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 0x76fe1059dc5aed1075d1a3f26a825c67ac57e3f7e16ad8dbde1c5383fd51b9ee. 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/cf9fb8a8-3e78-43db-8db4-7a6e846c5658.json and https://artists.proofprofile.net/proofs/artist/cf9fb8a8-3e78-43db-8db4-7a6e846c5658.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 0x6cf28dd50ee025b6e98dc8ace72f0bfa7d26dca975bd0e513aadd412aea4cfaa. 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/GBDLA1390013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97a27f5b3f046237911d939491dc64e9e5db5692d09b70518eec2c5f8d500e4. 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/GBDLA1390014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046aadcba5315f4b524c53fa80ed195c9d86e74777e4ac12640f8497248bfccc. 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/GBDLA1390015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7567ee0f76a992ccab8169e8d4c3362bf1ca52678c2b734e4085fd9543e95288. 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/GBDLA1390018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31aa68cd936461b1ed304a34cf3c0f07fb91b336ed2bb652287d3f7e322b837f. 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/GBDLA1390019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fecb60d34feaccf5c8d4c4f4370fead2a764a2c519545bdd7589a1da1e3e032. 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/GBDLA1390020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9eba5a6d0e252449f5bd8a638fb6435a582fd9faeecba3dfc51d57774375498. 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/GBDLA1390022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bacea56518fefe00dcd342ca9d806719acae8d3d26dd72e17a11575b18c6ea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA5KR2046018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb020227aaee2eb8360b95239015642fe674c87bd4a5f3b622450b8bf251594f. 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/CA5KR1715622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4dfef9f0464c70f3b3da88f5a6fd6170bd0f60bdd3ecb3f8fdbadf9eeada29. 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/CA5KR1559487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0944e843fe5fa866a439703ca180814ee686ced892ca540821fd97bfc2944495. 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/CA5KR1531983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98371dc90b4c88b546b848205c0e29f165ccea3b5b25a54257f6f74cd29557eb. 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/CA5KR1500238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe799b2b46cfc21d34ba542466672be9dcea78dff3e564278b1791e92a4b9a806. 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/GBDLA1290076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdea98434ab3bbce20d98a7bf730e094b18aeb3c64f1871e52fb75b2f59d507. 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/GBDLA1190046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef357a3ca99b5b22468846683aebffa372b580c97e9bf496c0bba20574680607. 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/GBSVH1199791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d46b0ba81b844e13219b29c7bb6a4b3ad447cebe16383d35bb903b16af3e52. 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/GBSVH1199790.
Heavy Artillery (SkisM Remix) / Reploid (Document One Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bee48a8474b3efe8c5e78e57fcc3188eea3ca89bf3205f026fd6e9a90311bc6. 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/QZHCR1900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e058c9e472200c38532f59512bc88e3e4aa9b3a7e95f037920da00eb6759318. 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/UK7H21500007.