Roy Alexander James Blair (13 June 1921 – 31 May 2002) was a New Zealand roller skater, speed skater, cricketer and golfer. He was born and died in Dunedin. He worked as a teacher, and in the Second W
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 0x09e2c32c8f6722c53153b56f9fe9f9fd22d24862a0131f154d9d8d00107af5f0. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/696b02bb-a220-4234-9296-e3ca547a91ee.json and https://artists.proofprofile.net/proofs/artist/696b02bb-a220-4234-9296-e3ca547a91ee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xd93472622b2a0d4e6eca2166ffaa6f4c3277d62074316457491a3adc9e941fb6. 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/USUYG1169677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330d667507281f4769107807ed6bb277c0205b3cff072eafa3d42cd25b8afb85. 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/USUYG1169281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3d31f93ee70abf2c1f7565d69b96d7f305099181d113a5591a3d5f766fe08a. 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/USUYG1169282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c088994816d171d96d2998aed1f15243be070111d449a30e41b1ae37c522e5c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUYG1169283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781857b39861a90b1677dcc3d0237f4a0465f89facdcbcf84d8ce7bb79f3d007. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUYG1169284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c3338875ee80d3db03a2a4448eb91e1dd991097a1041ac0fcf13137adf05a6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1169285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b55cc2fb51a197d87a8e592e0fa5b166320b32449662b1620dc793de34f147. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1169286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d56764c76115c95c56376e3ccfe885ed3a14c0ffbf94024f60f7cc9d664c874. 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/USUYG1169287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45420eddbe46a8f66895aca53669b7d31b639b8132afec3bea8ee8986ae8fbbd. 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/USUYG1169288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812a15aa442e41daaed96d6b434b7478ab3ce87d8933ed7d707443604972cdc8. 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/USUYG1169289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x340d4b73e2e05a054d84e90d83189b6d4c6f21767c3fe7f556416743b6a62875. 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/USUYG1169290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04791884fc804300725e39978a03c5d5dc1351918ae1cce1e4b76d1f3cc5df9b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUYG1169292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755dfdcdc5f5fa259eb28d4bd7a9232c0157f7f949daaeac9d50bdff2f0b4b00. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1169678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d14bdbc0f6688d72570b2f4a92d5575dfc67d4b86ba2f8bf1e8c1b3e1ef22d7. 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/USUYG1169797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5dfc05b4cb78aae246b76603a127162deb741ceb6aa42bc48b431982206b0a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USUYG1165419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cabc333735f9c770cc2fbc9cdee7abe2e5041cdcd88ad141f20fed47a7233a3. 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/USUYG1106230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd70f4814ae07f659db541af860b42dc1325d61f20ce874e017fd288dec165d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKPL1810690.