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 0x36867b0da0a3f82c25c79b0ddbf89bf58ddeef855f7b9ca6a8156d5e9a1bc0d4. 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/7cc4a638-34ec-458e-bd31-fb1f0d11d7a2.json and https://artists.proofprofile.net/proofs/artist/7cc4a638-34ec-458e-bd31-fb1f0d11d7a2.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 0xa4afd11ac65c17ff1831d2945540a1957e6c0a53a035bbdec274d14ac1e24ba5. 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/SE62M2300605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8f5c157e1855d52c0eb3b85d4d485b60aa3f93c4941d38c6087bb9c8014b08. 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/QZTAY2363651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa309c0a5f57b82669c1f2115637cd497fe97825c8c46d03e43fc2f86915918e4. 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/SE6QE2386483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc940c0001120974cd784f9be4353ca0511553948b5e7181e1c948586a9f1685. 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/SE6XW2398703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d998369b892b206d92155bff1a8f15b126eaff7e7f10a2dec4ec1880a7460cd. 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/SE6TI2376850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e2cff9380e21c05ba3dff142cc4400133bcb2401243f02f3b5fbe07ae97e6d. 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/SE6XW2350724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b26b90433c2495c678bbdb2ae52723f081b1a8ebf52659158195dcb5a86009. 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/SE6SA2381372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8a26125fb9506b2b58e90a63aa2b38cff4eac971acb4d81d465f74835b66c9. 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/SE6HN2320782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0214ae8a30b72e5e40a1b13b71fc5597891a282546fdc17b129ebf023a801271. 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/SE6XY2264114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ef885706751e2070af6039e046f5fbdc5355d940e79b103e72a4ee0f6bffbd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE6XW2203296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0244a579f26f1cc55a68c29200c108015aba504da7ca3a8802960bc491967aae. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE6XY2347542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d510a81c2321880b8e4c5178e49d980034e936a75cfd9bc589b130c61481980. 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/SE6XY2337713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe487a04c6f37e6debf07460d547dcf3c9ef0b05e7e4b5d37c73d9f6c21411051. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SE6SA2317402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7f16be3941203626fb846fd9530308f579d8a4ed6986de022f27c11b31c7db. 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/SE5XG2405604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ab230867b93becf0d01d713b67a924ab068786e0059d3f114285091eb77f6a. 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/SE5752423971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2469b3c44796e173a68464e1269d9347295b2da77a4d65e7638a4d1d1381fcb4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTBD2303778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16057286ca6debe7932a85c0e2bf26a0fe931ca7975e21c96ff8f87085721105. 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/QZNWU2466092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279ba411f9f9e1cc8e6a67ca1dab52862d203881b02789a504ca1781a8c4fe51. 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/SE6HN2445387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40496a8539f74ebea1101a33d42c89d58a61c865d3f76da7ce05ddfe34a1f9f2. 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/SE6HN2433465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd879e0f9e6021d52107318c6641123953fab3755ffd93e555d4c859c57d56841. 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/SE5XG2405691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859731ccdffb3059c272a4472fe5e3f28fd8c9a2bc4ee4dd9d7af7dff4b179f8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE5752497755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f7f91f6761857eba32faaa10e54cbc21b56fa159964d618b5ccd2c5cf0295f. 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/QZK6H2425396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a2ee408fa87fb137e04ff9ba4c031e43d0616b0c43ef2f6513cf97262db0c3. 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/SE5752477457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba34af0c74c885d334ecf422617367dad9d6623486b2baca33754aeec874880. 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/SE5752411997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1118a19f912770d2297ce21e278130ea1f2a271784dec6187d75b025c0799278. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHN32486105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741bb3d007e9820b6a6dc8cfca1838161696105726c95a51d667ff4e84529534. 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/SE5BU2456295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd116e54f69a9e4c34a29c5776f4c978b4c8b81b0535432288f0f73ab6227168. 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/QZDA82472176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500d380b08c23cc2138c594321fd80f952e5714a38dcd0aedbca1bd7debf167c. 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/SE5BU2403572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd998dd7c79342405793831095c1719564bab499248f7412693b66ae917cf706b. 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/SE6SA2314614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7dbd943578f80d5da210c648e03f389eb20215c7f658f149da776c2be9df50. 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/SE6TI2310658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c969a4f1604892a5bfafaa7c185ccdea119dc4e321027417217c410741065aa. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE6TI2392133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cdb626e798eecfd6b73395039872b840ee534e2ded28b9e8434b459eb65fd3. 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/SE6TI2380781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3dacd2c95f4a37cd972cc3789dbb41a15a198f3fd0303d03b10c1a6d386544. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE6XW2353704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf19079e90f6f563bb35cdddcfbf0144d35cecc586dfdad86f6a0d11c7811c567. 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/SE6QE2341452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0605272d0c7b81f37fcb992e18b3c8835ea726c573f8a1db2c4c428bfabf972a. 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/SE6I32375854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfcbea03f7146f09056bfd7f26fa31d1564df4dfbc207cea11f5991b395114f. 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/SE6I32345685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930e78b57d72231a7ce67132227c3328f20ee46fe4b2581e723f3fe1f3a38c0c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SE6I32324473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2573230acdb571993945175a1cd3ad2effd75bc17861940d43d4bbdccbd79fa. 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/SE5752392592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1f1f26b34634a43aedc0832622ec902bde05785f8a5b1df367735887377493. 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/SE6QE2455436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3163f1dd2183817b929fff5b9fbf553d08cfc3296e61acd18e03484fe9a82f96. 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/SE62M2290660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86d4951ee0626ecd5170a4c67105ff9515d1d500eb304286154fc618ec69cfb. 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/SE5752358315.