Tim Gallagher is an American writer and wildlife photographer and the author of six books: Parts Unknown, a Naturalist's Journey in Search of Birds and Wild Places; The Grail Bird, Hot on the Trail of
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 0x3e4a1869942a71a0dc9662b6a02ef446ea6f8ddd74f52e35d3d9a26cea49d7ec. 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/1b998dc8-6349-4f68-a8c4-5684d7e14197.json and https://artists.proofprofile.net/proofs/artist/1b998dc8-6349-4f68-a8c4-5684d7e14197.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 0x9e329e2a27061db0d3d0010bbff46bd81b95ba88c186985e0ac9cb0f52268e00. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T16:28:12Z), 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/US7VG1783128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5870e04407142252fc2c7b85e09c558f650e204eafd482181d7a2dc19b5c28. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZ5AB1841829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4ac0afd1b9717d32548315d1e40d92cb53004e43d98cb2c0954a99649c6288. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GBRKQ2000935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6682e923a6345063fae67d78f6d0c84ee26ff84c73712961e5ebd5de544f22. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBRKQ2000973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a6ab389b0140c603a109cc0c1d5dc75ac0bcb05a8d010b1e5b2d69169574c6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBRKQ2001097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89efc6e2d1404dfd4171bc3081ed3b9b19e693c85c98c6dc0e8b80fc935593f5. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/GBRKQ2001110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66a19667ac1e93e6ceed2c5ef3fa0e45c678c13faef2e2ef7f4b2c82a2c0b93. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GBRKQ2001123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f121801d558a8b7a97645aa91f648cb1a2cb71f03e49bc15ba506258d2569a5. 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/GBRKQ2001153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30daa814668f94b7d8e82cb54b7651fa02139779b0e8acc5db1bb602094de403. 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/GBRKQ2001161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef625269a9b80d039960bc19c29dabc7e94e29457727077ed12b86a20cadd3f3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBRKQ2001163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3580d85fe395eca0fb48abd7269c3c0506bbabedf4aab52bcf0cbe9f35d095. 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/GBRKQ2001185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce13adb97ee2d046299c9d260ad6e83aa89507fdbed318258cc687691b1285fd. 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/GBRKQ2001809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9ce6837bc587ad52f9701f5b6f58914a49f602c915d37e5955dafc9b8b4a13. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/GBMA21942055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4941413966fbb5a8402e2f0e7914c795eacba20c2d932774139bb46e9c4755. 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/QZHNA2118549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3dc2dcb782ccd7a2ca6b878d20c74c326677b83c2b4777576d80b2fd20a3e7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZ5FN2067131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468aa3ab07af8165e21a61dbb70bc62b07153c33c125dbf4be581802ee11683e. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/GBARL2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468aa3ab07af8165e21a61dbb70bc62b07153c33c125dbf4be581802ee11683e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBARL2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638bd88e5a9a2d40f2992263354f1057a3cf0a2a0305104a3956c83f6e08af2c. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GBARL2400926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac1edca3a68ee2080368bb9234d6ebddeaa243009576e810b149e67ee6c340b. 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/GBARL2500282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc29316a2044b088db4dc72c0f4571ddecf604508fec0a78dc82277a3d307f54. 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/GBARL2400374.