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 0x73ab6866a249abeb87b215ae73b1e66697dd1e852626e7e18ae5c7bd0423e6cd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5c7479e-19b0-498d-a4dc-85046fe540c6.json and https://artists.proofprofile.net/proofs/artist/c5c7479e-19b0-498d-a4dc-85046fe540c6.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 Sorcerer / Act 1: My name is John Wellington Wells
Gilbert & Sullivan: The Sorcerer / The Zoo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3622ef8aa9f2dce415cf55e9e9335d8b76d8b1b49d29838233ca6805d3bf0948. 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/GBF076641515.
The Sorcerer / Act 1: 15. Sprites of earth and air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e71930554021c403b67d6c45790350e0a86c68ed7e148f68b941df25d5dd73. 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/GBF076641516.
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 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/GBF076641527.
H.M.S. Pinafore / Act 1: When I was a lad I served a term
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2f3d43f5858a4ffbdd53d6d770ba65b6abe6c5dc72489590e508ed69b8ea83. 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/GBF077112530.
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.
The Sorcerer / Act 1: 16. Now to the banquet we press
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.
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.
The Sorcerer / Act 2: 17. 'Tis twelve, I think
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afa51ccf018f7534b679de5588e4fa291f47d05872f46ba4a5353d298fa0bad. 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/GBF076641518.
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.
The Sorcerer / Act 2: 21. Oh, I have wrought much evil with my spells...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190a540ba0ef7e61bad1bf006fe2614d38f0423299742917a4eddc86a3f077fc. 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/GBF076641522.
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.