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 0x98454e8bd2ef22e066d64cc07807f1ff38dbc23c078b3549352cb2c07229b37e. 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/c8e358a5-4a21-4b27-b253-ce64add9796e.json and https://artists.proofprofile.net/proofs/artist/c8e358a5-4a21-4b27-b253-ce64add9796e.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 0xe79ec084e55cbfe2f1bd33ad48d5a9ced4b9b61983d3c52bc25cf1c7d0cf4984. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/TCAGR2234599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac4fbfb417f4e7383b50e145e0c8eae188bcff4be626833e28f611ba9440354. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAGR2240869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccd8d9491232451d59ab2255dfc62527035aabac5a07e5dd9574a5369e61c8f. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/TCAGS2398362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38ea3dbd141a344f765c11fc1d45f49abc8518fa6fe47c0271dc64a8bdc654f. 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/TCAGY2355988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc3e4fb6e565742bd33f3482abfe231888c10d6fb02ea2ac257ded72f452013. 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/TCAGY2356015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8348ce4876c834aeb94d62331310f327e93e19d8c5b88d3465c6ea7e3d5e3507. 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/TCAGY2356041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe16a3030bc67cc41be2d2a1519a4ca2269553ba6a3b4d64b17c42e20b3e2e9. 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/TCAGY2356083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5724fadc52a765fd0f62bcdaf5dd0a4b8447deead9ed6c2612f28deccecd43f. 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/TCAGY2356120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c96707318d21827168dcb7f71eebad7858a8e90f94d5c25678a32ad581c2282. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCAHR2353259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096b5b15349a9410465c2d538e2252ce01b5234b74649ae9479063effeddbb63. 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/TCAHU2405444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d7b5cc804b9d70b50d056bf43b0b6188b692dd074c9c4d8ed7e77be9f2c5e6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAHZ2410587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9a438c93e4fad7cc3632b76b98f453f2a0defbedf36bf5b597f23d7fad3871. 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/TCAHZ2410871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b395296b13f7b2106063647535a347365f709349dd239b4ca1580f1b1961d4. 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/TCAHZ2410892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1028cf5131419d5029bf0ac4672234181810e84c84509077bbc64a1fcd93fdcf. 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/TCAHZ2410917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa851ef32e8114896b3f0f6fb996a23dd3fbf9dec3771568c265b4b69a5714831. 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/TCAHZ2410944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177fd04728729479c69ff3803a75d0d94a9e0e3dc4d966bef6627a9ac17e9287. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCAHZ2411039.
One Thing About Music When It Hits You Feel No Pain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb50bc9cffbb9aedf18a6a0495d8459b6172acd47c86ec6e21c5c15cc2f8d146. 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/TCAID2418159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf794df191eb63f41f6a090c81d011e2b45705aaf55382cb3accd1ec3bdf0990. 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/TCAIE2418447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013111f7a1a19c138799145cae986340fb3458a2445111eec9fee5327420f7a9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAID2418501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bd99d50bffbd3f669c8516093ecfcb3fc604768f0e11e5486fdbc539cd28b6. 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/TCAID2418659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2d389855769dcb140e70e53260e3fa08f8c2c31acbe627f1f587aaf4d7e439. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/TCAID2418813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522eef127a2d6a05299f0979e71f69e89a93d1067f21c4ef91df8eece5e6bf10. 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/TCAID2418864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff13589d25a97f38d2057d810cb4233d58e9d0c3fb0b8d94c14a02d0856a35e9. 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/TCAID2419106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd542502badb642dec96444846e30b1f23183b75d90e14f171ecac4e5c7aaf86. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAID2419151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7040385658463ff2226b856f516009e2a896109c1f139c8575cfd2914f243bf4. 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/TCAIF2485615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfa6032a9aef553bcfa02259b9722bc14f14d916a7069e013da4c392bd3857c. 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/TCAIE2493268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e814f295e5aa6436f96de33196be33e8ece34a3e37752414469aa507aad6cd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAIP2405617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3799ebcbc0532f3fc2c58feed53e37b35344c19ba978bd5577304b5ff4a545d0. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCAIP2406615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef22724cf5759395c5f93fbb7afd28c9c70744135688f5d3c85aff72779e2364. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAIO2406632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778c34fd636ea3a60431cac1cfc739c4ad5e8e02d12c34ba0a9747e4dab8d519. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAIP2406640.