Martin may refer to: Places Antarctica Martin Peninsula, Marie Byrd Land Point Martin, South Orkney Islands Europe Martin, Croatia, a village Martin, Slovakia, a city Martín del Río, Aragón, Sp
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 0x76b313ffcd8f159e50bb387bff3102bba9e5cfddf6625b618509cd241c462baa. 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/e26e7eec-5adc-4ee5-b337-aea0be4d52dd.json and https://artists.proofprofile.net/proofs/artist/e26e7eec-5adc-4ee5-b337-aea0be4d52dd.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 0x6fb914c5f84bb571dfbaa50966540553931f1d5b2242365f7aef473a1821a694. 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/MXF010100082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8b645d95f692ed04eb83f68bfd472d22d2fe38889f8e3db65142c4bfd0206b. 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/MXF010100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf70b75c40b37c8661461bd3d11341774c8a3abc18a29c0dddeb3bd8145a6f62. 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/MXF010100084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a64b280d35de99cedcb4bac3831677301a69b9712838975075ba5f871c1178. 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/MXF010100085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2b04c4a61ec0065a6deb51e4e3a9b4f886ccddc9c7550eb302a001d8760117. 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/MXF010100086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a9ebcab9b66d6e922fd360e0857a4dfe5d31b7715e778b66096bf382a9197e. 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/MXF010100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298f9f16255e6d98c712c20f2bdfed656c86fc4c6a6292383b863f203d2c21bd. 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/MXF010100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a40f6410b543aafce3bfb498fc03736940f5df492b14a03b36680c10b7984c3. 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/MXF010100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3c03c33c8e2c998b1b9ffc577f9303c72359ad42497b723d1684b6c44011b2. 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/MXF010100090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5071e4873346519daca147780f30243aba70e9bb2c5e8de26c619324e06c4ae. 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/MXF010100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805528888032eb23a77a64ee7ba798ea3c596fc0b442cc9fcef5db6a2e599fc0. 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/MXF019800886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71212274b8d43a1a1de1eb104d9f15e3e86dae0968ade47e4e2968a67fb352ef. 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/MXF019800891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f391606aa31429bbef527f65b2f901a6d6c2746ee66230bf87aced6061334a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:27:18Z), 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/MXF019801248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042bc8f0e9def7e5a7f096092beca2e5d5b0285d897b39e7e22d0d7165a1bd95. 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/MXF019900833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa3a86fcab1f55b02776290493e021bc369365bbc3375fdaf3de22e7d413e8a. 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/MXF019900834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x321031d8ca5749115c827a359649958a45c1399e2e7ee4258e2c3898d4761a91. 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/MXF019900836.