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 0x9606b651c34a5aa21cb8b816c8b164fda819d47806f5e4ebfba74a61bba95f1e. 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/fed6761b-dd7c-4c2b-a95a-8c08a9fc2311.json and https://artists.proofprofile.net/proofs/artist/fed6761b-dd7c-4c2b-a95a-8c08a9fc2311.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 0x9bdf5b8814763360aca99f9348ec5a9a32cfa619ffdc963d7ac4082b4da08f41. 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/QZS7J2490387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca9f0697c8c7bf54325a4534ad917d9d13c03e402f007d99df09d67c7e7c667. 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/QZS7J2484422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa637e4c6d7868df4db36f74433656333169039a075e4dd482e9adfa82a7e011e. 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/QZS7J2484323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9d8a51a98f74949106c95f4e848ebb757cf9b3efc847f64e62fd48be2efb4c. 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/QZS7J2406993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29dfd67e7b63738b04f39cb792e6111d3b80d9bcfbf282297324b16f88bfce1. 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/QM8DG2431284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3419f3127672143499dda5f63a045ecb46c9cc5aaddfb8d51d2618cd9965e8. 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/QM8DG2459818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc273d699474797c9c4564c1adf6469087f275012f3ebc0f7210aaab5ad6e25. 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/QZPLR2358884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1138fd747060e2ee5fee64abbfa58babf013867e549aceab9ff343c5e5eb61cf. 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/QZPLR2358887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990df9661a5a903270b66cf3eac14038ea41b0610bb7f0282642cb0756faa316. 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/QZPLR2358888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6065ec6a30f6c9bbb802ad2cdd464e1a36bc425669a694f8168a071eeab7f5. 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/QZMEQ2207550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc520bfb2615fd6d03ce576f76e62130f8b1c4a1a92d6da4f694d6f4317251ed4. 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/QZHN72254635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60eead49116535fb480f3fe589d795fbefa2bb60f8ad2357efc110cabbb3be6c. 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/QZFYY2262954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012f621126035b5c5320af06e520fc5bf7b4de93ec8f75b88f2e3d24ca591e8d. 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/QZHNA2462687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7f797ec3449e640302560e77c3e64718c15e2bb27f19d6d941dca58136ee4f. 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/QZS7J2435879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa4d8760d70ceede3103b3e2fe41a1071cfc46dec36754c8641e16982ab739d. 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/QZTLA2488273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b00bd96b69a6d6516f7156ccb583b6a6b8c6ba6a4501ed28c804d0a9921e7b. 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/QZFYY2484142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7d39b4beb71a79d1cc976c81f398b4b90e1053d0233a58009c2afbf2f03e36. 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/QZWFJ2365423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c6d0c062893d23299120f3c1a0bb2243b1141f3fc7a530e1d0c32fc18a411f. 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/QZWFF2327192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732c2362465b5cdbd7f73058e87c12ac6632237de062f9cd5d9fd0207745285e. 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/QZTBE2332605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae6296d3722c5d5a253f80bd2ba277308df877d0ce7ccdb4805cd1fb2c37bfe2. 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/QZTBA2310548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf238adce00b8b6ce39dd7adc9a784a6c2eecd6fa22d19fc884c193bb4ad8123. 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/QZTB52334584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644dda12a91650ea29f185a1a7187a50d2b75105202b7ed228e3c71253237bab. 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/QZTAZ2311665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8cc13c92e2fe7375701a6e1d85dec16e746ccc5a961f25ace171545c2c8998. 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/QZK6N2387146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76577f3e07fa635aedb32a108d5b6f9615487cb0f60b71f6b7b39948ce2481b. 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/QZK6L2347016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24efd00ca9a99dad2d2202639996289f56e010eba557e8b212b4e6de561a056c. 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/QZHNA2331022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214ae889b14f25ab1f406ca95e4b5782415a566ab55972b0f631d0fe64def27a. 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/QZHN82363618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cc5e7843d41bc9721a8c0952cc2533891b6495902a4cf5ea687b2bf834d230. 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/QZHN52343045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdd078d0399fd7f8a6f4850318abc0e7a1e818f38be3df3cb1c090c4bb8a4b3. 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/QZFZ72366015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e162ee905c0671ecb2afe8376c895a3ad9ac1c2e17beb68f2de0f53ad98729f. 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/QZFZ22358844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf4763dec7300e379b48bfb978e0887ddf1e9f1a2ce6f11424a1081df1e81e9. 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/QZTB62264847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc487dbeb6d0a42d3798e3fe5b1ad8447fe65d067c6262eec78328a8233eee443. 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/QZTAZ2292270.
CHANGELINE'S ADVENTURES IN THE LIMINAL SPACE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f3ddb5bfbb075d720946b7ac5de8be8a54a047ad77828ebc4a855f5ee01f8a6. 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/QZNWY2295661.