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 0xdafb77191d41fd2596cdeac877c6c9380a01da7f70bdf07548b71ecf7cfb89ad. 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/7e3a240a-bc73-478d-a3f5-415192502a1a.json and https://artists.proofprofile.net/proofs/artist/7e3a240a-bc73-478d-a3f5-415192502a1a.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 0xbc959146c6ce93272debab24e25a5cab9ac8564fdc516ebd87fc105c1e94f036. 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/TCAHY2458305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d39282830e3dcdfecdf2ec2775fa337b86cd99c9d238d2a682252f6c4b9c82. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/TCAHY2458318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec6690a9e1334c5e307d75f98ee634a00996a90e970f961e2b49faebbef13e1. 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/TCAHY2458323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7b2d69b677009a7c6badb1b8ac9b831b8145861b189d9d21c27ac588692fef. 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/TCAHY2458328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcaa058c3bb672badd80550cc7b13fa39d8d36bf55fb611be460746a970d7a0. 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/TCAHY2458333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2359985ad1deebfca45f550ff82bf5444f4f25180f418e79f3db2fb8f26f0b6. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:49:46Z), 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/TCAHY2458337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea215a50af8fd170764af36e11c7939ae11aef9a16452714c4e2d40a8e957ab. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAHY2458340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ea8594c1f83fa1f58eb3b5276f7077b6c48b05d6dbff234b223d8f190aa97c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:28:55Z), 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/TCAHY2458343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f3cd38b904479215b446799b60794cee43f63801904d18249dd9ebd8114ad0. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/TCAHY2458350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70079f78ad2b38a6bde42df432c1966244c75ec940851b5beac6ab831a7761ab. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:15:36Z), 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/TCAHY2458357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95adcc75a69d895346f61e95f49c0614e161a6d75aa5e6f52282d033506dea18. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/TCAHY2458366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49c8622d84a58717f2533a8bbb09f87491544780fdf30bf9c77cbf7dedd55ea. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TCAHY2458909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c66ab5c282cc386d20e2c923de680bd688687e43db5bfb24e959367a4b30a7. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/TCAHY2458381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fe7129193884b658a6ae3069973c04ed908db905e909a76eb5e22333045fe2. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:54:27Z), 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/TCAHY2458388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625ade1d98c9bfa0ebb7623d4f5a61fcf5cbd46a4e30434daf7bfc18f229cac7. 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/TCAIH2420535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a96059a2ca9b295cc698d198496286c4c6f9599d9060384ae4315fc71f42cee. 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/TCAII2420539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0f507cacce95033c9c94766216829d75ca4136fcb1d8e8dac8a6f35936b36a. 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/TCAII2420546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e52b5cb4938e4f85b50b5f94e971284ff22eecc9e7ccb53e60443f393f7312e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/TCAIH2420551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8532a84489de128fc3e6f1ab39bd428d8c4b09206a5f31a667530cb2e1b9cd. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/TCAII2420553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43702724d3016d07e48cf2c6a8a03893ea7876a626c71de3b78d2560704523b0. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QZNWS2464451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9497ecb6df3b995ce9bd129151afcf4799c4679a111f74b3837e7dda21e497. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAIJ2411365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f89fa298ee45bfbdb7ea00958c97499561fbb9000e7bfe2d386fa81e9e3cee5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAII2411373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2369798bebeaa3185562bc4eb00e78dbc33b7ebdf5bf2193b494d3c295e13a65. 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/TCAII2411383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957f249638f41633aa514bd813c3e5f1c68ec6cc782b8f572d60387c3e909473. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:58:16Z), 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/TCAIJ2411391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236d3cd4d0d7054d2eaf9119c98c83e7442729dee89ca7851e20c93b264bd49c. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/TCAII2411394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d07799366695019a947525d643818a8b95b76d5da2a3bed87cdc67c5ace87b9. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAII2411396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d15435ccf05b1d59c7c758352f05753f2961ab9dc7b585f48cbccf89a7f0a6f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAJA2422392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a42e88cc0b93996d59a90776e50ba9e410e2d9437989ff06082b6f501b4da2c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:38:43Z), 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/TCAJA2422395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85125bfe5d9d4892eab319d3abe21a74107d0f02e4e545abf97f78585ef7b573. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAIZ2422396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146261818c6c0a022241bead8cd109ccbdd47fee58abf66ac04d7af31a24397c. 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/TCAJB2422398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ec9eb6eb40e1edac04160f344b456ce7d57c9db3c413350cf4d38a4838d04f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAIZ2422405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76908ec3e3c55d3f6b297b844a3cfca0b5c935935cbd1bd41dfaa27e0801347. 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/TCAIZ2422470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee68c75bcfff16b96302c898d0b3f8152126e9ea1f367a681bc2e27dcf2f1cea. 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/TCAIZ2422583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d287b3f81318dc48ad3f5fd942be5f4e56bf2bd2767085a6c45a079cae3f81. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:10:35Z), 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/TCAIZ2422587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b0778fba527e53d127e65a0e5dd2ded6467a47494654f19ef3cfc1d75e589d. 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/TCAIZ2422598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d496b60ec00cca49d06b328e5b43673aa7a49fd293d15129c43fbb3c6082765. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCAJR2576633.