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 0x30c54459843346dd0e5253b339749171a784eea4614cefb5646555949b25ab68. 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/79ac0806-a7d5-4ad0-8c69-7275f608b865.json and https://artists.proofprofile.net/proofs/artist/79ac0806-a7d5-4ad0-8c69-7275f608b865.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 0xc576a0dfc63365de59f8d8a833dfdfb7678344c7a6faf8541ea4aabcda375388. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/QZHNA2138068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3904d2b1c6e56f0ae0dfb90021711b0ddc02e23c407187b79c2681d07b4fee3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNWU2197439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4e2a064ccb68d96d2be8a104fe69f2c9b19aa4e8f1d2955fd02dc0e31a7117. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZFZ22201338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a057267c6d44cf5141e5c3e14cf0d0cdfc8ff49693f863c345d5fc2aae8ec2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFZ32229979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326a4ad66fac708d644d153beaef1858ab2121e152812aa11012d48b29aad171. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:41:29Z), 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/QZFZ32229985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae50fa0fd8cc693ec52219ddf94378ccea81881df086ec643e7cc37c98de7ef. 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/QZFZ32229986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x085933e5d5e7e13d8f2f46afd1f1e8b0964e6f1ee13ddf69f583910c4985e92e. 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/QZMEN2126600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186d0ab9d8488984d2d9fdad94125e8ae8f8019dd9f229d04e298a7a76e9ea69. 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/QZK6K2148376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872ec4cb4b2fe5ac6787e5adfeef2e5797745d280477c40a7a8fb7a1abab5965. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZHN82243894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6778285b691f7f2134503619cd2fa69fd142c0418e41c782f6ce9176bfed2bda. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZDA62336988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef1952be01d2ffcd749a3efa7ae4bfe63fd60455e04cb4d496c3e4af1446b51. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDA62336989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e12f70253fa3d52d604f177c82f3571b336ffc1412eca0b9867e6e1cdd6f4e2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZFYZ2364563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa713c9e95d3b13dc373d8ff3549179fa4338b89901c78a80256d577b867270c3. 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/QZDA62336991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b12b70bb2ed3684f14832dc71bed2f6ef2f897cce07848b4925c0b5ca988f2c. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:07:54Z), 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/QZDA62336992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe215ac74af4931c97d50cb3f1dd1a150e3ebf493dc4181bb5511a9cfd4e6ec. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZDA62336993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8c30a1b861767b41be42479b44592cb3a5a0ade01089133eec5f9154d8395d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZDA62336994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d78d13557fbd2814d818a5e493216c90ed9687ea0f534ef1813fb8aa6babc2. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZDA62336995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f85d0a77708279f19236ca4b8b566317684dbf6314396050abe26618d3b9bb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZDA62336996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97efcd90bb2c5bc14e6f1edd28f08619aa370489b859e843ab1d9eb9a2393ef. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZDA62336997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ceb5ee786c29fea2f075f7828cdd796dd2a63abd8849a29a09b3b1a41720cf2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZDA62336998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae483b5698b4fea67b9cacaa7fa62a647e21d375f2a4f9c92990c9d99e062a8. 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/USUYG1444189.