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 0x8ec6d0120a5d4fc9b30b02738fe49bb65ad36b0db96dabf97285530d4a4c6dbb. 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/96c46138-19fa-4fa7-8dd9-27156465a4a5.json and https://artists.proofprofile.net/proofs/artist/96c46138-19fa-4fa7-8dd9-27156465a4a5.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 0x533a9bd0d5adaef5a7af61a0d51ea466bf568472388108d871871f6d53d03503. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZS7J2269701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f85b39576e90def9d7928d3e3aa78d582a30c08be380c8320abbff1ac0e142. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZS7J2218898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9653e5328ad42d3add836436556aec90e94b2f2333f76c542dc2b563f1a324b0. 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/QZSYP2343524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc15321d332476562ceb1eab65d0ff4d794e99c5f5a7f89d4aadfa5a2c4364d. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZSYP2335716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb734fc243367073081311730d81f2e12fc8bb6eea79c8f909489ade9bae4d22a. 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/USN1R2406001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff7ae6b2edcd0cd6f6104ad7b855b34cc0450f125e5d9646bf2c3621257fa81. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USN1R2337004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08e39336c508ba7555af1c3067cd3b8c2ff1d63fe81a7d03251217063e14c4d. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USN1R2337002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3df975e4e4f813344e52058824b8d359428a56d67f853bdc40817fa3c0ec74. 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/USN1R2337003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891995acd0cd0dd73c7760bfcd9c138254eca1460e5fc469069529713bbf53dd. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USN1R2416001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4e8341f8c42c941efd06c5e72df77edddff82317f780834c6ede68006188ec. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USN1R2507002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d4fde2b7bad2aa7ccd9470401025efee2f26338d5b9f9e279b0fbc90109e75. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USN1R2507003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb12c4c80d24755a13f2cc4e0e4ca176e9653fb4ff2171b591bbae8242462fc0. 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/USN1R2507004.
Nickelodeon Mix It Up! Vol. 19: Electric Energy (The Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0efbbd9221c00a5c21ad58f66703de6a1cf5c08444ac9decb2cadb6f69f7a67. 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/USN1R2501009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b1861f53107df7465874a7c7a33b7001d40cafca9f9aedc613d83000310072. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USN1R2501015.
Take What I Can Get - Bumpin' Beats Remix
Nickelodeon Mix It Up! Vol. 16: Bumpin’ Beats (The Remixes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c306bc46c5e499f60186302590f4d241e6d8c179237069736b513254de97112. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USN1R2438001.