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 0xacbd212b6f2bc6893f5fcb5bf22ccf6f7e802f9e8d66b095402e47a3188a8e2a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea381a91-afaa-48e1-a345-5c25f3526bb2.json and https://artists.proofprofile.net/proofs/artist/ea381a91-afaa-48e1-a345-5c25f3526bb2.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 0x9788dcbc35c8c0c7b971048b14bdacce08e343bf1186dbf36fcf38b0d86d784b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UKEX32123803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd410ff6c474a0bd60d3f7061ae150715d65e2bbfbcad978619c34563bac30c1. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKEX32123807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bd0245cacf19b9fca446076a52219c95ec9039373068dc09beb7c0edf2f894. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/UKEX32126767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ccc5fe9b8b79f601028514de3d3fc9605a2ff07fdbed78f8db7a7ad541e6a4. 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/UKEX32132787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31a3b525b26a9b1f2390aafe25e8716047920b1223e5b8fb69ee3a66cabbaf7. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/UKEX32132785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cc1370f04ced41ecb93183ad4549755834d91710b4209b89212fe10641d48f. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/UKEX32132789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d23386899396630e03ed3dca4285f92c6a3607fac79cf23cb50256c7a152c1b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKEX32147357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dc08685344137670981095877a95e601dd9b5f1079ee896070c864a0b4c0d2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKEX32202570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdc27392f35d71465ffb2baeed91a5ebebd1325f892ab93548d4bf192f80c56. 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/UKEX32202571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ea8c00269d8e146167b236e72f2171c11f149ed3aaffa431bf54ff18416677. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/UKEX32202575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278dde8a0260a85317c2d9ad45ee069ce5e5feb304fed33095fa9bf816115fec. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/UKEX32202576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8d3854f48509a80dc9b41c91421b9b3932154f1fdab243ddea08ab6d4975ea. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UKEX32208784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bd48a0738da9490571ec77c195e5338afab0f31945a76bca618995b9e4daf3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UKEX32232321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1a2e276b0990ade2805b4e72f15af79d8235afb75128a4b753b2f5eb94f0ad. 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/UKEX32233989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b287584da913930c4d69306c8bb3f7cced5123fca3e75ea418c37172f3e0d42. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/UKEX32238594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8f16d0843c0832d404468f07131aae2f9d7d79b310485c8b5da8f704d332d0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX762399718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1a72810e556f2069192c083ae05cead30a2cc2b5447537d6e9c2c0c21da4e4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUA1D2471752.