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 0x9ea1cd9bfe8e6ac02a085afd4aefddcbaa0ce69f47c7663d18e1531910b9f370. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e37e20f-b612-42a2-9aec-ce1bfa577779.json and https://artists.proofprofile.net/proofs/artist/3e37e20f-b612-42a2-9aec-ce1bfa577779.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lucia di Lammermoor / Act 2: "Chi mi frena in tal momento"
Coro dell'Accademia Nazionale Di Santa Cecilia
Orchestra dell'Accademia Nazionale di Santa Cecilia
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 0xb1cfc0a6f471bb24dd13623fa7f678fd08d3015907680726c1ae5acaf2854821. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBF076140921.
A Midsummer Night's Dream / Act 1: "Is All Our Company Here?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5790df1a9e6a4e0ea4e48b82eab2856293bbc362ab926e48f6314b7d874820b. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076640407.
A Midsummer Night's Dream / Act 2: "Are We All Met?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee1c3b701926ce4702d55949f1561475e36239069febc25364319a8619fa260. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076640415.
A Midsummer Night's Dream, Op. 64 / Act 3: "Asleep, My Love?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48aad11339abf7c27ed09c3f2ecfda68021722f2da96d4692602572fae4caeb. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076640439.
Don Carlo / Act 1: "Il glorioso Re di Francia, il grande Enrico"
Chorus of the Royal Opera House, Covent Garden
Orchestra of the Royal Opera House, Covent Garden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ea28eae7bff0d6dea2ee7d33a3a90b4645d58229aa6ac04e1b3bf54f9fa572. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBF076540310.
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
Don Carlo / Act 4: "Il Grande Inquisitor!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a31224eeccfce28cdfc2394e591a8e5d35fbdc2784b2269c99f69b65f9a42a. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/GBF076540331.
Don Carlo / Act 4: "Mio Carlo, a te la spada io rendo!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9a6b7c68530eb2c6329c4c78f8f5544cfe740c5cd8873547c531340f8854fa. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBF076540340.
A Midsummer Night's Dream, Op. 64 / Act 3: "Have You Sent To Bottom's House?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55dfbfad298cf3d835cf02925e7bae6692d619f05d29440115dab49c2c60e6f8. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), 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/GBF076640429.
A Midsummer Night's Dream, Op. 64 / Act 3: "If We Offend, It Is With Our Good Will"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6f5940dfc42c49f5fcfc77907d252b7240f5dee3a9af609f63fa0f8d1b0c77. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076640431.
A Midsummer Night's Dream, Op. 64 / Act 3: "O Wall, Full Often Hast Thou Heard My Moans"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ce0c7cb8af421d0cd6977a189df6f333b49a09f2f6480798ec061dfb13bdc7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076640435.
A Midsummer Night's Dream, Op. 64 / Act 3: "This Lanthorn Doth the Horned Moon Present"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c54f9b9982bc696b07693b68e35f9318d8ac8fc5be9746bf0f852db048201d. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBF076640437.