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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 0xdce0bc2d76ca1169fc9cc4e6edf8a33de1aba4426629fee4083a59422ab292de. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e3506e5f-725b-4b27-b7bc-f32b3b1b96b6.json and https://artists.proofprofile.net/proofs/artist/e3506e5f-725b-4b27-b7bc-f32b3b1b96b6.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637eae38bc9307407b0e4659e2b7565a0f2e05ac075a089eb7becf5c1d3e9293. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZK6G2493782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e70fdb1f4a37bbd1aefb33e6055a92d464672b19d756278832be4b9d299b76. 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/QZK6N2428674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb5f1e1ff067ce7bf1a8fd378e5dd9e4bafcadd556f497e216a9005bca8180f6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZES62405913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb23b21d42843d620298cc5f7ca19fae4f6bda98a972fbeeacf3955ad898299. 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/QZFZ32441240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566091cc3ff9af8fd85f23b3cec04a28580e862f2323695678cd849dd30d5dcd. 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/QZWFH2322700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3440abc8860ed8e46b22778ddc6eebf3090004ccd27f2f145a77169489483c1f. 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/QZWFQ2318777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566091cc3ff9af8fd85f23b3cec04a28580e862f2323695678cd849dd30d5dcd. 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/QZWFH2322700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1217096efc67eaee4f413baa63816cba00046a293dca1607e5b4414a158c34. 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/QZTBC2357443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1217096efc67eaee4f413baa63816cba00046a293dca1607e5b4414a158c34. 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/QZTBC2357443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d530f8b65d7a07402aa49c0358def489a522bbcdf48b5fd229887e23890a0a9. 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/QZTAY2314551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d530f8b65d7a07402aa49c0358def489a522bbcdf48b5fd229887e23890a0a9. 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/QZTAY2314551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eea23a7d9ece606fb2f4196e0e9375ee10cdaf8f92c76f9ce19472d27a8fd5. 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/QZNWQ2334252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6009fbb8c119f2ce6f46194910f482d782f33c75e7d8dd4ca8cf2aed77939fea. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZK6N2362631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff3b36fa4e2fcf4752b2e10a21576049afb8c51905671ce6356d261bfa091ed. 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/QZHNA2313104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7abd1a3d75f732aba7aba01cfd626857fa50e41b37ad1b5547edd7a43e253a5. 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/QZES92330541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a33031d47cb980a546d94a808aeff58b4fde4bf35fdcd38e2ad831357a34b77. 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/QZFZ72365374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c9d5a91caa508b882db9ec1251ddf06d848c7fd60c9f67f9fc7ea7310e73fe. 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/QZTB42215396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc079a432fd2c8a102f9eaeb860c3ed1af3fe4da280e8da93aba0beb3f194c25. 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/QZTAW2227474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5cf63759291d508b70660df655c5f38f1afbb434154a883f689a92de372c7c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNWZ2239006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad091a7dd552f8011c1cf8a8f77ba0c97abf9faace28b0319633e3c838d2724. 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/QZNWR2292054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89a1db62942ad209d4c99c42f0388d993b7fc6432090f1622ea4ee96cb64325. 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/CH3132100680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfd4eb206a82c6b08817b739b351b0fc46537324bcb8ad57f454d926f7ce0a0. 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/QZHNC2250332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf383094462b78ffe10b3da37bf6d2850b6bd3223a4a3f08a320b765a85b13e3b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZES82236641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c8b0b6a2300748fa17d541df1a2024b20ef2f0f7fc40068cdd47b615d24fe5. 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/CH3132100284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba0c0f1aaf4854b5111c7f349dc50763a59f87e1a052f13f874dddcb9e4caf1. 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/QZNWW2063297.