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 0x860b8bfb3b0554bc656ef90d18a30f43069b01bd033f294a257ef264274ebecd. 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/b4130ca9-14f8-49dc-9785-f373955b0166.json and https://artists.proofprofile.net/proofs/artist/b4130ca9-14f8-49dc-9785-f373955b0166.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 0x548b54e329e874344185891bb8dbf0641cd5c3d679f0b61b174f72ba35b30103. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/US7VG2059970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5431f164538303a89a83cf5135a5a48df1f2b80cfec9b4de1d38010e1658bf60. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/US7VG2097281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b590b707f06961950d9876210d5b999188ceaa103ed3adcf5b6b57946e5c821. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/US7VG2097284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab5813240f608bf43eec04926d5721966ebfcc9fc048bdd567412ea847016eb. 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/US7VG2097286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d21543381c3d00334c74170aa1f55a0ddda3b3f8823f9de1aa335b2cf337970. 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/US7VG2097287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5d567f7e5ca39891470e699a11fdc53db020a94917a2353734aa038c486264. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHZ41930648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ba7f0b6ee8e800acb42f0bdf5148ec11e0f6510c7bc39e1fabae7b32ec53d3. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZHZ41930649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94ed383714aaf5525bb5656f25187366d70a22007a8e8a5c8981b725cbdfcc9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:17:42Z), 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/QZHZ31919116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93872ebc47a0d65abe06e2fba996e50c98dd0c41974af87f5aee911e21302987. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:40:22Z), 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/US7VG2059999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b34b436f214f8d1f694494ccf5af18457ed700a1faaa9bd25c5d8476bec2ce2. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/US7VG2059419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a55427015684302d1e83f40cc01ce2baf7b6f78610cc923ae33b8282f46ac26. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US7VG2054087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca46dbf335d041cebad319d08c45599e56f88928266c7b1d01d920c7a898777. 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/US7VG2054092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca524310ea25e2649816fa1c55c2374b76eef5c0581cff2ab785943c352f6bee. 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/US7VG2380010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e64abdc6972cbdc10fdb1ea1a141666fc674a04fb11e46644b727b9bcafa1c. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:29:10Z), 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/US7VG2380014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2026b83ba369fbe20fe5075b6701ff15b36678c8b20f6f4c1899600cff025c0. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNJX2397505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce556540cbc22ce69484ec82ed0ce24e90b20420b8f837566b8a06f442384df. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/QZNJX2397506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82505544892e91f6dfdaf953ccfb82941330578ca85e8c34c316caaabe53634. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZNJX2397507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eed4a2b7b691ab31d84f3264dbe8e0d22c10e4e9a566acb83e85ed6b731dbdd. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZNJX2397508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5581c0839e3d34386afdb3c55fec394d7e7633d5ac88530f7aa30d94bbc42fd2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZNJX2397513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8481a21206c928211a9b2ebfbeb2098322232432808d01d9d189336019b12b15. 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/QZGLS2407940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb001a34575c3973a373a7118dfbe8e9b6288bf5aca83ec7c7e19e25f1f902124. 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/QZGLS2407941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458bc94ca639042139fc2c4a34e2b4ffa86824f32b27c603e485cf6bca651a90. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:36:37Z), 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/QZGLS2407944.