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 0x543d45997c31fde470e426c615b7f6669fc738efb3c9d1e70a799f2409de2b95. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35581326-ae9c-402c-b653-1e23ab3fc32d.json and https://artists.proofprofile.net/proofs/artist/35581326-ae9c-402c-b653-1e23ab3fc32d.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 0x7d7bcab547766e0ff9fab7266c08dc19c4db02fee207709424f980a61527fb33. 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/QZTPX2493436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49145aa8c97397cb2d9bae326a14e84765bd2bd934e50d73c7efb5da2cb51612. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZTPX2493437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97def9f5926bddf7fd024f227ac74d1fca03941a3a9f1e118aa99b4587ecee4. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:38:11Z), 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/QZTPX2493438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd789f62943153d47d164b53d77d6474bd7f2a0aa1cf2fd7b1016ac15f95a45e2. 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/QZTPX2493439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a21f6e31aef52b1698f2f30abc581d5263f425142d3d39413a592f0445244bc. 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/QZTPX2493440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e9b24f61ebd85116d1be87439395c46f844c03d19ff5610a69243516bb8ec9. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZTPX2493390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951502641bc7e0bace0591ba0e1558a2fa8b12f18b4c0ac1317483f2c05016cc. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:00:46Z), 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/QZTPX2493391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3922c213213e1c0240de603b4cdcb1d1f8ba76aa58b60ceb9439740ecffd906f. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:29:56Z), 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/QZTPX2493392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d371fef57c91af0d2d6ce182e870e4a9e14ba662910a5738458e53a7e127a85. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZTPX2493393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf6f66da8f2ae03f20007a647090223d32feef7dcf83bed0fbed98edf2ef846. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZTPX2493394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cbf0a45b223cec78de7595a0d720c1ec61086c9508af86db1f31c9156924bd. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZTPX2493376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914f6566e7244c29fe1b84ca43dbce5da27370c6461bb0018e772d11b633d56e. 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/QZTPX2493377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddc68ca55ef65ada601a0f8c1b676d97f8bbd7ac73d798ea8aecacd25d133c6. 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/QZTPX2493378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76982231212d8cc7aa740b9f16f7f1c02fc926b03329e794682d03e23af9a9e8. 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/QZTPX2493379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1322deb7f55bc0987b78078aa944a243c604ab7224aceed30330150f23d85f9. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZTPX2493380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde91106ffc8474557c0ae5a4e12ff956769715fb02a34249267a80fc9a38ddd. 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/QZTPX2493353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebd6ff2badd53c92c2e43295f73c8ff57ef63ee3a8a287ccb90e2bb7db0b777. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:49:27Z), 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/QZTPX2493354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5b87012ae4c43af34a5e8098631dbdc0dac703248042a3479568d846bc328e. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:06:27Z), 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/QZTPX2493355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3963b775c9ce400426fc9f541cdde0d93d89a6f31ae16b6cc1317676554f3a10. 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/QZTPX2493356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c521cc6673c3328dce2ab22c79ec01367ae05b037e025b369f39f3166e06421. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:10:21Z), 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/QZTPX2493357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d94f67d8fbe981b8309b8828b54b8d3f6bb2675666be27d729b93b8d558c24. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:45:25Z), 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/QZW9K2416359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16da8e7e989984f129e288d67f2571084247c504f91938c094b8b38f0a436b09. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:00:28Z), 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/QZW9K2416360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe92441fcf5c9fe3f8eb7c2fc110b132dcaae8166b2de41bde424679b39509e. 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/QZW9K2416361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0fa244773dca60f46d7d93084d6e710bbeec3cc975806dfce4db453a17a938. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZW9K2416362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967f5260f05ae0f381f1a28e79fdc3c510b2ec1fdfa5dc3c49b64a0c088512e2. 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/QZW9K2416363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4348eab5f6ca64ed83015138cc4b9ce31c7247998f3a14d9f1100b57d52b1ca. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZW9K2416364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb752372177cd2ee638b0b81cb76034b3024bbcc629c1426d4303ade75737be94. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:44:48Z), 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/QZW9K2470642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb702af713ccf3e7292da669ee18b5bbddcea0c5fe43f1d119cf15814bb0cce99. 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/QZW9K2470643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e79c7c25a8c80849a7cca669ed33f9344ecc83baa504eb525ed1ac2c59ce936. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:46:27Z), 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/QZW9K2470644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60eb22ebb4ebb4d48285fd1d4be047072a527d68c271816463bc6075b7fc139. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZW9K2470645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e294024f4b82e43916fb33ecd4a39030174f81918d71608d9ee5269159a26b. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZW9K2470646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46aefad98ddd917a09570e56d7a71a80c9a59ab8791072967f3748c88be69df4. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:35:26Z), 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/QZW9K2471392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732bee6b21f9155674247d9d1eca17f20295c1f3f882f94c91dd24855edb0c6c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZW9K2471393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c79dfdda339aa3a1b16371e7960333aeb06ddd25c924dc8fb6f318e4268d83f. 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/QZW9K2471394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc9e48aec59fe3629c4bc3df1e0c1bd024d00ecbdeb63b4ce81465ab11e125d. 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/QZW9K2471395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f9dfea1dfd7306ff50351949098e64d73343dcfa704205b0858ea425d81d38. 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/QZW9K2471396.