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 0x84dbce6b3c066e5a9d5e518e89accf69de3123cc7955f2e84f424ea854e57e93. 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/53c899f8-0b65-4d07-aad3-68dbee730b5a.json and https://artists.proofprofile.net/proofs/artist/53c899f8-0b65-4d07-aad3-68dbee730b5a.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 0xe2fa7dc03f9202cc71a4a1d54ef3d256425e728fa6b9cab003db13f5919782ac. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZHN32192341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971afe5fbb7ed3c7c4d41a1fcb2cabb0b713293c9d5a8041053a71bbdba318a8. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZDA82311380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d02b5a1051f675c61ca3cb3a44b45341d2ddab7470811dd4094b3e3e32011bc. 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/QZDA82311384.
1DK23 x Nascar Wizzop x 8mt Stonerman -All My Life
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2566682fbae5bc92aa682bfd037d40ff00525ff342e4cae9cc5029d77d33c1d9. 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/QZWFP2390442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712a1485a083866ee861e86925113fc8542c29fc2297e5f07b01cfe9537a1f33. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZWFP2390445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1e397335a9707fc67eb8365a6e6489261dbcbecaaec6579225d40d0af375a7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZWFP2390447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9156fc28d08c614fd2f94e8ca00ea7e03de4e8fb0a3aeac74a5275f24b0d4a1a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZNWQ2477363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bef78f335394a82e480b6ace66fc270859a69221c70d2fe43520e6c966823a5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNWQ2477365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d2c17f015ae9c8691fba7c2940ff512b55e0d1a810ea0915eb06d9584daa7bd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWQ2477366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0814178e0e66c7f1a73b48b3ba15e97a085a5a8b9a37e9994f1a5df90fa48789. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZNWQ2477373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8077dad10e1a377d286cf22932dc240048c22a05c53708f6c4f88b1e2801c8f7. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWFS2441896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f301b3e475f56ed62c2ff253275e0072e2553071fe7ae914c77114eb7faad20. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZWFN2471231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa122e2add4da26b148a64df500415f12e3412aeb00d16a93fe40896e09472905. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZZ7L2417252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4f66ea55a0567211f238a730fb1ea739ba11ccde63ecc743ff7d8daacfdf1d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NL8RL2502044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b7a4bf21203c02e6aa8bc1405fddda5817235b53b6fafed623f650b67320ab. 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/NL8RL2529146.