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 0xe68e40820cca5f5ab786d764e50dd0ada6086831a2c7fc2c66c097d2e4c55fc3. 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/9f0d916e-6ff0-46ba-9e8d-02e943762ad1.json and https://artists.proofprofile.net/proofs/artist/9f0d916e-6ff0-46ba-9e8d-02e943762ad1.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 0x7d502ae7621d36dcdc28272cb450978601e09165c755afefa03daf1d20d82101. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:44:51Z), 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/USJ3V1386863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bbc7a751716702c4e69474ac42e1f5c39919449a23eafe0f18c5a90156a804. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:29:47Z), 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/QZDA72096427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda2ad0783bb30c4f4f6ad1c9ede0bec8eb434081e5027e2b8ae6ffb528dc1de2. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZDA72096428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a49c0a0fa3a9fae536f03e3529cb6444a50c893e83b074411e9753722af975e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:59:39Z), 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/QZDA72096430.
Sing Your Heart Out (Popularity Contest Remix)
Vulnerability (Popularity Contest Remix)
#20 (Lichen) [Yorkshire Modular Society Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4bfb82de053a83f45e3ffc50eadd28fa0c0ccedcff8a2bf798bac1cce87731. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZHN62133510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ff719714da7cf3682c690c5af249092fabb201ea250a58be4a46fbcbca0812. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZHNA2135150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66e6c816e0eb883472fd775ac4590a675deca54ad0b319b1a3572de2df2646c. 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/QZHN82157512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa006bfc72ab03442dc67990ae1e0b6bb31ab7cd161d404e9864ba4a882f525fa. 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/QZHN82118199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dad53866f165f0dc710a40c8bbb186af8f8a108818c434db59f554904997c0. 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/QZHNA2135132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c2de5019499fb00f94cf9426abf96ed0cdfad13540d0476a1a6b3bd08f475f9. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:42:30Z), 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/QZHNA2135133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf18b9a6e7b68769d79ceecd11cba5a42b92b2cf5a35b1d2021f223bda036157. 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/QZHNA2135135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50356494fae58e99b2962e1c22487852c71560e98b12a50e1210a576181711d6. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:45:24Z), 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/QZHNA2135137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a39e515128ffd271c088155fc7044da52375fb09118b25e1250e067b79bdc7. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZHNA2135141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a9d026523ba6f90f8e15d0433ea06610042934d8817fac718b9d367f22bb23. 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/QZHNA2135145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ff719714da7cf3682c690c5af249092fabb201ea250a58be4a46fbcbca0812. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHNA2135150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160ad90532742cf71f9d929a53604112d0429fe821d7be20eb331e8b51c8598b. 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/QM24S2205489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90734353c99a36843ae408e74137fd8237cdd2b60407411fe9cd551573ed9d38. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:08:20Z), 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/QM24S2205715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3b78014ec986a797d70ee96fd573235ecd22133b46a0bb317d3b10ddda2755. 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/QM24S2205714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1cdbba6f5a21b07fb764f4d717a77273d9e1b1cdf8f1d81269f8df5feb640f. 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/QM24S2205713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b42ed12278d07149f512c071309da1aa8b12852f71ce466af9708b08fd826e. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:09:16Z), 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/QM24S2205712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae0620c6ef22c101a0d3bb778d2863c73ce7adadc915bcd65ffcba35077f2b7. 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/QM24S2500637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db3ca6d9c50446ff1c26d1ef42fdd0293e9aac977159996b7d94928b0e237df. 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/QM24S2500636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5aad8a869d0ac45c8ff5f705135da441a8844b158f7edc2181ba9aa48624c5. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:02:47Z), 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/QM24S2500639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5aa04ab57314096e7764dcfd819f25929c07547a69fd353f16ba2529d3f5b61. 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/QM24S2500638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7af84203118676fa64537d9402b59f9653b8f718fa153a242337c876a4ccbc. 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/QM24S2500697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5aad8a869d0ac45c8ff5f705135da441a8844b158f7edc2181ba9aa48624c5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QM24S2500639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae0620c6ef22c101a0d3bb778d2863c73ce7adadc915bcd65ffcba35077f2b7. 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/QM24S2500637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b19976f05f504d374f25172807ca3c5a8f510aa369ab395d6cc15d2f32c398. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:08:02Z), 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/QM24S2500696.