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 0x3f7d9ad9efe87489cf1a6ddf1d6788876f50ffc09f4a01c546f1f57de8f5f0c9. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eeb77e42-c507-4030-aa8a-f4dec88fd033.json and https://artists.proofprofile.net/proofs/artist/eeb77e42-c507-4030-aa8a-f4dec88fd033.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 0x14d51ba413df2b9feec42bfccbaee2300a5f23612da9ba8d35baa2b5c4666632. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZDA52210168.
nu am vrut sa te omor, a fost din iubire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2107c4490ca52679b5909a534d569e763d83ae71883565fca2456a1054112dc. 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/QZNWT2336557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a76f38829002df171310e3636905a60994dd40cac8a1c6d9060b018f4f8248. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/QZNWZ2387210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94183bff29e3eddb1864a3e7bcf463aefaa32eb191c297a979cf97775f434978. 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/QZWFQ2323242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecd7b5b90cb9d5535792446b59d58338c38f37d198d93d0d12f56a3e769412a. 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/QZDA82446835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2683d02e23eb8d6328f76996ba6c275b849cde2e107333e6f7ddb8e190c88994. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZHN32468056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a31c6c429d1d84d802b46d50b344abb72bb802314ac5786d37a7b90b2cfd353. 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/QZNWQ2414625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72db63b38587d12f190b882927d1847a77b13f21b474e1ee3af3de8991fe8406. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTBA2478100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7972864673b9d3e23099737de828377fe062d74b66e090faa36edaaecd56b2f. 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/QZWFN2418348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eeee9102800b3e4b32bf0d8d4e56d28a460532fe0e9bb952db45c1ac99d5584. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZZ7N2478879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eeee9102800b3e4b32bf0d8d4e56d28a460532fe0e9bb952db45c1ac99d5584. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZZ7N2478879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a85310b5f2a3e153a02cf558692e446b96190e597f2d7be5208b103c93daab. 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/QZFZ22509223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eeee9102800b3e4b32bf0d8d4e56d28a460532fe0e9bb952db45c1ac99d5584. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/QZZ7N2478879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7972864673b9d3e23099737de828377fe062d74b66e090faa36edaaecd56b2f. 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/QZWFN2418348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9856f4ef68cccd4a9895f1b4dd7456917cbee0205c2758325c519fbd2d83a63d. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZFZ22509226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd4ac33d074f31c657f676ff107e732affd19586aa2784a43ee7e80c50f1c6d. 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/QZMEQ2563974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4518c7cba4fb51ee1152ddc40f54e1b4fe79eac4595235106a1fd8c8109ee962. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QT3FA2581417.