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 0x9baca988a9ebddc6490c768a087aa516107278e2e39c05f4532ba8f228ac6ccb. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/924ae786-e635-4d98-9043-2d2598899f85.json and https://artists.proofprofile.net/proofs/artist/924ae786-e635-4d98-9043-2d2598899f85.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 0x59aa6f91b150586f481b37d575cc24a42dd42f9806bd3e27dc4e9edea662cce0. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZFYX2516545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1e20874dc511f30867ea8f39d824d54c2761e8b32a1c81b06a73098d557234. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZFYX2516546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef697929912ed27dad1c4f8155c63c458326375bb3dcd1e164f98bbae364cca. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZFYX2516548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a974af06b204a9c43355c7df3c185bab213aa1031a2d349c72c203f522f287. 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/QZFYX2516549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd9b8cfdd760d9452ef8df7e00f366b43c6e9e8504f35c57c36ed99092b15e3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZFYY2562329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33562843363c711cbb28a7fd2fc7ed468d1c433b9e3aa6743194982150211931. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFYY2562331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7205fd46e247b4364a9f6c2baabf3137eb8d93df90668cee2b6c0d8a503127. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZFYY2562332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23fb3ff7c8ba52dc341c5d79c28ad0e8817a4a6fb96ab7ab59501c4814398d2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZFZ42562373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a4a275b96aed4101eabe1ddbcab576102da26b35ecdf97092b0f443e89f061. 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/QZFZ42562374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621a9f854b3b1525105ee538db0890498be26249be3f3b0eaa3962a38d90bf5e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZFZ42562375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe52c362f78c066e93076399684eb1f12b35531cfcbce98d85694c401c428f1. 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/QZFZ42562376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bea43d642936a60a107248d0a9abbe0a646d8f938d263f5cb43e231108e19bb. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZFZ42562377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4780449dc8138891a947ccd8bfef7e5c3d053af12642d719d0790953e03568b5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZFZ42562378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c74f7bda563fb10b595fc35187aa0c9d25646e2e14c5fd0358472f0d2cc6bc. 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/QZFZ42562380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf29de0a73da65717e247b2cd903521da1009c30efb880c4ddba676ad861d468. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QZFZ42562381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61529ac14f0ee417790b33fffb8767dbf6c7f524232bb5e9e537987dda52550c. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZFZ42562382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee411bb646058dc8813e9736b183960ca9a80a29e96068f9b893153016786d0c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZDA52598032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b307f03cfed4af87f67904ad12537f72931607c3adbc9d8d65e7e11d2fae91. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZDA52598033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59ffe36e745e9f1c2b2327f7275cb9986824e3bf32a9ff27972c0068e9b2a338. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZDA52598034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4be29dc7d293a75ff408e1b7497db5d4abcce827073c304ac78fea142014ef. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZDA52598035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ea7f16a25693067e774246112212a82f5314dcce3cd6412511e87e90a3604a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:52:01Z), 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/QZDA52598036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5735ce82268e3cad123e8ef931ba6ac2f78258ec61fed54d75d9f6cb84efea5. 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/QZDA52598037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55e2fbe7e3d85d601911f0171d4026c1d5a8e041151de92c6034479413a168d. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZDA52598038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d70220411b0998a567025319272d0b74226bcdae468a33cfcde33320a24722c. 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/QZHN52595495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a3984aef1f13fc874bd77a614026fc28644ae3fb486eda86dccb29f447997a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN52595496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97480a38c3d751bf50db3f243122ca8d06b8918b99e7788e31395de29fb0323f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHN52595497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e6f3cdcf6c52b803ed242f576b42ffd5efeb3e1b211583713eb32429b1e58c. 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/QZHN52595499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe57ef896892ef21423a91a3801a225e1c31efa8b4052e6af66afb2d93ef0d29. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZK6N2575516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aae8c12761753f2c27e98a4053ca111d8b417f8d0848cc5c816556fe40f5a45. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QZK6N2575517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6554e0ce72e47c723135ad6835dd30d241e5844c7d2e920c8a9a04134dd74e3d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZK6N2575518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941ce92fc2fd161408fc34de77c0e08c9a18217228ad521e5c223a96363c315a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZK6N2575519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06821fca49e1029de27c372add1699c8473153a73020fddb9b04df4754c1cacf. 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/QZK6N2575521.