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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78c5102c10305402c610cc11f1a89130acfa9821b4915561028452bf8aff57f. 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/f87ba1f3-9966-48dd-a212-c4d9c4d89f43.json and https://artists.proofprofile.net/proofs/artist/f87ba1f3-9966-48dd-a212-c4d9c4d89f43.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
John Digweed (Live in Montreal) - Continuous Mix 2
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab237ccb31ca4f93140b270c94c6453765e2b62fc25177473a9ef1da43854a8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBEPM1401091.
John Digweed (Live in Montreal) - Continuous Mix 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cde3f33d61655b058e379e4a35b4c4d2c2ad1dadd8f9db43c557e035b0f384. 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/GBEPM1401092.
John Digweed (Live in Montreal) - Continuous Mix 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c46b2e1ec69e430a14be396a7ed20d1d1ddf8331d08d6c7e585628ed32a38c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBEPM1401095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa4be51c7ce727861b3fabb3d192946be80823415fdcb6239562b5ca6036c4b. 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/DEU671500306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5914460b5c3f5b0ecdc692e4ca53bb82fbffca1b17333ad7c9445855062345b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBEPM1401068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aaaac95c626e9ef811b28aafe38fc00a00b1d53d008fa9efef9ad46f6b62ec3. 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/DE1AH2205301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89644b5c3ccba2cdd5616f4ef1bf97e37c0dc4ff7624b027280851fd5d80e81. 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/DE1AH2205302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddfac678d7630d841573bfb8870646af2e352d6ef5322b26c455fc4523df5f9f. 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/DE1AH2205303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b0555bf92c4558fad65b54bfcc7d73bf7394411e81eb05c23191566dab1dec. 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/DE1AH2205304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b2c365c38001a5df58594d8f54bf05f0b18e0d6a05896942a4dbcaebbb7e16. 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/DE1AH2205305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed86d321e4fac14726093dee729a6d92335e6bdd2ece3a5bb59db807b885abbe. 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/DE1AH2205308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dad07b5ad2086f809b367e84a69f238eb5b1eabf16d38fe69006250286aed7d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DE1AH2205307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8eb0843065b235df99568ab7c69e293252f95cb0168a5f4b27b851a8826ca6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:39:33Z), 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/DE1AH2205309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb139eab6668cee4ca433039a62f13219d1c8d25b3526bad0e6fed6ae754d541. 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/QMEU31912167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25431ce76d4f488662e00654159ee797880b5304995ca51d353f96b302ced343. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:29:16Z), 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/QMEU31912168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bdbcdef57a4efe544d31aa47de5151edafaaa7382cd6b15bd7ec056cffcf9d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMEU31912170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d24f0088c0ce8df7cc53f9da0f0ac86e7d79dd59bf993b6ea7bd8bf10abc98. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMEU31912171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5e90896ac106a148d52d52a7fe76ae4e45f51eb714e8729e696d1210d43d98. 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/QMEU31912172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4b79385d4250aa87217adbb4378d5141b584d07cb137745a15dd9d1dd8bfb3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMEU31912173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cee673dc7102a82f85e55d0746c85b836161f9e4eb4e7205b1d3556506bb5a7. Chain 2 (Bitcoin): anchored in block 957287 (2026-07-09T09:48:29Z), 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/QMEU31912174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1db0bb645de60b336372ef195e2c58e769728b0a213a9f8d2094c0ceecd0615. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QMEU31912175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37ea1516c8f681740166bc81e050a8a2a354ab080188138774da7810bb34d13. 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/DE1KY2402610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef31b6c11754a5dec9fae3a3e6972b45aa47462f60d58d10f731c8d7fc6ea2b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DE1AH2205315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5479f6c97486eed6dd855b360b0b67ea4057f3f70685d70f432afadf5883963e. 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/DE1AH2205314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dad07b5ad2086f809b367e84a69f238eb5b1eabf16d38fe69006250286aed7d. 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/DE1AH2205307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5e90896ac106a148d52d52a7fe76ae4e45f51eb714e8729e696d1210d43d98. 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/QMEU31912172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5479f6c97486eed6dd855b360b0b67ea4057f3f70685d70f432afadf5883963e. 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/DE1AH2205314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dad07b5ad2086f809b367e84a69f238eb5b1eabf16d38fe69006250286aed7d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DE1AH2205307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab237ccb31ca4f93140b270c94c6453765e2b62fc25177473a9ef1da43854a8. 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/GBEPM1401091.