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 0x825220fd861a751822a09fa6c35fdc280e39ca4d55c6875af5598f90a525c08d. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2fb5ee5-fb02-49ef-aee6-ae5848103158.json and https://artists.proofprofile.net/proofs/artist/b2fb5ee5-fb02-49ef-aee6-ae5848103158.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 0xe536d351d1466d3e6ab24af688625cedc53d3d717936b6563ac3ae0d287308be. 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/QZTAS2177252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653bf55dad42106be203be97382a8143ca14e21f4fc4f2c0f6bd83ca34b91127. 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/QZFZ72249264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0d1c574e4f2c24da9992bb56ee141ed34159f986b2f92f60e3a37d555a5bd3. 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/QZFZ32238503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b97d35afe1b055ac65546ca71b0aaded6e99e8e7d7a7cc6deb6605e3793dc58. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZDA52283126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb273554dca882dad10a0256ad3b271765230afe0e90e175944a1fb00345add10. 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/QZDA52283127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86e945b5d1564da722767ba75f131079908bda5ce6633c1b3c6017e61ece198. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/QZDA52283128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c98320b18236b7c3f2504e100e2836610c98c65bd40dd6eafaa7dab4639c3f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZDA52283129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddf6dfcf771156723411c59c3b072aabf0ef4c7fd2293f989a55b36b6faa6f7. 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/QZDA52283130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdfa6f4e713a2588dcc496daf2d0a0fcf914dd9eec17c69a6c7f354631625aa. 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/QZFZ62270517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd478697bb7e3c84ecc4e4bdf1c552b4b87fcd0fd6cbd04a167430df6ee0dec4. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZDA52283131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fee186a7c467ad9361e85470d1866b4d9b3ec183b3b26c3e6f249f2896af81. 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/QZK6G2343529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc69f9c09c147d1e462de78fc56ab11cb098080648636c1b47c28e519d4f3f0. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USANG2290250.
Minnesota Waltz - The Wild Honey Pie Buzzsession
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcaf29253193c89c8666c4e55f2d788c0a575e3e89363e8f7e4aa8869cafd36. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/USANG2290254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a796b033ac71387305dddd234c2c326f026fae2b0dbfc7a3328e72d3d0b858. 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/QZFZ32380295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653bf55dad42106be203be97382a8143ca14e21f4fc4f2c0f6bd83ca34b91127. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ72249264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdfa6f4e713a2588dcc496daf2d0a0fcf914dd9eec17c69a6c7f354631625aa. Chain 2 (Bitcoin): anchored in block 957249 (2026-07-09T02:31:37Z), 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/QZFZ62270517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdfa6f4e713a2588dcc496daf2d0a0fcf914dd9eec17c69a6c7f354631625aa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ62270517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0d1c574e4f2c24da9992bb56ee141ed34159f986b2f92f60e3a37d555a5bd3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ32238503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7ca19fa8b8190fb710fa00a88e3572da9b93a86546be298b5662b78322e8ab. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZMEN2089603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359affbeac18192b6c69802a5b88ebe5b9d038dbd0664d89c3d9a356bfc71069. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZK6Q2092597.