thumb|right|Holland as Little Buttercup in H.M.S. Pinafore opposite Michael Rayner as Captain Corcoran, 1973 Lyndsie Holland (12 March 1939 – 2 April 2014) was an English opera singer and actress kno
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 0x728e6f9078d0dc4fc07489223fd45a71d2e6c9b1ae5c3ce78c952ba6b6a9282d. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97797296-184f-4dde-9b60-fb9ad816a7f0.json and https://artists.proofprofile.net/proofs/artist/97797296-184f-4dde-9b60-fb9ad816a7f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Mikado / Act 2: 34. There is beauty in the bellow of the blast
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 0xd568038ade697252c8474e2fde7da16a7a067f23167793a62388f717a1fab867. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBF077340135.
The Mikado / Act 1: 16. Your revels cease! Assist me, all of you!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a78816ba33d927f9d5d015cd843826317b315c86c2202bca8e660a8b41ce765. 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/GBF077340117.
The Mikado / Act 1: 17. Oh fool, that flee-est My hallow'd joys!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543928bc77736580edb5669a720de8c9de7e75222e9d9c87a18ddedbce59fcba. 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/GBF077340118.
The Mikado / Act 1: 19. The hour of gladness is dead and gone
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9deadbec6be2f841d4afd026a4a62e9c736bfc94c77fa57d80496babb6b37e74. 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/GBF077340120.
The Mikado / Act 1: 20. Ye torrents roar! Ye tempests howl!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbaa83a5030ec684278bffd2cf7b199d55ed064f52ad4317f76e439cf9cbb2c. 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/GBF077340121.
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: 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.
The Mikado / Act 2: 32. Hearts do not break! They sting and ache
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35787a3f00a05ea7372d6078cffc316e17b8897f4f03d9473aedae35d7ee62c0. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-21T17:18:41Z), 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/GBF077340133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd568038ade697252c8474e2fde7da16a7a067f23167793a62388f717a1fab867. 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/GBF077340135.
The Mikado / Act 2: 31. Alone and yet alive
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8261c65cf626a2f9366f97ab1c1a91c9a86b391d2b9a33786e319ab9f74f60ff. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBF077340132.
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.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dea4ebb12c8e8b724ff19b01f55fb7f3b2fa2d5e244670c72d880ceb93a180. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/GBF077541810.