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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347eafbfa9900da23dcc12ccc1f4df1cd25002b0190c3cf6dd207f478a3afe96. 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/bee4e2f7-473b-4b71-8d78-c02bf6b55123.json and https://artists.proofprofile.net/proofs/artist/bee4e2f7-473b-4b71-8d78-c02bf6b55123.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c460067edf623e3e7156646c692a51da0a29772e13650ab65be4ae3e11ce3a. 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/UST8K1665410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0e5df9b3cdc379bdf426dce426321433ae512de100a09bc5fe232ac3e13465. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/UST8K1790748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03289ba9f97635c2e1aef2b583864c0bf013d77ed96c5187a43f9a87df4e8f5. 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/QZDA61927979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31a5ebaf0df77f9f82516d68342aae4005efa07e497b85acd4464a0e1961b5c. 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/QZFYW2072020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797e67dc0bedeca3e5918771ea309e3bc15c0794ddbdf94626c7c2c448d02ed9. 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/QZES62039329.
A Helpless Romantics Perspective on Pandemics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e6923a5058df5d28024ff9e8406a42cbbbff6d1e0c92bf5bb5ea4334ec6e94. 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/QZHNB2073215.
Art Girl (She Wants to Move Right Out to Asia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92b7936932ac16b1d5945d34662fe4927a9890bf8fd609c26dca601a8165915. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFYX2132137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32d3368c5f4059dd0bc4f2af96479907eeeb43f9bca3e9597383c1212b0702f. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZFYZ2180459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb425f95ece52802d90f72a5b710aafb480478cc556b17c6767500181f878509. 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/QZDA52163684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b8260d766f5e6d54800872fb264e447284ca9fbf3e475f00a4ff4f4e786628. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHN32135124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875c3adc8afbb2ecb0537de1492c52055d4e0208362fc821e59f969948ea0b0f. 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/QZK6H2199866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7bac11eacad18b7156f460e59584e7e329ae82f5d906304d4bc1511e4400919. 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/QZNWR2158101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dc36f069b25c867c75e58deff2e35bf74eb754edf55e1b1729f092ff5069cc. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNWW2138426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2e383b0c35b0d65c9a8e3b39a33eedd8fa9ac17eb10e4aa65dc70dd9458863. 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/QZFZ42258964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8314e26ec81dd9295fb85a7ced97611203cc6e3e81b0f835ed2e2298b965bea2. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZK6Q2257625.
If Loving You Is Wrong (I'm Paying For It)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ff20b7ce6e8b09ecf390dfa0c74058659ebcd8d2bd834b0e4ec4700bca6e0f. 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/QZMEM2236172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ba17226679fa44a73b5755f371ac5868355642369e501267bb7b602a7cffde. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNWU2259440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0e0c9479a6ac6b51167ccd2f2c83fb4aeda1cf46db0e578a728a334f9e8dec. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTAU2275033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b922805fa20e3f34284af167f8e57a7f5cb63c9612aea804d1b23caafbf651f. 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/QZTB22238880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af36c76ca120c8dcf748853342d24f8d6979c84263602406771d70bdb2b6c6a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZES62386599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed90caf4f3ab443d5fd9e6a4913d3db9f594d175ff3ff0063591e710273a309b. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZHN92338155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b2458bd982681e0bbc5e7717be713910daaf22434dd77a11eb35792cbaabae. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6F2397591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc14f3f83754245585c9c4dac858c430a7f557163e65f50058d1e7d1a6079b00. 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/QZTB72385786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b2458bd982681e0bbc5e7717be713910daaf22434dd77a11eb35792cbaabae. 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/QZK6F2397591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480d7feabdf6a64b9a04b08b345c29519563e5d9a78e88807a53b4f021c6a923. 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/QZHN32152057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103c018099f4e3add970c70c76ae3fa252c99e747f183938711fec0f74b71991. 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/QZES92255317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0e0c9479a6ac6b51167ccd2f2c83fb4aeda1cf46db0e578a728a334f9e8dec. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTAU2275033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc14f3f83754245585c9c4dac858c430a7f557163e65f50058d1e7d1a6079b00. 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/QZTB72385786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac1ff9b21f3b606a97cd30ed4b5faa076d9483debb41bc4f8cf2ca41c8d7cac. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/QZHN62015180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a39f80c5649fe11f46f8a143445d25036f896a145830d77b2a6d1f5c534108. 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/QZFYZ2441211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6242a248d710de615221ec9e36532b820a32d75cd031195964695194c09eb2a4. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZPLS2421026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8485b3c662a1838932e31294087a0fbfb59851dbb1ac32701bc1020717d6a5e. 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/QZTAS2466101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd309f3cbd9525a3abe71ec89ac091624e26f860a209366465a6160ca6fe1397b. 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/QZTBC2483667.