Vernon Joseph Roberts (24 November 1921 – 29 July 2002), U.S., Social Security Death Index, 1935-2014, Number: 342-32-6149, Ancestry.com. Retrieved 20 May 2019 known as Mighty Panther or Mighty Panta,
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 0xd9b0dfe51a6e78160802c8b12fc3a9b17339bbc5acc3bb9b53e706d046e129f3. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8bc18376-4f03-48a4-8d53-3d65f2bce7bb.json and https://artists.proofprofile.net/proofs/artist/8bc18376-4f03-48a4-8d53-3d65f2bce7bb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Calypso Legends - Mighty Panther / Macbeth the Great (1953 - 1956)
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 0xf4a142039e18dfa80c15846346908f79f1f5dea013d4a7479209cdd057d2373f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GRHR11162101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a104ceea1a343c7a967723627723d5294ae31872ebc9596f2bc86beb1382a11. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/GRHR11162104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260989fe951b2f9fb7e00c796630b55d4a2812799b2730f9059fe1515dd07121. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/GRHR11162106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1487fada00b13de80dca3d45bae24c77f7e0e8a15e4b162363ec3667462ac4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GRHR11162110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492f37ebc11491d42b944854ec0e2b085b9da78d0523a9b19b6209bfb5618614. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GRGCM1860201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77db099a09a4e54ba1603975896f9cd3bca7309baaf96e526251708faf560b9f. 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/GRGCM1860202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183c48686feec4df9b4c5f12b4bf78e32e60846b0d0522976a3c6bf380290968. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/GRGCM1860203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7fbd7ca80ac5593843f8f2a7fd95f2a8bba7155964cd608a438984c27a138c. 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/GRGCM1860204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f11e097871e02c44a6d0279be5896ae1654acccb1e49ba7e076856fb2b3ac2c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GRGCM1860205.