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 0x2859a56d7dbc7097173bad5057f850faa5ccdc9187d48289489c3ca29143055b. 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/10455cda-8d0d-48a6-8deb-442303046b62.json and https://artists.proofprofile.net/proofs/artist/10455cda-8d0d-48a6-8deb-442303046b62.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 0x99bdee0d0215a5268a7c22e8d0bb151b15e28e776aa188dcb448651c36515f2e. 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/QZK6K2493388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdee08dfa2bee15cd45e06d1ee5f946cbdec097481a1d5b998ad82ff877d5b2. 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/QZES62483752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6796ea09f469dda787c0e06e9a1340da74f94ff1c4c8dd029193023076012c7a. 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/QZQAY2428018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5203a23497c50121fd7d7adce8bf9aaf4ad490a627a48adc92055b14e6b0abbc. 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/USUYG1526850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2116748ca43ec10c6ced05d395434c1ba5b84eac3278b6f1cb0ffd80d00b409a. 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/QZS7J2397451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090e4271719ebce083ac4a7a24f97dcf9d09fc2e9ee0e06313730c03546269d4. 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/USUYG1500042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f2d04f2c3edb1224345c862543291ad42f3b4cefb31bdc4c111f3775717899. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUYG1485704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e1dc9c798f117e2d7bcfd75fe3b8cd700d99eb67171755f08dae2dac1bef98. 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/QM24S2301453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63f253ced379ada3f05c06a141f289d6542fc51bd7b9a4572a165fe6ac6d3ed. 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/QZES62341364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1891ee4436db68e5bf393b6e5ce711abd05a2a5f49a7e83eb5e96a5efbae30. 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/QM24S2207144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3860266795cb8dc7bb98926ed6946609950b141363d86ad493e102ac084c096c. 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/QZTB62274536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56695623bb6dde85cb12a42b30cfd085b91bde674d0b3327cc5629c87c612bb. 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/QZPLR2256565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b118e9ea1ef83458a88e8a7545fe9858b5de831e217d834085a2f2f9932ec1. 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/QZHN72238523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f1e8d8b96e3a90a07297ff74c00e61e6383674633003b3ec0cf7f93da281d8. 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/QZAKB2161700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x968127d7b056f61faf91645c086eb90a7c760d1f624274d31c12c32ef1fd8ce4. 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/QZDA62263714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d6f4008d7395bcf4dcdf372ed868fbb7a0fc78e690d32ecca1e5b2a2271129. 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/QMDA72188452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbaf349eefc964e58085a8943a3f8a3f2457c454e467daa02b86a5644c673e9. 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/QMDA62164837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212e9065f17959864210b21de4d7c7e731536f1ee80e7ecc6b38fa7a3543b427. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMDA62104780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf315ce0dd0c305007b023ed4f272b2710ea8473184c8d12bda51480db3a6ac14. 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/QZMEP2184289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6297091bb817157c676e498e24e2fe1738c214b73e39b396fab4eb95a2a8b1a4. 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/QMFME2178258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd294f0685616777962a56ab927e0e493c89a675f0f1e7f81e222a25b2b1d962. 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/QZK6J2159502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a0288a175ac44f57b180033f5f4219505939f3a7ec044dce28d18a23d0fbe9. 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/QMBZ92196898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b88a432f5280ff20fb66cac28209d6603e873974b8a8c237ca2815097a2f1d9. 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/QM6P42142014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972721b20e01ce0227dbf4f8d18977efe931238296d558fdbaeecaa62198f92d. 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/QM6N22166156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6dbcc4afada25d9f09a288d9d49184008d5c00fd3d231ecdaa0ff209ea08253. 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/QM6N22104583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029930b2a0ba8da9264df727df131e8f56201dc28daaa7548a379e1e7c02b6bd. 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/QM4TX2101653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801df93b737b59def07835c60fae5ca3f2caa3960554d9445922132dcc11e9f7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFZ42180763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee597d4b6298d7903aafde3150a58d5441330b797c4800da323cf10baf685aa0. 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/QM4TW2108482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621fa60c5c3513a11e351b3ad254ca86457c75a2f7bd246bb494a9b8bd02f13d. 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/QZNWS2033993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f82569c76dc428179180b9a0147b9841b8efef19cefd0e9da1ad83299b259b. 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/QM7282055052.