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 0xddbfe1fbfa5311ff35052f747ee4b649cb27e51e907dcfd1bd0443128820d7a5. 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/1199070a-eea0-4b87-abaf-0708b25f90d7.json and https://artists.proofprofile.net/proofs/artist/1199070a-eea0-4b87-abaf-0708b25f90d7.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 0x82c23a766194fca18815302c1a0a464d3dfa412a95eddff6caa4b6fd4e023671. 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/QMDA72347859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad68462edb51bb3447c3c2142cb367db91835b1d5b6343c2691bcd4a0cf63fb. 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/QMDA62327998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876ee7c302a9456dc4b40f76e422e67118f20c1b25463ea81fbae391f4f132b9. 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/ES64E2303917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8829aaabc16ea78dcc96608711bbd72a145488e450ee243e920f035ca41118. 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/ES64E2303795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564b416bc5f783930e4074a2a20eccf9f641d93ccbaf13864a65be7afbfe9687. 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/ES64E2205885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a7c22d233be85e11bf78f39f1990b76259d691fbd1ec94ec6fa439aa4f4484. 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/QZK6P2242645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9f45979e56fdad83f51efe4e20155eea05f0de0f6c2b667f4aa1f6927fd2fd. 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/QZDA42235886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9066bb6a2f5c3aa14e8d1b06572aa1895aa9c914ddc243769dcd14f627a5fd. 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/QZTAT2195450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364219c6a3a3989117d2101373bdf277a4669f3b85c1371f2c5af2f6c95e512d. 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/QZFYX2125903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e286ab390db2ce23161eaa46eb6169accdac61c2c5e506115d3c5d51bcb5b41. 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/QM4TX2511657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bca1a92c6e8c246e8497163322106a702c5ebe6453588d1d8c7ff1080889a5. 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/QM6N22405921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf325060f287ad852302b287ae77c4017f62d5c7d9521049f31d1d46f281d387f. 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/QZHN52416745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7010e663a2fb287ceca9b023e46ba106d51ed5fbae2f29e896840ed42e816b7c. 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/QM4TW2401731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc996b0f6516ec6dbcf76a23e712ad808e9ac5fe02c55a4ccfb82d2cf00cb70ca. 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/QM4TW2401554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0962dc1df81dc5b00efa145b040d45850a219411d5446ec22bb293f5af262a20. 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/QM4TW2401742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eceb6da543d3b1ad48454376845a7a0e7b5ccc4bf5a695ac974d7478127d968. 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/QM4TW2401749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7a7ed9d0a42e9a2877f8fe225f294f5ed5e1bce3f67c19b10d4275f9c88b22. 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/QM4TW2401523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc996b0f6516ec6dbcf76a23e712ad808e9ac5fe02c55a4ccfb82d2cf00cb70ca. 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/QM4TW2401554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7a7ed9d0a42e9a2877f8fe225f294f5ed5e1bce3f67c19b10d4275f9c88b22. 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/QM4TW2401523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf14c8600c5199ca4348b0250702a242a4aa6d19fcbf0348b31a83ce93e8d02c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QMFME2353227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad68462edb51bb3447c3c2142cb367db91835b1d5b6343c2691bcd4a0cf63fb. 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/QMDA62327998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0249bf82e1125343734cc9b5db3ccca752f8281aab6cbb7b8847a3230ce70ec2. 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/QMDA62327948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8829aaabc16ea78dcc96608711bbd72a145488e450ee243e920f035ca41118. 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/ES64E2303795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9cf9e70a3c826e8cea368f705b2484ff9c84f02f8813dadd437be7a0122b6d. 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/ES64E2301516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a7c22d233be85e11bf78f39f1990b76259d691fbd1ec94ec6fa439aa4f4484. 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/QZK6P2242645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8194157b9a0241bd32a104bb9aa06c5d974be3be6abb49df8095fba9ccea5910. 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/ES64E2204378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9674312ce11069e99f5b124810132c2926d96820c9b600f5b67e772869aeac. 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/ES64E2205884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564b416bc5f783930e4074a2a20eccf9f641d93ccbaf13864a65be7afbfe9687. 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/ES64E2205885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9f45979e56fdad83f51efe4e20155eea05f0de0f6c2b667f4aa1f6927fd2fd. 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/QZDA42235886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8d2d9f8ac98ddf26c4c568f1213673c70222fff5edc73b81fbe2838ed213e8. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZHNA2190787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad07d388e37f89663d48265a59e984cd6da326c3e2f5e00a51ccd8727d01f8b1. 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/QZES72198003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c1692a27055de687e8cc3a83e4c6eb9e1c6ddf3ab2d33124eb3c8042dbb074. 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/QZFYW2115628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4390211b8df567cfac5d8993c700940888a91557948e1f090850633fb94e7cf. 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/QZHNC2089880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fa4db6a04dba666e4bd64c6618fb56d741a1bfff0162438807829feee1d28d. 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/QM6MZ2405253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3425eeda15434090cbb4d676e163b375de9f8a0b22ccf628649d52fd028379. 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/QM6MZ2405255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e37ff3786cbd6c45ac8ce9b15851e8cde5d5ce3ca4caff5aaf89bbae78b323. 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/QM6MZ2405257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a465e3141fc037735e4b68e09ecbf66a61933e179ea7e682aec8f139952f70e. 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/QM6MZ2405264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59fa9ba39235aa1e0aeadb51c07288a3c10747d27ce5fdd90d5c8fb85483440. 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/QM6N22533011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ade726efb3d49ccfd8430af8fc534d09d806a100ee4704134668bc5e3b6032. 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/QM6N22533207.