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 0xd5ad8a7b04637e791e00cf9f70d23435e9133f0d88b0b7d1089a7c57a9da5bc9. 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/e43fd992-c3c0-4b89-96bc-71932ed43a53.json and https://artists.proofprofile.net/proofs/artist/e43fd992-c3c0-4b89-96bc-71932ed43a53.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 0x839577e74a6b310802dbc30521546b4306eb314e193e1fea6abb1a16d17bd27c. 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/USMBR1812899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e08e9feb2150e0a248fe967a1b09be39c44d49a47ec0e59fc7a28faa9d0dbf. 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/USMBR1812900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1121f859cbc3054a031518d9c6b69a35156cbc7440e8a8a3b99acc99cf4786b. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:04:19Z), 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/USMBR1812902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4f2215c6532a1faf17ce410a29a82b95ded756792b0333b98ab42464d69dba. 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/USMBR0705415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1a86f6bcc9e2d61ac4839cd58eaed7cda182c374ba84e0ce859e650750c881. 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/USMBR0705416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4a528015fbf47370678afdd1e01c3fc4d7aeba412ad702d835543b2d4dbb48. 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/USMBR0400548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b235b4c5c3c3d6df5da884b706ffef020577a4bb778fb31ae22706cd389fc4. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USMBR0400549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e939c6e45059127a6d64ddfb22405aab36ccd3aacd57f796eb6ee9db3b12fb0. 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/USMBR0400552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2394d529601a0720bed54fbc9a312bf331649abc23cde4216b5e5275ab79aa1. 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/USMBR0400851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc192197cd83de19d7c022a61c2256760a154bfb2c0c31eb60f24b4f99680033. 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/USMBR0400853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9fb6612efeda089f6d6ce54aa8dfd8c3456c21583732ca9a15082343c65014. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:23:55Z), 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/USMBR0400854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26be68f1fd719ff696a8985110436ac2849ffe1a232cf1312e31c53a546fd813. 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/USMBR0400863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000f692f544cb570c625808923dc32598ad3bf243c7dddd1f278db8a96ab3369. 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/USMBR0400864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d7cfa5e5c6580180ebbe3a292453e93b4f71c282e147424e73e8d6365cb697. 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/USMBR0400865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d8cb29265e2bcf73fad3a7d95b2c45ff988c646d8a118eff42cb98212db2a7. 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/USMBR0400866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1af3a9bae671ddb248a4aaf09ecb3852cf244973510696cf769c352608001c7. 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/USMBR0400867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323f752d5fa7ab616c7dcf3ac0a9b4b91baa7c6d450ab7432130e02b05e9c030. 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/USMBR0400868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8827fa745ddda01759a29ff398776a7198d714147d2c8b7203c71288d59d5091. 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/USMBR0400869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00700b3523f149e8085330866a4af9dbf183eb5fe353a1d1a5d108a40685645a. 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/USMBR0400870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18bd675d0c540398c51c53a59cdf3e250d42f0bc2922da0fb62bcc265f74ac0b. 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/USMBR0400871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec195a4980194e2e213668d44652edf9231ba5c3e4bb6b35f8de2c6cb204081. 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/USMBR0400535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bd6393350c2035d59d60859979b163bbdb3cc684ce7d74e92c98ac034f4d08. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USMBR0400536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b11a407e782d56a2608c8a86f4e2ccc098c0597b5e5ae6ea14b3ca8538dbf5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USMBR0400537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe46e734dcc9fb05c2365a4570c8a1210ac4cd49611fdb680012e97e0a14fef0. 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/USMBR0400520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea92afab2df6d1c6ffa66bdd44fd08b8e29cd142cf1bb7cfdaf33a76cb6abc3. 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/USMBR0400521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3083c77a9d368fa99cf2362b94c65cbaa70221338344ce7a062efa3b4b7b6d. 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/USMBR0400522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6fe478330538bc1ce1a5cd67a2793847b92fbfe8a982a602486af84d2c88d8. 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/USMBR0400523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0664c4b44f9deb97a8f529525ca6825595b95c4c08ffb9b4967f6afe59417c10. 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/USMBR0400524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3365768d86a0316a902347601e6c330675c1d68b64ee068b5ff05aa74ab1e5e. 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/USMBR0400525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9177c361a671cfffa6bc9d373cca42faeb4d45599552a2a953ace6e9202569c6. 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/USMBR0400526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8490ea83f7150e768310ea757c5d8aa15a82ecf6350baa93d098f57ff267dd4. 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/USMBR0400527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b23e37b85bb7249f5d9b0bc48c4a3d3af5369a1fc8b798346f059ecc30880b6. 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/USMBR0400528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61811679c3908e9499b0982d2849ac44e7e87c458a11418d6b6845b3e0b55105. 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/USMBR0400529.
Original Motion Picture Soundtrack The Decline Of Western Civilization Part II, The Metal Years
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f44fabd82d52a0969c27c0351a06e13c6e57b2afd5df27d3ae12d5ef72b1c9. 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/USIR31100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb300934c1aec1566036a1cf97c261159f2c9e971ed82a48da3ed057df33525b. 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/USIR31100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504257a5a6218930e35d51080a8e8f5d7b3dc801a5a8b8e8e5170b49670c3a38. 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/USIR31100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41030234eb84cdabb660af977ed73369f4a9280988770d9a54b3a2003b7fc41c. 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/USIR31100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4718a1b1a860b348968eae89ce54792473297b2ea82a34a993a9fd539fd3ff46. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/USCA28700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0532900791a3d26a1c5cf8c1a35e2336a49c8eaf69d527d0fe66e14f358f123. 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/USMBR0501252.