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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e8bbf2a59fcc79aff938b3b33446658c642e4ec55373e04267b4837b878e9e. Chain 2 (Bitcoin): anchored in block 953875 (2026-06-16T02:12:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07f5ff28-ead6-4d03-b0dd-c1d6070ec150.json and https://artists.proofprofile.net/proofs/artist/07f5ff28-ead6-4d03-b0dd-c1d6070ec150.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9954ed70b921a1a384993a4298c9105929b7efbc57a97f098489f44d92f88581. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITH641927452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8c6c69aeb6c7123615951307cca2f273950c2a1f6604dcdfbcf42d97e1b91d. 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/DEU672001995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8c117d18a0b707a0a20693ef2e8a497374e73e78bafb04a9a0494c99ec063e. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEU672001994.
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 0x23f6474f5a0a3a7a157b5a0829ebcb50b1559db9a40ea58ee3361842c029727a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEU672001996.
The Memory - DJ Mau Mau & Franco Junior Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a2b95f754c587fd2469b866b0c2f5449594652780f2b836ccff54dd94092c4. 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/ITH641607192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf39bffb9d63266232900e7dd4d068666b9a6407ba9ebb1222a27dbe90d993f. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/ITH641607190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa6bd988f25d91da49503cef9af911054a7e161060bc4b67d1504e9eff07430. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/ITH641607191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb776cad488a997a4fd63ee029d1eaf11e980904ab100c27b7f93a591b3a468c6. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ITH641499408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f7aaaedad7d70a94877760da352fbaaf08be2ab2565715f2c58808d5179024. 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/ITH641499410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4ce79c1bd7b6862bd15630366947cc77e570e2899fd495ff774c37d814bdec. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITH641499409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddd6e08e83f86274d1de3793fdeade2d2c2c439f4f3dbe25541b83f31996af4. 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/ITH641492513.
He Kills For A Prize - Davis & Zopelar Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad90f5b76e3916a0b8f8ec4f1fd7812abc093ccdd36da671e6976a0e4033c799. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ITH641492515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf363c530337ce51c85ba77ed7e7eb68b288e23cb3dbd5af283b50c78551e4c64. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/ITH641492514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69260829d7477690865e80d9596553b701a8dd0d8bcf36705de189c03c3ffd23. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITH641006940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc0ebf56211fb88815738a9c2365fd9857678aca45a6062f40e9567d76f20ad. 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/ITH641052719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b6aa540abc9410b70dcd73abae63c1e8c11827fe899ee74f932f6b95eb8dca. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ITH641052721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260e0e503d0f4967bfcb14595bf2acd908730ba853b6ab32e1a87567dc8f0d14. 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/ITH641069670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20437375c355194906d2801f8571d0b0df1322993c8e6afc21f693cc5c151eac. 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/ITH641069674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468c563353b4df63dedfc8ca8961045ce25515a9fcb026cf3b4e03e99dcc4133. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITH641069668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2a1200153b30bc24d64690762b8849bfc0b958d4f136e066a0246fa280807f. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ITH641069669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6158e1480498c1a1a36f9ab0fbbcc7ac5cdbc0349f215d9208de1087a612b0d. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/ITH641069671.