thumb|John Ayldon, bass-baritone John Ayldon (11 December 1943 – 16 February 2013) was an English opera singer and comic actor, best known for his performances in bass-baritone roles of the Savoy Oper
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 0x74418fbd2d280ba027795021c163d24e3d3e4f73cb294b2f81bf4b3e53b85943. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/beb86546-cf63-4895-a92d-974511b0a721.json and https://artists.proofprofile.net/proofs/artist/beb86546-cf63-4895-a92d-974511b0a721.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
4. In every mental lore (Scaphio, Phantis, 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc072ba6f5076e30087c8c77e2b671896fca5a9fee032d7819023a482e7b3dfa4. 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/GBF077541805.
The Mikado / Act 2: 26. From ev'ry kind of man Obedience I expect
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cffa827d85c96cb2ca295775eb60c09194168de8428d317ba336cead46b5d53. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077340127.
The Mikado / Act 2: 27. A more humane Mikado never did in Japan exist
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72467fc67a795d5d35975102dff060f52ae745336849f39c00a9d5d235fe70c8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBF077340128.
The Mikado / Act 2: 29. See how the fates their gifts allot
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e45f7266c372bdfa336f2edfe770a3a62e5c7827bf74ee5175010884e35b96. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077340130.
16. Altho' your royal summons to appear (Finale, A. 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639e852d888540f9d6752a69e22a6d9854eb345cf1d747155b77b7c0ed57c85f. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBF077541817.
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
17. A Company Promoter this, with special education
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057b3c6c59bf68a8452f9c8211ce60310a0884ef108b3e01d86b97fe05b8ee72. 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/GBF077541818.
10. First you're born (King, Scaphio, Phantis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f3323a885bdf6bfe3e4077ed3dd1927724cb79aedcc7a5df61c4bfcf687817. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBF077541811.
5. Let all your doubts take wing (Scaphio, Phantis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4679dfc2722d204185a48c9af24013f110dfbb657f7d75acf0030e96e5da3d15. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GBF077541806.
14. It's understood, I think (Captain, Zara, Saphio...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f2907dab9eb81dfd289fa1011f687884df4877325086820e54fabec525d8a6. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBF077541815.
Gilbert & Sullivan: The Mikado; Trial By Jury
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c505be5ee16eda990914b598edbffd2e0cf42046e78a523f812056da9b876dc. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBF077443112.
25. If you think that when...(King, Scaphio, Phantis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf485f08f8186bfc3015377ceda78e0580185b04177e9175bef1d57bf3bbbec67. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBF077541826.
Gilbert & Sullivan: The Sorcerer / The Zoo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557aca3635d89baeb1c11cee899c6618b10fed7c2569e3c56369021bbefb626c. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBF077743013.