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 0x39cf546f57c5e0ff04305d00cdf638879fbd8e93a551e9b2805e1eee3e380381. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1dc19423-8f9c-4669-af9d-56001fa76e9c.json and https://artists.proofprofile.net/proofs/artist/1dc19423-8f9c-4669-af9d-56001fa76e9c.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 0x5ad7d9ce629a6e851708899be22ae43cac1c0ee21f4e875040d1f13bf3159fa8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNJZ2309129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa05ad91e319498e686e54af616417fb0f4f2b16cb773acce713d8cc282a881. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZW9K2335147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d0b6928fa3c382f1d952fb88a6ef570473c9bf92cf45f05eb2af5d17b50c38. 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/SE5752414711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bf49aa67cdefc94ad10722922a0b7a7c88036336d71605ab8028e7549d3c8e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE5752476032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5871dcf171944eeb21d3d4ce2e43ff60978a72523cc7f88b1686f101e9e8d85. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE5752476105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce736bf9700b4c635c6db54adc76f880dda2969ecefe05335bcf36d8092bb3ac. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE5752476087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd55f9cf0509fe5d91ed1a956c2b8d9883ccc60aeea8b6778e15bfd6fc3fab46. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE6HN2427053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b220c50bb4041732b49b520f838b6172a71b92e1eb21778f29202dbeec6b3a. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:47:32Z), 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/SE6HN2491988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4387f22bb3fe05a60c25c2ee6ded2cc7c532ce9225c32c9973346828a1b63abf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:35:34Z), 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/SE6QE2421395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d276733b0f0dc4511115465465a02e574820dec14cb7a50747d16261a6fede. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:23:58Z), 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/SE6HN2419740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe9ed06b4360257452616e6c2b523987ac39baddfc9f3b4255523083b0f93b8. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:49:15Z), 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/SE6I32455905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3e58a4fc199a23d9f3d1e4223d610ddb8cb04b56eebb739698f61a7207a58a. Chain 2 (Bitcoin): anchored in block 957665 (2026-07-12T06:13:49Z), 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/SE6I32455933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7eea54af4a6dc94a3802730b88665f0f475edabd97096980ab1b66ecec3c7b. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE6I32456134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1687e07a06cd6762d79087e635baa228e27e7f3b12caa14ae12f830f9ab3e19. 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/SE6I32455732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f413379a364eb5a740d0260217a38d33a8c2ca3ae47dd3abf4baa3056e88bc. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:10:12Z), 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/SE6I32455982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0709d9f70a160fa6144995644bbca1ee48615818da7427e6108c0d00760cc7a8. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/SE6SA2420566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca21b8cb81d650eea2c4d95770d62385cec55286b0b317ec3ea37941d6124687. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:03Z), 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/SE6SA2421631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09e71095d8e6f2f92b8f965cd14e52d168a45c0710389bdad32596362963f22. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/SE6SA2421757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd329c694660ad111afb2d7fae569f9e8cec356f4bd68dd0447717cde77c28c9c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:21:17Z), 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/SE6XW2417286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af3ba643e539c1ea93c07b912169df647db2c97349855a62a6e58949c733373. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/SE6XY2502134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee36da61e69548b7b741648ae221344fef9e204f2885e3a6ef97d2c914b27818. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:10:31Z), 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/SE6XY2555052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3f2ff99927d50ab1b52960015b3f462ff7f364aa1d942a9bc0166047c4d4a7. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/SE6XX2527733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeed3cdf15ce52d8ae43325e1e5732d63af80a1decbcde095e35595717b8cfbf2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6XX2527804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1a7640ec48e344723cf6188056ab077fdde19bdf52f74b17aafab50aee520d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE6XW2566531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92ec6dceacfb9406e8c95f4fc7bea71d17b0ac48086791f0677805e001d0087. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/SE6SA2591998.