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 0x2c2fe02e6083d9faa675a9968375ebe9930bd43d778fdac0e5f16d717e6e1cac. Chain 2 (Bitcoin): anchored in block 954647 (2026-06-21T04:36:58Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d67bee92-8b2b-4958-988a-38fbf99e8869.json and https://artists.proofprofile.net/proofs/artist/d67bee92-8b2b-4958-988a-38fbf99e8869.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Horn Exam Pieces from 2013, ABRSM Grade 7
The Veil of the Temple, Cycle II: I. Primordial Call
Brass Ensemble of the English Chamber Orchestra
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 0xc06e2ddfa1720e7bd266e1db1744036459c75c906c957ead8bb9ae72740a0f18. 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/GBLLH1336703.
The Veil of the Temple, Cycle III: I. Primordial Call
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8579c1a1437a51540cd0c5c0aa5258f6e4e72c53293a12683e0fad1d8743e71. 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/GBLLH1336712.
The Veil of the Temple, Cycle IV: I. Primordial Call
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28de901c40385cacb70c8a6291cd3b2f9b0642c84c0f959cb85c61be486886a. 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/GBLLH1336715.
The Veil of the Temple, Cycle V: I. Primordial Call
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5dab2fe34fd8239e6af29345ab3f33c3518a33af9864a74a133f85f513e36d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLLH1336717.
The Veil of the Temple, Cycle VI: III. God of Strength
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c9045510a7fa9865c7cd1ddf117cfed3eacf6ff9b9207aef24ab3c3d690770. 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/GBLLH1336723.
The Veil of the Temple, Cycle VI: V. Te Re Rem – Ecstatic Chant
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4766306006d202574ea13eba9b573196d8a09873ddeffffc3891a84a6e12cf5. 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/GBLLH1336725.
The Veil of the Temple, Cycle VII: I. Apocalyptic Primordial Call
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059c7a1dbaf909870031e627946ee3a294a522de84c9e707da5877bdc4278ada. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBLLH1336727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc283e91843a749b09bec93a6d3d5813c293d551be90a8529e20a6868eb9aeaf. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5021702672.
The Veil of the Temple, Cycle I: II. Primordial Call
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a0386d9a006db83340d429b057a5c5eea265e3347b14c135d4b3437df9ec31. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/GBLLH1336702.
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
The Veil of the Temple, Cycle VI: I. Primordial Call
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b4f887575af57efb905d0da3fba13c20345c55c1d1bcd5250d1be5ad1b17ab. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBLLH1336721.
The Veil of the Temple, Cycle VIII: IV. Rending of the Veil of the Temple: Maya Atma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f94dd48dc0dfd66e858785c35d1559012d68be5ddcbedbdb22dc561e34da6c9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBLLH1336739.