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 0x17c3a373c64b2035e0dba86a09b966689df50c29be2eebfa0ac44c7cba1a9bdb. 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/d49bbb00-2beb-4d17-ae52-1774dca9399a.json and https://artists.proofprofile.net/proofs/artist/d49bbb00-2beb-4d17-ae52-1774dca9399a.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 0x1576b3c3401c42dcae92a91b82d2546de35d8febfcf93850346c8ca3dc1ae12d. 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/USL4Q1765649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d43810766e8e1dc2ddc664dc51f2f62eb177d929987b76df0ca8ba0396ebd44. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USDY41899231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847b28934984f59b2c608e17b9a7a91864f21c4c532a75460f6a673ebebfea9d. 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/USDY41899232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546e63877b5bb40bbc171fa12c4d4f86cd960015d20402aef33ddf921d7f8700. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:42:19Z), 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/USHM21828753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed82e4a079f22d913e449d27bd4e6d30bc7d4445026b44424ee633d5ed56ebf. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USHM21858288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257da39348d14e1acbf89429428744072d56948cd241e88479f979580eb5bb80. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USHM91894612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61a08fc3ef216f0970c13b4e1c4cdd2d1f96229766f06920527bd2250a5baa9. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:05:04Z), 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/USL4Q1848513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd94969bf1f00a8945074add7181f8827ba01f700ab18b2ed728b1808e88b5f. 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/USL4R1822811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1bbff7c848aa87e6bce8baa5a117ad296bbff804198f5a0e304dba2e93672b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USL4R1822812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf6af5e3efb95b4e1ad7795cbc41453a6cf73bdaa11eb56d54f4f87e0788c9d. 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/USCGJ2007332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae940fb06cd9e509ac58875a1907b83d635524fc4c9e9c570045cb23032f8e94. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN32037052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314618870c1f8b5301da657f1fdbf6f67fc21694e17c078281e8d077ef14bcbc. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:30:48Z), 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/QZHN82119784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d9ae77a2209e9634885e93bc0eed0cc504b7e91f8779bde364a5b6c166b42d9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:57:21Z), 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/QZMEP2179719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066dd0bf47f58a35f4f6388733c7724e9479353e0aa81a51f50fb2b17cb3de60. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZTAT2116140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f7d4c9d4229024a8fcc2c1b3593e7326f6627593d74ba027cb0cca73fadb6d. 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/QZFZ62211693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ae456d75b9f49ce6e95f3ab2c3e36f11ab36302293a3343f4f397e4567422e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USLD91737777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8201ca469aa7c57abedbc6d1111c2c7720aba3165b2e622bd40c44d4a8258135. 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/USLD91738231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b809656ac5d07617d697b87ff2301da8ee56b9777e6152b394e2c939c97de3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZPLR2291510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a9db51f51a80d169ae98192c9125d7ca1673e147b2310c29d79e3ff5186cd2. 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/QZK6N2381787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7e0176f2fd9a5048f60764405c02134dcbbc496eee4971ea372b1f19544a1d. 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/QZK6K2370125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a875c287ccc35fd4cd08f5a1379bee9f2770038a3a85a4a839b087c6eaa8db. 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/QZNWY2386752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5535197742ca2c961eb8d7099b6c5d1c512deb2c8cd573a5b344e4e2a0e2f679. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZTAS2328486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca42466234495e1be92ea2be6b1be6c9854f2c96176d754591213ed50ccb791f. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:46:01Z), 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/QZTAZ2390624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218bfc75202d9e059cf8d62462f238e0388fc50fe832f5d4798327fa4199ae1c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:20:33Z), 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/QZFZ42496654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789c19e934cb17ca7f2956ded5408f2c5ee7123ad39537c90becec7544e7c275. 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/QZES82473037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8553e8831bb71255c3cc769e4c5364b15cc94b6a7928d77f21bf579f2963c529. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZHN72466264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2078c0b69573e00f8f5591a87b5faf3ef54aaaff3987817710de1f40a6e83464. 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/QZQAY2424815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe04da2516ba1cee6b6b46815f4d7e059c5e81f9d6ed5f358c9cb1dd99b7fe675. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZZ792411896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4676f27929aa95c654e9e860b18a8b706dcde528a043c1f3609620c132805e6c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZNMU2519719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ab3490569537f7a8b5cc4bb8b68924ccea99c1fe4d2ecc74e2c3fc446f580c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNMW2542618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3fa4d0f7f22f1aa2d1cc288eb36f434703da0b00f51504f12e21ff9f7b49a3. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:58:21Z), 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/TCAHO2325238.