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 0x692a8b28a57536f8907e81979f0a5afb992b1e1b8b2c56b36be7edf0d6c3d374. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a49c4be5-5e0c-48a0-9d09-ad0c507f30e8.json and https://artists.proofprofile.net/proofs/artist/a49c4be5-5e0c-48a0-9d09-ad0c507f30e8.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 0x432019b24d89c0d6aed339daab969ea88a8aec0f0d76c871f3af76425bbff325. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZTB22552801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935f0ff60be52aa1d6d881a98ebea8271b578cfb8851f330753ced1f91ae6eed. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:12:04Z), 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/QZTB22552802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a31bf28eb42b9b7adb520d0c55da9551a9fbf635f3d2c360d5c55a0d59960bd. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:01:29Z), 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/QZTB22552803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5062cc7e49891e8505342f34eaeaddfd0ad49dee20f3e0ddea79fe7ca71f3035. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/QZTB22552804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f4c2ce5deab8cab139d9f0363941f469b9e5b9c92ab4b74027d2fcdba5c84e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZTB22552805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacedeb2a3e5ac58099a4be24f9962ea3638f0b05473b8394a0532a73ae2fb95. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTB22552806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51db099399074872c569f7571cc976aaf329e982ce8f27b110778cf0fff46c75. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:47:22Z), 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/QZTB22552808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aec48f6c08a8a55182be40b2ee7b56b9964decab0672a5d63cc6c6cab2ffaf8. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTB22552809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fc91612a3896c4b685b04544220a0fbcdc995842eef416d834877e4b8b6f74. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:13:48Z), 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/QZTB22552810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51b8d32da67e7c7c7467de6e3adf67b0e2d024d8a216df0d062a0377b75db04. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:21:20Z), 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/QZTB22552811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf57153782154b5e3bb5010685d5c50b40030e6fc8fa367a02a6b9bf913170fe. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:30:43Z), 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/QZTB22552813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1eeb96f5d072de319d68c9008d39eff0577a368f9fc0d5564056cc39881620. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:05:16Z), 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/QZTAW2363251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b748bddcf4b43c3ae9d922d8084aa7ce194af296012df71359a923084182e3. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZTAW2363254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2bdeb8f4851865d2916b3e4dc9e09b8e34a33c91fc7ed268c9240edf26c452. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAIB2465631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4809378a1f9132c4633f5055ee8e9bc4ffa25eb9e5ae29b4daa7e1a2d8efc2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIB2465634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9b88f768dcfc0bb1af0ecea2714ba45a99f403fc0b64d92c9b3d23d9543664. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/TCAIB2465639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1bf182852444dce1135f5ca25fe3fb63097790137377b122ccd9428509b065. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIB2465642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d41fab80200bb9012e3b49ec610681e5b9a72ce5e35af3c0857b830ad3ba3a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIB2465655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180508957b837fd0546032ba4097a0067967b2fdad442e55ab85fc692a585f02. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T07:55:01Z), 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/TCAIB2465660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b157bfe3f80e08b63062edad3b2c5e213ba4548d9cf85c2b7ca40afa7ca296. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAIB2465669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ebf9b4860087650aaf9eb646d2c03930d88fd2a20208d1cd8d40c9cd50a804. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/TCAIB2465671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0405fa234b83ba113f223a448cd095c83b4a3aaa74c5d8d094605d481c6e8cb2. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/TCAIB2465675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686951c6add6115e6d63fc7c68a94088a6f9b5302dc5cf0d4c476d3713bbd6c9. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTAW2366324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1481726dfa4f525811e07494c70bee9221206dbee480566269aede265a3a18a. 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/QZTAW2366327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfcdda24e8036b6802d5ea835dd2c2fffdba5bb97bb1e6fe46b821554dc1124c. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZTAW2366328.