{"copyright_id":"0xcfa0b8b1aafa69ddb5fad50b074047e1faa45fded2e113fcfd0f3df5318b39fe","name":"Rosemarie van der Hooft","registered_at":"2026-06-17T11:27:52Z","symbol":"NIM1381132","token_address":"0x4a9a0dffc0d6ecd8a2477b46e4272bff64f27949","type":"artist","uuid":"8362cb8d-1fe7-44cc-ba37-53cefc39db6b"}
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 0xcfa0b8b1aafa69ddb5fad50b074047e1faa45fded2e113fcfd0f3df5318b39fe. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8362cb8d-1fe7-44cc-ba37-53cefc39db6b.json and https://artists.proofprofile.net/proofs/artist/8362cb8d-1fe7-44cc-ba37-53cefc39db6b.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
The Tempest, Z. 631, "The Enchanted Island": Masque of Spirits, Act II, No. 2 (Trio and Chorus)
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 0xf9d3154d2d24c75b6902489f7b5105b0332cf702f321770705b6ece5717682b4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199737502 — a six-check JSON result.
The Tempest, Z. 631, "The Enchanted Island": Masque of Spirits, Act II, No. 3 (Trio and Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ab6b5e4cc1be25841298d72e5200922dd832a8fb93c817aa907f343967b187. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKI199737503 — a six-check JSON result.
The Tempest, Z. 631, "The Enchanted Island": Masque of Spirits, Act II, No. 4 (Air)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012103528ecd0b49e3dfafdf1be2d60cb3a1bd0c2bac2627587dc4f85fe89324. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199737504 — a six-check JSON result.
The Tempest, Z. 631, "The Enchanted Island": Masque of Spirits, Act II, No. 5 (Dance of the Winds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5524319bb8683b082bfcebbee4cb5777943b3264317dcc460b2f0397dd702bff. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/HKI199737505 — a six-check JSON result.
The Tempest, Z. 631, "The Enchanted Island": Masque of Spirits, Act II, No. 6 (Song and Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d9cea396d16fa0fea204458d5af6d9b61e24d63e494980aa36e04c137e71c7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199737506 — a six-check JSON result.
The Tempest, Z. 631, "The Enchanted Island": Masque of Spirits, Act II, No. 7 (Air)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355ff9674c852b57f24ef5c43b25951b86709892ad0d059cfd697b68fa47a927. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/HKI199737507 — a six-check JSON result.
The Tempest, Z. 631, "The Enchanted Island": Masque of Spirits, Act II, No. 8 (Air)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb58dd30833723a265bb428b357a92be84b28971be608b27798ea44803235ee3. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/HKI199737508 — a six-check JSON result.
The Tempest, Z. 631, "The Enchanted Island": Masque of Spirits, Act II, No. 9 (Dance of Spirits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x640b27200af344c2a448641a223eaed868cd7cdaeab04e911d52546d2b3ddb8d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/HKI199737509 — a six-check JSON result.
The Tempest, Z. 631, "The Enchanted Island": Masque of Spirits, Act II, No. 10 (Air)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15813775319b8ddee572c187a8dea6515587e89450a217f9eea1a0215ab98397. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/HKI199737510 — a six-check JSON result.
The Tempest, Z. 631, "The Enchanted Island": Neptune' Masque, Act V, No. 11 (Recitative and Air Amphitrite)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b6b273fd4f2a5b695823088301ecc3ad93fe3ec20af7059ec0838dc2be57fb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199737511 — a six-check JSON result.
The Tempest, Z. 631, "The Enchanted Island": Neptune' Masque, Act V, No. 12 (Recitative and Air)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36044b9e0c7c0752bd71cfdccd1fbbf18f64d487b785b951dc6688d737579c1d. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199737512 — a six-check JSON result.
The Tempest, Z. 631, "The Enchanted Island": Neptune' Masque, Act V, No. 13 (Recitative and Air)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb62faf2f1987483d84e469fbaf55413589842097134d29b5b7d3fd0aa6ebfd. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/HKI199737513 — a six-check JSON result.
The Tempest, Z. 631, "The Enchanted Island": Neptune' Masque, Act V, No. 14 (Air)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809c792c470c9e22784dd24efa9eef749379f7ae4e75836a33bf1b62a71df3e7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199737514 — a six-check JSON result.
The Tempest, Z. 631, "The Enchanted Island": Neptune' Masque, Act V, No. 15 (Air)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e914f486e66ea165a2a8681d9f110bcbfd0669b5ef14b999ef5a236b33ce79. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/HKI199737515 — a six-check JSON result.
The Tempest, Z. 631, "The Enchanted Island": Neptune' Masque, Act V, No. 16 (Duet and Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b1c44d2cc5a7e8fedd97dd91c1ae4d79e0c04a44f8389d95c1c5571e414fda. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/HKI199737516 — a six-check JSON result.