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 0xb3a57cbf9aa5af21b68650a9b71c981074a80706b5fc7d691cf5959c138ff20a. 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/bb925934-c94d-4df1-b07e-ecd0864014f6.json and https://artists.proofprofile.net/proofs/artist/bb925934-c94d-4df1-b07e-ecd0864014f6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Stress Relief Music Sleep Music Meditation Music Study Calming Music
Schumann (Kinderszenen Op.15, "Scenes from Childhood")
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 0x3b655e313180d7b0f190bbd89f4ec4c7168e2d439077289d51a88a91f22a8d20. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWQ2213316.
Kafka Metamorphosis (Original Motion Picture Soundtrack)
Grieg Lyric Pieces, Book I, Op. 12No. 1, Arietta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5178f730596c0c8cf3ae80ebf2bc777987795c2e8588c2616ee9575455c0b98. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHN52371547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209d26b620e53448399916b29f1eb3b0548bc0e0569489ba0fb86031bee06bb2. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZHN52371549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c026df9a1a69f06a32157cdfc027bc0a486a34acc2bfbc8a7472293e73c5e76. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/QZHN52371550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6c18c5b7e81ddb49fe8d9f21412e0aa1b607392857aa05df68216d3e11ba15. 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/QZK6K2392547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb85c799a04637586e4740552bff2d798dbf55a57d9aa3aee5132ccb5818f7f0. 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/QZK6K2392551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb099382f1283b80e855771fc8572e1e22611fe23988f8262d114b86859deee54. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZK6K2392552.
Stress Relief Music, Sleep Music, Meditation Music, Study, Calming Music
Edward Elgar-Enigma Variations Full Piano
Stefan Zweig Chess Original Motion Picture Soundtrack
The Sorrows of Young Werther -Original Motion Picture Soundtrack