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 0x434c784daa228c277950c52679b87f292218c85f2a8523c70fb10daba08560be. 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/62569ef6-66d1-4eb7-8c21-048b66cd82c2.json and https://artists.proofprofile.net/proofs/artist/62569ef6-66d1-4eb7-8c21-048b66cd82c2.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 0x7e0bb7b03f655d266c857c297ef2562546950c84e47c6831ded24d976fe84af6. 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/LVF431400272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafee3a783f61bca52e5892e863595004ea3e7e5e27fe44e645c92a546c1a83f1. 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/LVF431400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508133c4e63f3ef61d59a0d612c9dec8413ff94f7868bd2d6708c45cc6f6a72b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/LVF431400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc4a0a47ecf93acbc2f396c3172d27163a991ca63418916c66166447195a1cf. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/LVF431400940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b83b877d18004b3c844783a539ea53a2db3fef77dc8edbcacb6973410f0ebf1. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/LVF431400289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789417c208a6c85ffd4f3659ea04bfff502f4610eed90642a65a5c3e701e0adf. 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/LVF431400306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb17b8777cf4971c0664cab2785fe81904539bf45e6050d77b62ac1882aac737. 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/LVF431400582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc779de7d1c600a75305ce5d1f9e34e7ad386a46389079962d2c7dbaf47a95212. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/LVF431400563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60683495be67827db30cc005a770ef3d44b2dbbcb5ca8b476db77b8023d94e28. 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/LVF431400608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36729cda38924f97a658bbcfc8e39f7649358c0be449c167e5a891655723a6cb. 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/LVF431401126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1606161cb53a131886b962d40aed13d25bbc34fabb79261e15807f86d4516ffa. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZGWX2118636.
Drošais ceļš - Pālis pie stūres nav brālis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105e2e7526f5df2478ce4c48bbd3f5eebde82a7d910ebb2f0ea8a446d212927a. 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/LVL152201230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a15672d538f5cf39dedf8b3ae101931d4537d70e47b189a82322326ae45f5ba. 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/QMFMG1416864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df7c2aa8011594aa20accbf4b2643fa760033f499332862b79a7ae7e794a4bd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/LVL151602776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e063c560992c24ec6b1310bb8e2d7fb5a8616acacd6aee3e5c63f326b68071. 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/LVL152501309.