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 0x877e57b4243887f37cc6a0869fd76aa441609bb2261270ebc48176f64c6aa9d1. 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/c827e2f7-6fdd-4c5b-9023-e6f5980fd2ca.json and https://artists.proofprofile.net/proofs/artist/c827e2f7-6fdd-4c5b-9023-e6f5980fd2ca.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 0x0f9efeaa50dbce5f81d15b91aa3171b927c3f3af938331d721c77e3f965704c5. 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/TCABD1296040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfaabfca8931a7a2bcff0de86da41a629adb7183d9a9479a264d54484954300a. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCABD1296041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae05a6896e7509ee3286b37410ffb1abeb7091fb23a88db346f8682dde917994. 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/TCABD1296042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7f2a6278c3b4499f79185c5746bedf990c1eb37a6f2b4f20143173bb7545d2. 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/TCABD1296051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0405ddd3277d2e517d085d5258252579451eb08ebb7365f2c59f1b48ec72d3. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCABD1296056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4237bbfb57817b16c75320d4062e10a21d85d79ab75695bae47c858409876978. 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/QZ5FN1848229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf9ea8a194ed40ef64dca5bab75a3d8223eb1077af86d265c97387d91704e3e. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZHN31917668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f91044c2991af57722f15e8a3734191bf906f45cc57e4a17f7b44e06b752a95. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZHN31917669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a40fb964a1b480f85cf6fa2f93ace6c71fc7a0f111e07f2288756d3372a46f. 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/QZHN31917671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875500ee1dbf280178f599bacec38607fd4dc27a589a7ecfc7b21aad0a19c0cc. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZHN31917673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b44651176353b29e4ba1e333e7b8025bb79fb9490af0f5debca717158753c8c. 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/QZHN31917674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f22f5c20af69141a54bf448ae621cb40fe1cfb2cb65fdd704ed6fe277e8b393. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFZ72003479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1846b0ad9a50cada064bc41cdecd7bb349767b631b211c3083cdf2bf924f4818. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFZ72003480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2083b2afac1d4271c30c408fb33d0e60a3c303811d57f4845f24300b4f8b8d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFZ72003481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676b6015b8233d41bd4bfe5051fa6c42cae12faba9f6ccd41d49abcaa43ddc21. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFZ72003482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99284f7cd695f18abc8571ec70e150c21854ec32a0a26ccd08a80480ad689caf. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZFZ72003483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c0c3f8d67054bc26fde6da663d1475ab302e0667123261dcb560761232cbe0. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/QZFZ72003484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a5c559c328468f06607112d587640a6577781bab1ef6fde19d5a8638d76076. 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/QZNWX2044698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491fbb92e954332c211a48fb228a6ba310c5b38ff4dad51493b04805c732123c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZNWQ2160747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e206e2e0716c5bdf21e3314b4604f7ea3f7743e8d22c8b7da1171d939259bb5. 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/QZNWQ2160748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcf70498a65a30442ce4f49523f768170b7842c4e98fd934fc5c0e4f19aec9f. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZNWQ2160749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b7c03b1004009d6e736579148f554667df85f099d9469ae7d0764f9ae65812a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZNWQ2160750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e34348c3da79aee9706f7f950bd6df2b87e1e0b0c764801adf99f869ed6e58e. 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/QM4TW2420002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4755b1ed3cb4c13ebcd652b5c5ecb18431eff76323c738a40a6009a1df0d39. 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/QM4TW2420000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd403385d1bffc7067defc0ebd80c7c5c3eaac32b9d05ab3ccfbd7d0edd6149. 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/QM4TW2420003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd281e2e2310cc6efbd620bd43100b3295b0ab163f13ac20779527d378cdf0f75. 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/QM4TW2420004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a2d8c7cf053f570bf340308e6bd82938d4e35afd7381be6b0657ce270a7a09. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM4TW2420005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7c664eba9689da15489832d5b34e77aad62b2a4f36f5d57448d48f50f73398. 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/QM4TW2420006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe307742faf37177beafff9e054f9ef90b58da30e98672257c91ae468d8f893ee. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QM4TW2420007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ad1c99477c01ab1b691ec2f8e7db85c3b8273ac4a9667bfbf3b3cfa3e126d3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM4TW2420008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619f53c9a08e1c2b2b8057116051d698dc1bd9b50f0042c4d9d25f725449eb6e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QM4TW2420009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75edc3394404c7fe9e4fbb17386296c34f4d766d808dc2d37f01d914fd6746ce. 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/QMDA72466720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13741ebb8939b4f218b5c6eb730a92fba833e962af0017a45241d4642496809. 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/QMDA72466721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf577e8c7808b26fcaf3568c5e2e8772372ac7b6fad7ade2f4eade56efd6f2495. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/QMDA72466724.
Everything She Wants (feat. Twin Shadow) - Kontravoid Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb97d3c2bae38595d161eb41cc23c4f8459b5ed697df8c7af265c750eef2baf8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CADE72400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97370abd6e4900fd28c3c02013b67ece559b94bd13e93b69eece7dedbf3d769. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEYOK2014731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56558414f2960016227f9ad2bf4d8fca0444933164410577788108500643c099. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/AUBEC2335489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bcd36c6f62fdcca0b6e073c72c31086e8f2eda7b33750f8834c7524a62e4c6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/US57M2022201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900cdccd4378eccbb2bb50ca820531a1ac86ce04d6da3d59a951a441f17a40a1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM82361970.