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 0x7182eb4966cf24d2009926e00d8c729e72f7cc71f52bb03ebf86f4f004b86f4b. 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/12099deb-75d6-47d0-a98d-ac3be4a935a4.json and https://artists.proofprofile.net/proofs/artist/12099deb-75d6-47d0-a98d-ac3be4a935a4.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0xb8e8fcb0bc23191f090b4d4f9111db1d20e02eced0dfd32cea200a9d66a5c42a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZFZ22193081 — a six-check JSON result.
Star Trek: Voyager Main Theme for Guitar (Television Series Soundtrack)
In Dreams (from "The Lord of the Rings: The Fellowship of the Ring)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd513d0829bbef6dc308a476b62e76c7f4a208f6b61e5455466ccfa2d5a84f0. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA72259373 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74e28422e75d6280b3ae75ff23718b9b01c4686be133bdda0a1e835fdb039ad. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWV2222477 — a six-check JSON result.
Nothing Else Matters - Instrumental Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd34b48e7ce11fe53801bfcf577f126aefda9a760343a706293c9fa67c1fe05b. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTAT2270220 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047057a7d44898489fbe5d94cf57fe6a7d1b6ac1954777548fe2a7f5bcf2f09e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA82348447 — a six-check JSON result.
Supermarket Flowers (Instrumental Guitar)
What Was I Made For? (From The Motion Picture "Barbie" Soundtrack) [Instrumental Guitar]
Inspector Morse Theme (Television Series Soundtrack) [For Guitar]
Inspector Morse Theme (Television Series Soundtrack) - For Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2b1c01b9d0c1aec610cfa7a8ca8842552d6902ff53c957f96465d9c0a879a0. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTB32367032 — a six-check JSON result.
Dance of the Blessed Spirits (Acoustic Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5793d0640ec67fe1a54f50849d0bda920ef562a98eb34b836a41d215794253c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZDA82421986 — a six-check JSON result.
Bourrée [From Suite BWV 996 ) (For Acoustic Guitar]
Valses Poeticos No.1 `Melodico` (Instrumental Guitar)
Valses Poeticos No.1 `Melodico` - Instrumental Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f356efa45247bca1ce640a6339311c2b03d12845fffb884a98591aa8f445af8. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN92410667 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5769c26c684fae1ac0dc9f9fee4798faeb8f66063bd5a418e45f1a72026be256. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFE2446937 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579591882301a88f6386163c375371529cf95d66548b7c3ba528f880aebbed0b. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZWFQ2424296 — a six-check JSON result.
The Four Seasons, "Winter": 2.Largo (Acoustic Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24192899296358c69f853487238a2eea98ba99208ba519edd158eafe4bef508. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES52562712 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8053cd12a09d642b7086a2ce1a72c0f8363e30c61f34fd0ca5fafa2c6cddb6. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN32548486 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfd6241fbb20a1e602fbd2eb74ec21b1449bd6ef6770f41fe14daae5b922986. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHNB2556435 — a six-check JSON result.
The Things I Never Said (Acoustic Guitar)
The Things I Never Said - Acoustic Guitar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1377d06fd0db9360bb1859397ff8d3204730546cb0ff74dfcf51139af48e1354. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6J2571214 — a six-check JSON result.
Sonata in F Major RV52: I. Andante (Acoustic Guitar)
Mozart: Andante, K.545 (Acoustic Guitar)