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 0x01f786d8bd51b518b65014b41df0e6da3788678d738b0542b9c445727dde5956. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee61163c-4883-4a16-8f5f-be57ee1538ca.json and https://artists.proofprofile.net/proofs/artist/ee61163c-4883-4a16-8f5f-be57ee1538ca.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 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 0xe429d03f14d7926db3a7c24678a83c8a7455a87cb8a119289e892cdc7989d18a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/US72W1611484.
Where June Meets July: VI-VII. The Cicada's Song, Pt. I & II
In Medias Res (Between Longing and Mystery)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d7a4fcb675e12bb2c51566b32c723c1f474ff8fa08c39154f329eb6443bdfb. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QM7YK2100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa364986ac1b508fc428ae42e4fb9d29f032369a4283834b00115074a340f012e. 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/QM7YK2100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a96dd35ed95d8b29ef66c30094df5e764860af2a9fc3559760008447ff5262. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QM7YK2100082.
Where June Meets July: II. On a Road Trip That Summer's Day
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb30199c17cc84fb5f3124113c11dd57a5cbcf7dc901ae5ffb531c1e455a6cd7. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QM7YK2100084.
Where June Meets July: III. at a Dance Where the Stars Cross
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdfcf3f8e7ad50c857595fefef3bdb30368002157d0fae725d4938a98654b711. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7YK2100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3bb6d6b49c26fdeaa348a43ce3fc38ea5cb288a932662bbad665daf2a8e267. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QM7YK2100086.
Where June Meets July: V. Maps (To the Tune of "The Great Midwestern Summer Jig")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7972d75e24ca0faf4ecc3c4160de1cd667bb9449a3e5e737305233d78e54fb64. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7YK2100087.
Where June Meets July: VI. The Cicada's Song, Pt. I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcc52b29ccc2fe49141fd54d9d6691785732365d1948e69edddbdad5180f5a7. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QM7YK2100088.
Where June Meets July: VII. The Cicada's Song, Pt. II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9644d884060ad1136a4b975a4390ad2f98258d539e9d46cb0403040b0a7d1ccd. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QM7YK2100089.
Where June Meets July: VIII. Secretus Liber (Beneath the Fireworks That Fell in Mystique Participation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c9aec2646e91843a76c95aa9f1f67073238b2eb3acbfc8a0787187480e950d. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM7YK2100090.
Where June Meets July: IX. In the Space Between Pages...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d948012eb4e9d033b141b88a1e3364c1901a474c6cec93c9e6b3cf33d1826ec. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QM7YK2100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccd6de8405da7b03c3f950860a8daeefdcc1843ef3f84575ca511de4bdc061c. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/TCAHD2328481.