thumb|upright=1.5|Various kinds of mirages in one location taken over the course of six minutes, not shown in chronological order. A mirage is a naturally occurring optical phenomenon in which light r
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 0x344abdfb641ae9c7bd6d7bf9d855f528e1e1913e391d5c1b943c2a07c98a7cc5. 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/4c475313-0624-4cd9-ad7b-3f243028e6a7.json and https://artists.proofprofile.net/proofs/artist/4c475313-0624-4cd9-ad7b-3f243028e6a7.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 0x8ab58669c20401e823fa8d24511a296f0af3764e4a6c8860713c54510e37d462. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/QZTBA2396620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025f30cff49734e55d4bba332d922620ee888e079dc818647d54a72942a9dd68. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFQ2356721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0847bd9ac329feed2f8b13841c201d2a88ff8ac81abaf71543a162757057770d. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:28:18Z), 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/QZDA82437865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7c62da8b7dbf98dc7f891ec8f2d1b9265d4a16785e7720a531332e25e9fdd3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZNWT2420440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf11739ca179940921ecfcf6795cfbe6d982487e1fc7816b3612c21e9c94ec76. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN92453949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed8585de83b95414c99351ca888033f15bb2e70fb35846bc11ad320c7f4fdfe. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZNWT2420445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55d9209f4d12cd6d24d486d63a5c811d0243b2db023f75360469fa95d3aaee9. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZZ7V2460209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fffa2d1d60474cceb85901c338a5f61ac3a22015bf58b847a988c1c6402560a. 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/QZFZ62572986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf577ff8973e2547738726aa55112f46d26151dd7ac7bb95ec624dcb38218c4f. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZFZ62572987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416407d7213f78b5a3abd4e616eb432eb58cc5774ebd240925700b7a41a3e109. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZFZ62572988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ea2d43c15dc574a2da80318f1f8aa2006fe7d079d75bfcc66b1e4f13a42439. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZFZ62572989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e8e94500bfb69324adfe5ceacf5c210690ec5b0a580d7353f5a6cc2dfebe41. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZFZ62572992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4152a70ff4d1f3283c5745694e9dc13a2f7dfc3e9e830e4c3a5fa4b53da247f3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZK6J2562730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd40eea099e2440e00f9a957b08a652411bdddf75ad3ac5e03e1b4b7d96df02. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZK6J2562735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27429ea776cd70c4b9c77d0564e8506994f7fa10626484bc27c095eb8a29a474. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/NLCK42509437.