b. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:21:28Z), 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/GBAYC2301887.
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 0xfd7feabe3971c6395375dba9f432f44f69b74881ada2991e5cd838ea5e06592b. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:01:18Z), 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/GBAYC2301892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e5c07c89214c2d14843289937cbe8c98789bfce868ad97755d74f44831129a. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/GBAYC2301893.