Zachary Taylor (November 24, 1784 – July 9, 1850) was an American military officer and politician who was the 12th president of the United States, serving from 1849 until his death in 1850. Taylor was
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 0x6f3ebd5e53554ce11c64459354741c6ffacc5edd853c7cf794bc8a37cdfd1471. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba47a06a-9d67-4ec8-b63e-c8c3c2a370bf.json and https://artists.proofprofile.net/proofs/artist/ba47a06a-9d67-4ec8-b63e-c8c3c2a370bf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hildegard Of Bingen: Choral Music (Angelic Voices - Heavenly Music From A Medieval Abbey)
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 0x633c2be2429b897800eafb62a0f9aab40a8f489dc8facf36e0f0b92e362e7f11. 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/GBCJG0200135.
O successores fortissimi leonis (O successors of the mightiest lion)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ef1271e69508aef17c344df57af41c65b95f5f369270b410a80e91482f6cf5. 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/GBCJG0200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf51ac21412e58c4e76fce5559a5239e3be504ad1eba02fcbf455767e3f3bede. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBCJG0200137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3ad307cbfaca0a1261a9c8560918372ca74782b846c0e24ec35bd9927397a2. 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/GBCJG0200139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1984c6c3b0da003d25e0fdc88f34dc23e671f9b9a35cc728665906e9902b7679. 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/GBCJG0200143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0342530f4b44da57e2e4f280361aaac72f27020573e62010615ffe98f4d05317. 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/GBCJG0200144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f484089be0732e96f17a9fc6ec6d75ab82c164a0c1f08473e83f627a5c9635. 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/GBCJG0200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316c633629962a0b1a08fee54351d0dcc807de57f3c1bc673d9014246c2b3a8e. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/GBCJG0200134.
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 0x83fb999d69b4330ed07d68d496aaff5f2d19cfc97cb37270383ce4a3679f4330. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GBCJG0200140.
O nobilissima viriditas (O most noble greenness)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05694a4e36460ded7b607f19ccc6007ea09d31c504df3bbddacddfc1a5e88b34. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBCJG0200142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4597e8bd60ca81969b9d8e2f7612d5049b764e206f553fac4580e9be7de6ff6d. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBCJG0200148.