Tiffany Day was an Australian judoka, who played for the extra-lightweight category. She was a 2007 Australian judo champion for her weight division, and a member of Pittsworth Judo Club under her per
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 0xe194d2be8ec66feaa64cecfaf6dc4a90219febcd6377a7e174ccd46ab2a76851. 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/0c2d43e1-69bc-44c6-8e65-1f6ad15bde48.json and https://artists.proofprofile.net/proofs/artist/0c2d43e1-69bc-44c6-8e65-1f6ad15bde48.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 0x4039a45c11f763d88d7056d82013bad0d74793ebbd7fc68e7423a6de364438ca. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZFZ22040506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e18fba2e319b29071b1fc22fddb2547d692ebe5db54f0377d4ef790a3826044. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZHN72013989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70db0a0b235b9f0b2d930ad274b1d6a809c12b53d184c086511d3d16d5efcba2. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZFYX2185280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70db0a0b235b9f0b2d930ad274b1d6a809c12b53d184c086511d3d16d5efcba2. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZFYX2185280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x492c1325c8f2fc82d2f671cee9e3b70a5fc584300da3a2716f3e101fea92e5f1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYX2189027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b14eedefa2fc3dce1fe3997be0dafa1d80447b36e450e95b8bb8ca04abbf880. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZPLR2052933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5578d2e84513956709928d96fd10cfcb475ebab00bb8e210c36b6fce74c7dab. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFYX2189029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9975bb536312e336faf389f89e272617c8de3c2e09e91fbb5a2b4dd2830aa2. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHNB2150116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d85114d594aab8496a8f60f398f692fe23bcbb9dbdb3adf9d5270871810bc5. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZHNB2199899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63976b01ce7d1b4829c0f8448f417e87dfdc6f9248964d20018524b823a75daa. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QM3DF2156911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce6292c1dff7d745acefad7a1009b0fd48b32f9169b8b6d17e9285c87152710. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3DF2206963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f526749d8222a2a6c9cb1ab48d676e710c596d181964c999a53478b4223d61. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QM3DF2174213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b32e4bf6ee98a856c7ccec60931a3449d46a91fe1b16ea5744f6e9a84cbc2ca. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US3DF2273682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34097dc1275f4c8d8198ba64a7389b73379245ebfa82ce88c2b34c8a31d6f6d9. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZK6P2294388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7460b45ebe99f2984e1779272318e1fff5e736e9f42edff8086db7bc64d2cdd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US3DF2460052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dedba4dcfdde3ea8d4e1d4ac6bd9760791770791e9f2d23e38cfab0e6d41cdd. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USANG2407873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7460b45ebe99f2984e1779272318e1fff5e736e9f42edff8086db7bc64d2cdd. 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/US3DF2460052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f64fd1823ee6dce7d9a72b897b859fffe3dcd2a2fbf2158a04a5d1f43ef3e6c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USANG2465092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee93f467ffe4923449ff254776ec0e463215c82f0a01a8d90420491a2a4002dd. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/USANG2465094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86982411154b7da48b33256d749f521dd6240d8a7a8e610ef0ce68e11c4aace5. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USANG2465096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4462274a84f1e3c4bdcb8642a0e92b10352a0cfb6ff54b29d0417ec1d5a23213. 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/QM24S2406698.