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 0xdb985425dbde0197df5beacb09a1755fb56fad55c34e62a3d531db81b1f4fca1. 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/96dc2def-c80f-4348-8ec5-dd54d7cfef84.json and https://artists.proofprofile.net/proofs/artist/96dc2def-c80f-4348-8ec5-dd54d7cfef84.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 0xc3b65d29ad8f005ba38876755ee31d06dbd761cd7b468cd9f22e59c5304fd8e8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:39:37Z), 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/AEA0D2058475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa601bea63a11775e82690678448d43952e592c2755e6ca83ab9c342da3f285d2. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:17:39Z), 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/AEA0Q2042146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fc6c9389f9cb58bbec416a2270a2db984ef7ec8253c5d373cfb12fab47fb06. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/AEA0Q2042148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0e711e94e61351d8503641babc262d9eea5276644e59eb8f63535702c9fc8b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AEA0Q2093059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef88a8f992b6cc97a61a59028936fa640d78831afac89109460cb964ffe694a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/AEA0Q2093063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d5497a054b644c74edb70411fa583f7eaa321bd057ddffb0c11ee893e0e0f4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AEA0Q2093065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cee7104b32c3776a5f09e701e96282472deb9bb8cbc081270ad74e6aa67a9f2. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/RUA1H2154598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed6aa0501c82949b6d7430cb27af3576aaf01282aceb98db890184f5f29f96c6. 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/QZK6M2175622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828609a1334df0507deed8292882da6ffb54235c5d652d7586af120db054c387. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZPLS2116819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27243ba587e28ef1ae267577649ba20101fc681de9bc1b3d9dfc8cb19cfc1650. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/QZFZ32267558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e206ed2271328911ea26dbee48d0f6e9cbebbb70ecc0fa317bcba7cf4050ca. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6N22261617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf82bb5f71c8ace3469999ee78247356753694c35f88d2b5ecf74ffd744faf045. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/UKR6V2238974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19eaa2bbe8638542335b0473479fae756c874f5e7255912b1c70e3c8defe8b52. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZFZ42349375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2810b419463afe53ef754f8d22badb09d0ce5c9e9e55033e20e1b63b30c2cb8f. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/GXBNP2468933.