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 0xef7c5bbe1c7e378b1e5103b66e0c5bb3a15aa6e76951be00b8a1dd1a496e69d1. 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/01d8b3cc-1c7a-41b3-91b8-f1795b6c1495.json and https://artists.proofprofile.net/proofs/artist/01d8b3cc-1c7a-41b3-91b8-f1795b6c1495.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 0x5ef5b44a596fbc0d534c5f9b7fb38835af77161b04facef9995a97906da63dc6. 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/SE5XG2314312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99eefb963961e2634cd91cbbdf194ff4fff1a4b803ad88dd8f959595060efba6. 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/NLWV71600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617fc19fc0b6fdcdb0f85c66d60f1ccd7ae62aeb1f2e99ee884e71e82eb4287f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USDM31574701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd685f943b4dbd24f078a3aa0ee4bc9d1627a9add05d7b187cf0965dbace9eba6. 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/NLS241500425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ee86c7fc3a5b61bc69e7632738407eda55e1f3e1b2c8e1db5af41ab03e1945. 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/NLS241500426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034d1149a29bf8cff16830a8378e360059eaa62f7a75ca373e2ff577ab7a0994. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLS241500427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7764f392adab28afa0d11250942384340c5566f48cf99ebb354fa38cdf2dfd6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLS241500356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e7ee4986333473a8b25da00e60cd4d5eb945038609a1f4d2ecdaea6e90dc05. 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/QMLA71400297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e79a1c97f1956a8700b924d8c6055f4d1c0af3dabbb3d92ec41330184afa183. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBLNZ1300265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe75916d4b0146da219153662798518445ded15eae62e93912873309bd184b2ba. 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/USUS11202255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317af30c5de322e3a71487f244f1f5f64a2d0abad875f7c083eb2b8edc0f3dbb. 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/GBTDG1300995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe309749eb6ce353a5542cae839ed4a61c6e5a68daf1f4b667e032dd14d9b3431. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBTDG1300539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871e2cd3337fc9b9ed3c0fd09d6bde9ad22ebf159a9049b36fa5a97b05d42cba. 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/GBLNZ1200234.
Kill It 4 The Kids (feat. AWOLNATION & R.City) - Nom De Strip Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f60955620444f35ca0b73a995db1604978946985958644cdb9266b1ed4fb8e8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USAT21601521.