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 0x9ad186b2a5b11f897667f0a4986e89d098586823e2302959f819866cfe4ed155. 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/07bb3d94-7e69-42b2-9bf3-02fd78abe88c.json and https://artists.proofprofile.net/proofs/artist/07bb3d94-7e69-42b2-9bf3-02fd78abe88c.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 0xbbc9d6be6f29bd64b0b64c428145f4ee26306d43ae1d7c9cb8603101878a8403. 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/USLD91751786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0512f8a313ce085c453e556557ada62ded7f92aebdc780709be2133564cca27. 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/QM24S2105494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7e93c80a4c16ecee0840db954132733eccd5647a48fb6510b799ce31a71448. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM72020442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e4a7f3e1d3c4a0b9ce88233ac83fbb7884cc620a66c466c25efc1bed0098f7. 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/USUM72010513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41c1d924141d59ec826d88595c287cb2325903e5fc034dde56e66a17dc36a05. 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/USUM71918838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89ab651177ebb2dbb01da2f60dff5ce30da1ec1a92ccfeb28f18755127606f0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM71918842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257567eab040320cc08a103af47d4ec00db4989de5abe2eff113eae3a7c74ea4. 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/USUM71918843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276601ba2adf7c04ef35718c71428aaa0182ddbe71c00ba93329f9f1b21fcf38. 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/USUM71918840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a223374f1504d4d760fe3e925f4b21f0de7ed2a588c805bc86adc3009039b3. 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/USUM71918841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadaa8efa7eb3974bf047072c5216462d8e204761612472cba79f653eb9f59dc. 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/USUM71918839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f07607485887b01166fde764eca10e58cfe006dc5510eee924def128777a6f4. 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/USUM71918844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcea64c67d2bcbd2c3d957ef4a872cf398e7ea7c3e25075653fe74eaefc37f7. 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/USUM71908349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15d47a38e08106818c798624bca3b799d934eaa4fc94ce7dcc8672e57721374. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZBEZ1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b733cea8f206e1bbc39a03149ff4ad2dd7a0fd9845da5d036de1e86e7cc1b7. 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/QZBEZ1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53fc6da48f96b49247bc5ee90bfc69044afca36491b9364078e4a6c89cba0a4. 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/QZBEZ1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3452a7bc6813a9b0cc4d2e3e2aa8b6e66422a6ca781504e9662bbe0fed6b1edf. 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/QZBEZ1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6bf155149af3513131babfadcd936d3c801fd8a8592bec7102c3aa3fc53132. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZBEZ1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc40036cbfc9c26cb4ea65f987aa5ec3de068fc8712861a8a5737820630fdc8e. 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/QZBEZ1800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973f9df48fd908e0b701cfefcd7c99ff93126b1f31e375536f274a525b0e4ff6. 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/QZBEZ1800014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d60fea6fcf0a56beec12286a11dc3ee709d888ec0c790a4d9461012027607c. 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/QZBEZ1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e093ac94ec0818550c64bbde6aef917144753074bd445a17298877ee9e04fb. 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/QZBEZ1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80de3e2cd1c081528e0150ca9a78497d400083fb91b1b325ac266f8b2c68fda2. 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/QZBEZ1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193de0dac086c15a67481373250b314c69eb66c65bc84507fecfd615f84f87ee. 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/QZBEZ1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4889c621d5cdb6acf7827711c6d7bb946a82b19e5f4fdba040d7c5b006418bdc. 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/QZBEZ1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b178641a85becc20b1059e7cf9450c02a75d441459e0904658f47b52881342. 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/QZBEZ1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c31b26e1bbafc750296e2053c619e48b954932534480ba544cf67ab2e9d1b7. 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/QZBEZ1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x904d2cef99e79192a602bb4105944efaecb50a625a2abe6880bca5d2de36c03d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCADK1706913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c78a2de9ed27de7241474e9939a30ee82be454641c5f67ae52f3906ec3d6e16. 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/TCADJ1739366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x648b33f8fdbbe8bf69293752783ed6b883913c09532ad4894d6eb3c9f87ee12e. 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/TCADJ1739292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa145d8c2ce5d5df25c91efb258d42da14d04dafc1ad57af697d9ec9b4394f4bc. 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/TCADJ1739246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056a23fe4ca535b5d058b31c8e99f8d070b0d61832f26dd0c1804ec6b9abf60a. 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/TCADJ1739151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0641c979672074d7dd36a2a5d4c6c03001e1571b1d73257ebc0b9b79a6bcdc. 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/TCACK1583200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f52e7fb35d9da04773c898a67a2a383f448d79062fcf8d110cc698f6e1e7e07. 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/QM24S2207064.