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 0x05a45289102e1616f5e5853aa8646cce03cfa45989c2fdbd2304980cdddd4f98. 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/5e7eb094-ce2a-4e20-824e-d666924db207.json and https://artists.proofprofile.net/proofs/artist/5e7eb094-ce2a-4e20-824e-d666924db207.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 0xa5f00d7cfea902293795f44efb24fd20fc01d783c4e8122661a07f2a2a11ed5b. 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/TCABI1259203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8d6acd0434ad9bc608c428d7028d9d50aaab53f555fad4f91b3c52c44962ae. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCABI1259204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf65afb975b2c6fab45f043e9e620db00395cbd69ebd5f0880d13910907c49ca. 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/TCABI1259205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a79a55955f261f8680312329b6aa3316d0c7dbc95b6d4454f5a607c0c45367d. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCABI1259206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd254255ac689d5cda408aea4c4e0f12e18eb6df73adb3b81188212846a65adf5. 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/TCABI1259209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd4e84a706fde9c7c3add19d260ffbb834abf445652c3a3535da3130a496adc. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCABI1259215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4fb46b2d91793d1c2e5b06ead8aecbc0fbb4fb9c26270b4c5f0aebbdd8a0bb. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCABS1308384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de66f9f516640c98cc8e37321d66c335183e134b899aad277d07063646c56ae. 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/TCABS1308385.
Heart of Fire (feat. Ryan Kirby of Fit for a King)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5812118bd96f5131c0e073b15101bbbeb2f95f6985a3e8f0c3a3f2b5e0a583f5. 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/TCABS1308387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c7d4bc2f9ab495fe2c5c3e3378abd2d23507160d9c1ce2092564fa31784783. Chain 2 (Bitcoin): anchored in block 957752 (2026-07-12T20:53:32Z), 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/TCACH1506018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643702d7e7ff17791a72366c99d01fcbb4c41815e931a48184048d43f72c3e32. 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/TCACH1506020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee95246e51ae7c26b0c37fdf71fb53c7a52f39fc219d67f8bd2d1f9d95f81fb0. 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/TCACH1506017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2721533320502876adff7555194c76d8b6b9c57978cb849f38101b957d33a1e5. 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/TCACH1506015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0ba4b5681ce76d4402e2c5048a2881ef826184bc47d8c0787d928467c6549b. 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/QMUYR1600073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad4f0094ca53f40bc7e8536ab20d365215c67b46d210e2038525d9130e8bbe2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMUYR1600075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8a24f478e45bcc2a9b8e00c639960a4e76226cf79f45382db9976ed89e8b75. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QMUYR1600077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x192c1bd65b233f1fba088c806d945b90ff64a32124e0e36a82c4e1b01a569290. 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/QMUYR1600078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64116ced1b39ac061b369ad459bf39a42cf518cff0d7cf110e12b3ac8032a0e6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMUYR1600081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5805357216e6da09e73007320d92f14a4a1ff3879e5eec44cdb95579c63dbf. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:05:17Z), 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/QMUYR1600083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f53ff2750dff90e0dce05b6e9291880f48a1fbe90a8b59fc62fac5cc6b4d842. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:02Z), 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/QM4TW1820515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee2080b57ac7c10fda5616b7870be782d7b2541903eb9168b7ae300897b71c5. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QM4TW1820516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4313445e9bbb33916f342d8a1e210784503e9095a41c6b9d5f5169509313755d. 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/QM4TW1820517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37a21d3b1c81938c57c82c1f3be8225a25164c48394bf7aee0d012a50fcbc7a. 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/QM4TW1820522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ba00366922d4eaca689895acb442090d6612f677c38a470c4775f3d801c6cf. 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/QM4TW1820523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa808bcbb7fde664eb69a89180c11d101b4c1711c46ac83fd3f05954e3e0654a2. 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/QM4TW1820525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d81ea4b3f0915156e6737bea0d79a64867afeaa3b49eedde99a406d4fca7c97. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QM4TW1820527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f427683fc698c53132c7c8a91274e7f605c0784a65f058b7ff8c78a18fccb79. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USHM21991431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabd51b5e85ee19642b60bd9027fc532853e6907049b7998f0b5200b2d7a7f02. 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/TCAEZ2051041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29161fc7df08d6b1c2176976f2df83cbf31cf8a17195321aac87b12813135d78. 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/TCAFK2100510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9480e6f612bce853953b56b857bac7b854ace47157e80a71eaef6f757ac940. 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/TCAFL2175252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f20161279c0bfb09f62389aa0a6070f5aea32f7072f3293ccb80462c0553e48. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCAFJ2106164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcd131250bcc41795544249acf6740dc74064d521ff818fb1659703003980b2. 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/FRX202445136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3986c970fe0957a3c717a6036e0e83204b444f8c1405e5d7615a5b2a9819bcf8. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FRX452404496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23df941b6fa680c7bd9ab20f3eae800d3e8cd79fe4dfcb79cf48edb56d427912. 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/DGA052409552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbe8d582227cd8d2f849d9109fc648f0effef8f64cf346ccba5f33099234380. 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/DGA052428716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66df965543e9a7467ce6d069deaa09a331b32c1d41eee40f8ee4799e9b77f3d3. 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/US38J2218706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d8b6a2161aadab3a436bc8272e0d6c622047f2d9293d6a0e8f2b2ff241a243. 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/US38J2520107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66df965543e9a7467ce6d069deaa09a331b32c1d41eee40f8ee4799e9b77f3d3. 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/US38J2218706.