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 0x6a71c949daff30f00371b6f7a0574d2b3056fa9bea3df841833617799f49ab86. 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/08105c33-fe1e-4299-acae-851b66cf58cd.json and https://artists.proofprofile.net/proofs/artist/08105c33-fe1e-4299-acae-851b66cf58cd.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 0x475d47fb7ab12472f91ca3a67058d7d63b7fda8b32a45368038c2ca9f4054f13. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWFH2388774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f20262737218ab5e6a578006e4be5dc1370e8da70da6e9005b918ef638f37e3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWFH2388775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b9d2d584f956ee830d23c485d9ee838c976e3dc69d546ae044fa3fa4c59fc0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWFH2388776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ce659815d2cc262aa6f3b54f258f1f7156a2ad8898be478277268d33d779b4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWFH2388777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c3738c442b2c973d788e1eb23ce0cb544bc2e1859d8c14820e1232cc0548f9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6K2381723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6659ba57530dd76397a72136290b2b6ff1a800a0d1656200481d7af2cddaa1ed. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6K2381724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48d10bf149e2eb28663a379355fd4dbedd15afb620bddc1d1821903a5be7c91. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6K2381725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c3fc6afd2b8bb616d457ea39a50845aa12894566f091cf28be9fdaf79cf8fa. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZK6K2381726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b19204797bba081292dd9b11d43fc6ba14f0e5535b97863d394ac92f09edad. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZK6K2381727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e60ae6955ea3b9c817673e52a4f5ff8be4a7fddbb3c25b2e078aa58df976ed3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZFZ22045667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2c21face6572a23f030c9974df2fccab419d1e306520114738becb64eba00f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ22045668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a84ff45d27e851af9c71c4fd0b07da877eb98ee823b1c0910338c259f321b3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFZ22045669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7850c9e213b2f5464ba6ad1e75665181782802b807b4c83d7b9e862e6ae1f4a8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ22045666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1382d1aaef7ab09cb909ab0d01e99c4595fb9584251068e67a9550ade6f001. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFZ22045670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0497d66b1c3b4c2c796b2c71119c123490d83f438849008460f6b7b55b27c6d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZFZ22045671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7850c9e213b2f5464ba6ad1e75665181782802b807b4c83d7b9e862e6ae1f4a8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ22045666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141f45149410b2e56d263b99540057bc97d1cc59eb2a4649c1d8986115f068fc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZWFP2305242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f0b1365dfd75b3a5755e235ca5ff188d7eb359b4f5c1e9ec62493d358ffeed. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZWFP2305245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e05cafc066d4d000772f163ffeeaf47105438cad549232e5e32cc229970703f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZWFP2305251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167ca99e00f7804a6ba3f494f13ce57c07d815744ad50163c007847376f40fc9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:28:05Z), 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/SEYOK2413257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b87cc1f101037734bb4db0c42c0a8ace89178364df5b32494e4a928d264aa8. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SEYOK2413254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e3526673a96a2af568befc98cb02b58266b384650a1f036391f37a30fbd7b70. 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/SEYOK2413256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa591e17c96c53b3e39e7379e93e0d2c2afc77da715cfe89abd509606816bf880. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEYOK2413253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4eac6e99a6e06baa01a4789937c6ae480839e24c33355c3a3037ede471b9289. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USL4R2387799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6649cf14f582b73dd3faa9e3168e518f594659166cdf774c65e05d4637959d44. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USL4R2387800.