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 0xe50787fa7923ba12e7a232b81b4283014602aae72eac66e2eaf0dccbee313dff. 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/b9ff6a83-fd74-4386-b46d-c71073d99f5d.json and https://artists.proofprofile.net/proofs/artist/b9ff6a83-fd74-4386-b46d-c71073d99f5d.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 0xd88e494fa0c2f686d7dcb1831b46cee4151509b4220c21697b91cf3d379abd17. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FR59R1801468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d952c6a03afbf7b21b3df4e1a6ea16870fc0554935e5a7bebba51c32e550ce5. 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/FR59R1801469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51db04ec287121a64728f8ce16abeb4b234844493cb961d03912e22e2bcce029. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FR59R1801471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812d03e557389d9b7a50d1f06841e721f4e61f4d867ce726a87033823b385492. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/NLCK41045911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd37eb864aa96ee743dbc9140a67d9ec185a7eaab898342bae9cd291d0483a9. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/NLCK41045912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50fdd70ec1e82a8ef46ad26b54d78b5bb56c329bb7b4ecf074c507c266ebc91. 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/NLCK41049595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50df5802d75d72fe288a5c45c78c6b8e68816118eb17350ac8be0cef8771fbd7. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:16:45Z), 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/NLCK41049596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfaefab7f96c1c806c583bbcfe439960b6c1820dc73f9c1c9e9d897088425a63. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCADH1705365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d3cb649ee306627cd5f84064873fd811b55c36daadc1cbd92de6135430e43e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCADH1705369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbffa32a1d09677c5709c0fbd479f516ab36d7dbd74e67d75f129dd2741565e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADH1705370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe207fb143c90e1dfd79946f0aa58aea687348ea888b7420377673f4437128c4b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLCK41052237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef61ad78ab52d1611c5b989215a926d9901725bb50727119e1d79252e82a553a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLCK41052238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49b045a858079e65a4716ec7a17b5d3772540a871897927cd6ffc5609ec1238. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCADH1745422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1246286180888764784a5c5fa84abd5df57e5433272a8ca5dc9a38e069801c. 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/TCADK1894789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2ddc5701f05b3bd9771bd8d4905c06640055a41b973aeaac370ab951c0b001. 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/TCADK1894794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7c350c0cd6ac539ab2626bbad7ec48e5032d55fbf70315e0998fdcc6607231. 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/TCADK1894798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3951cdad20d63a49461687058c1013a11de270d0d30b6cb55c8deaf5a3219c6. 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/NLCK41057313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7081b3b8275a506574a523940a0f899b519e9ee1269d6da64de7ebdc8e992b1. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/NLCK41065002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd594a94479ce0450b5b0bf72830d8405b1593ef7485b76e72f4e19ef67b7879. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/NLCK41065004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a9687d5e0ff2d52c2983b4f96939c8a7d5118d156e85923e0d09ca97f4f336. 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/NLCK41065005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdc0a17c6f7399aecbdc71d5d2d7318fa4d22edb7ad1c97927e6e906ab65908. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:52:50Z), 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/NLCK41069396.
The Lost Road to the Astral Hell - Sxrcier Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe36116480494fe2b355b0121aae5bdc9ebc8c051a69eb5ebf46739b803c15a. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/NLCK41069398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4d03eedcbb5af859c8d3c038bde4a9b45256970698739a4448ced22f2ec8a7. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/DEXO22025149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf164306b850b441bd87f1c8bdff856806f7a980b2f48ceb601bd34f49e8ebe6f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/DEXO22025157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2482b51e1391e2e4a78eb6945bb8b26a9f1b37a96ddcaacf94de72dca92234cb. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEXO22025155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4b6821335896194d0a2ec9e1108afb5552e0c34251f152f33c35ae849f6ac5. 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/DEXO22025156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3a7984d25cb73d48aba45b1a665770d9bc51af597fd7af0165da1495325e99. 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/DEXO22025153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd648a0440686d159fff066a730a88284415b3b17de522ea7a0facf95a89a81fb. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/DEXO22025159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63561055253f6c8cffc3688a28e324a81036eca38d87fe38f5ccf65ef6370684. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/DEXO22025160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194b4ed44521c132dbda917a831f9c6e3e188c3a286958fab9fcd2bbce891f7c. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/DEXO22025162.
Outomorrow - Anyma, Kevin de Vries Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03f45237537971d6c5c1c6f88df0a5a42b77170775678796279e21759f7ca531. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DE1A22106745.
Who's to Say What's Real - Mind Against, Colyn Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da1262666a61b365bed412e36dce41eec0e4e2b43092af1d408155f7b892e49. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DE1A22106746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2501a6c99132fa3b670c39311f18fbcfbf2ad05e00a141e851f60d84bc663cb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:05:56Z), 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/DE1A22106747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd271b1446f1f74d7fc605503a7fc43d7d13e45bfe71f0745413330776f40236. 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/DE1A22106748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4f7c72318a32ff2fe16291b469322b8b285d1669dbe9659fc29bdc6308013e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DE1A22106749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d516bf32eede2312a91673731e444f1567c2194fe16b83d1defc9c47791747b. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/DEUD92567700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5ccff84e91c265e56f2498ca5e3c6c0de8142d8d19b910adcecfbea7abfc86. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLCK41076883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c1ab028fa81b1eafa0ce9dfc21e621e119ce8cf2eadb5198eef7d3a1386e7e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USA2P2436393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bba5a89acf829ef36e99df7a5401891e247b629e42b4b2507c3ccc13b484d1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLCK41051031.