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 0x6db34ec91972d35e29a59e0653c92fad5faac3b611368edf9637d040362c5103. 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/b6f12118-8ada-43f9-a6fd-03c35aa0b878.json and https://artists.proofprofile.net/proofs/artist/b6f12118-8ada-43f9-a6fd-03c35aa0b878.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 0xb424cbf80766e9509dea6fa6a0812b4a8f17e76a52ae1dfce9129adf4d2c293f. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHN32089418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a738faf33be0559fdecef1241433f2ad694151b0bc1ac9608a34c17a9bee6ba. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHN32089419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268564c0f0971cfd89fc2f0f25e731129932f94c4f2321f8f042fadff0a48ddc. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHN32089420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e88f2880912d82f43b455801ceb393936f2c4bb3c812418e453cf1038d531a. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZHN32089422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce871dcbc3c3b7f7cb8c2c14eecef054ecdcfe6551fb9f06b88cd2f696916ee. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:09:35Z), 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/QZHN32089423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88413d2047c5a78555c7aadc0fcd32ba869f48c70068f8a376cf66d776c4e37b. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:26:49Z), 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/QZHN32089424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1547bdb5b04e185d47f190f70d409e6fc144cc7c0a9b1e912ff710cdfdb94209. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:25:47Z), 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/QZMEP2121475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaddb03d0c594ab790442f66ec664af6c20952b2e9c61aa72ac6e7f98e843c3b. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:47:19Z), 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/QZMEP2121476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb5119d36f69e4255f8b5027673177c61fa73bb8a0d2a63e1cad709cd1f5305. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZMEP2121482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cca2824dded9201409915eb733c9408a82ae24f395eb29e28c11235d3657344. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZHN62287445.
Leisure Skills (Weathervane Open Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ac0a1e34f2a5e32eaa0f050c0054141c5739e09213020afc7bb7934a7dcf0c. 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/QZ5FN2465241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eee5c76140dc42399db5f53b66d2bccdef0193ed18513d1d3305d00e024c5e1. 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/QZ5FN2465248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59984c147ba9aebd733b1c9fa251b6cd4297b5d314de35b1aae007ab98a8814d. 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/QZ5FN2465249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf2e4418fa792aaf9486b0e02c87b47dd34f8c58a0faff4a44d5c6f39afcd7a. 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/QZ5FN2465250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb171abe55b74a5f6fd8f5b21e630f1ac25b16f93d8b015ca59f8d40f4a15d753. 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/QZ5FN2465252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb372d726c4ba59ea12cee5550563ae8d3e1317f4c63bba54dfcf19a15862584. 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/QZ5FN2465253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82797fa45f733ee3a3273c2d7e90425d63bbf3c55a96f653e1247e11b8ecfd40. 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/QZ5FN2465254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe29fbea12d43e6dd14360ff67ef618748e9c86f8f480429d471a3ed5bd42ea6. 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/QZ5FN2465246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5097613718679a378269a3411d7404b1949822b751541775dd799dda11b3e0a. 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/QZ5FN2465255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceaac134bb8adf6ad5a87a00eefb9626cc9fb23db74c9fa78ede025b7bcec036. 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/QZ5FN2465256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56dd5ea08c877644152fbc59d2929c8dcb03ec637013aebf3d7b655d267811a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:44:40Z), 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/QZZ8A2522691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e79928894a8aba5ae5d539924fa604914adfe874e34a088f61b104d1131600. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:41:03Z), 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/QZZ8A2522693.