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 0x8b34ed581f061c6754a73c2891cf30870855c2e98d84e35d901dbf3f52cc69db. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6e1a9526-d415-46cb-92ee-4083a459bb13.json and https://artists.proofprofile.net/proofs/artist/6e1a9526-d415-46cb-92ee-4083a459bb13.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 0x4316f2d47885f2d2553c315cb2228c0609c869661cccd5e34fc1444c430d6428. 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/GBEUE0700858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577eec86d3af49ca75e3e8d3bae8741db0ffc29bd88bfdf0e54facc9c9ead3d9. 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/USR8J0800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7977a475acbcb0b98d76189f373d929c2dd7f4d9e074779acba69946cfaad9b1. 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/FR0U30900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d023ae4f892f6f8e3b3b04f755cbbe94f58401bce94b61fc8898ae2b99c86e. 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/FRR640990033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4aceb47f5547e66260c711a891c238e0cfab8cd65928c79539df813b3a410a1. 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/GBEUE0800928.
The wicked thoughts of you - Pete Phunk afternoon rhodes remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4f99b179fa3c8a1abdbe4842b7d49e4b877538f381f1d59966c4268c267575. 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/DEBG60700141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9691d54cc9f1e7604bc5e3abf765e44c3390b4b31d622365c5b279804852c867. 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/GBDEX0600139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97610c5f77ca22d4a79ae4d21a5ecedf42eefac2c74ac6c123623716035c9fb7. 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/DEBE70900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6a0e990d4fe30894671439c96eee112f86c866d43c0dc224d19e97a3857aca. 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/FR0U30900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64856abe5cf744874713614846c33abe6ae2e3f477e77d475a0835109d6fd267. 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/CH6470900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c5150734a396f84fc915dfa6cbdc9195911c97d18924e1f65c2d14589339a3. 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/DEG930910425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b75f2db098494d439c3078759d3457c293c3f9406a377a12098424dc5373e84. 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/FRR640900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72b135c2cb49c976c0c2c6fb7a6361eda17042cd6da14f452e2929ff7813ba4d. 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/GBMEF0600056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa0552571807b35be243ddc33bc89de690213f2f0c2f9650756924c86ad0319. 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/GBEQT0901178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cd026e7dbb63fb9ecc3ebaf1a5e18ec62623a95e11d640f0b04ede9b0e3032. 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/FR4S80801650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed584a6fa42afd014b45b4c27ede6f0b1f76f886f47e2b4b2c8f9f320dd01f40. 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/FR9W10902430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9e190fe66b2b882b702a5cf8c011605b117f7909abcdc8b5e27eccd421a8f1. 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/FR0U30900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3135f972169713dc4c032146005aeb989c1e8680486c8ea1fd829d791826e04f. 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/FRR640900030.