Deborah P. Dixon is a British geographer and Professor of Geography at the University of Glasgow. She is recognized for her contributions to feminist geopolitics. Dixon serves as the Deputy Head of Sc
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 0x26f09fabc2385650362a7331bee622cc16c4b80ad0fce2ef3fd98ad08c3ece0a. 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/53fd70cb-d458-43ee-94e5-3f5082008464.json and https://artists.proofprofile.net/proofs/artist/53fd70cb-d458-43ee-94e5-3f5082008464.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 0xb11c289b0a53283592268e5d8bffd6cc186a1543b61bed94569f9235a5a97b2d. 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/ARF411001014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb1d399b101e80b7b9b03600587b9eea044900b6817dc9708eeb69263ceacd4. 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/ARF411200382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b037fdd5eb6f063fa2ce3c6ad842d91da19b9cbe50f07c42a5919ef9ce52751. 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/ARF411101415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d83768c7d91ba30758abbcc49a9da0f99906b817cbd4fc1fad0e6762d4f26ed. 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/ARF411001009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb1d399b101e80b7b9b03600587b9eea044900b6817dc9708eeb69263ceacd4. 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/ARF411200382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11c289b0a53283592268e5d8bffd6cc186a1543b61bed94569f9235a5a97b2d. 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/ARF411001014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b037fdd5eb6f063fa2ce3c6ad842d91da19b9cbe50f07c42a5919ef9ce52751. 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/ARF411101415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70181451aaeeefb39ce118bf1d2f38f3bec3ca4773a4017bf1b4727745a06f9. 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/ARF411200717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d83768c7d91ba30758abbcc49a9da0f99906b817cbd4fc1fad0e6762d4f26ed. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ARF411001009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11c289b0a53283592268e5d8bffd6cc186a1543b61bed94569f9235a5a97b2d. 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/ARF411001014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d49c55e6dbf2f5a63e6d87ba320f32722bcf8cee40905516dcef234b9f8ea57. 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/ARF411200389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3eeecdfcf95b893339af930428694b8abe2b26be9a52f06317048394864cb6. 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/ARF411200711.