thumb|right|Alan Styler, circa 1962 Alan Arthur Styler (1 October 1925 – 1 September 1970) was an English opera singer, best known for his performances in baritone roles of the Savoy Operas with the D
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 0xea1b952e2a23922352e839f90fe570a5522aca525cfb16e3cc7b6f332bde2e22. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6bbd61e-1b4e-4d6d-a0f7-f3dc712e2ef5.json and https://artists.proofprofile.net/proofs/artist/b6bbd61e-1b4e-4d6d-a0f7-f3dc712e2ef5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Sorcerer / Act 1: 16. Now to the banquet we press
Gilbert & Sullivan: The Sorcerer / The Zoo
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 0xf880fe4b97e8345b4cb98bcda25ae5ccb9ed957514710cad2ac95dd581313ed4. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBF076641517.
The Sorcerer / Act 1: 4. The air is charged with amatory numbers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120156fbfa51b2a6e25e472aea2314945820cea4695262b07e955f5fa0486a07. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/GBF076641505.
The Sorcerer / Act 1: 5. Time was, when love and I were well acquainted
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe483a7685b57171911d2787c5ed01dd83c86637693d61a2d48f525a1c12af37e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF076641506.
The Sorcerer / Act 2: 20. I rejoice that it's decided
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03d481062410a30164759a79cf59fad84461c8840e6ce6fd1929309d3035c40. 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/GBF076641521.
The Sorcerer / Act 1: 6. Sir Marmaduke...Minuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900f4e36767b2b868a194fe49091e9718d611d3b3919e15616d16631fd33997f. 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/GBF076641507.
The Sorcerer / Act 2: 23. Oh, my voice is sad and low
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0cbc066fc300e6eef5f8a3968f79362f2fb6398fe94949c55ab48b04e7fdd3. 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/GBF076641524.
The Sorcerer / Act 2: 26. Or he or I must die
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89fc69230119982942114e0e13e702dc7b6d5cce97a5f2a9e3e621c1cce2b3c. 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/GBF076641527.