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 0xc8e7ec3b4248c3e3daaab0c7820f64ae82a8b8635a7b8a77e419b813414bb020. 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/589c5167-8dc4-45a9-868a-92d530bffd4e.json and https://artists.proofprofile.net/proofs/artist/589c5167-8dc4-45a9-868a-92d530bffd4e.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 0x7013e21725f3d75a228cbd0c96e527bebb24ee933ea966b050850f5cb4115e26. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZHN52505403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fccae183bee60beda64fe3b5b9c77cca0c4888bd9b1dd80c6c824044e112aaf. 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/QZHN52505385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107d052e5f6ecd862bfd653847b10fe8c69f49ca3680fa70afbb938eb9cedd73. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHN52505380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ca0af9f074a555a896ce402efbf2b5fb41864822bb02f05c0149f0732c1a9f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZHN52505383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7b642d0abe2abd970259d7dcf5386e47c3490f964a62265ded416d5f67b36e. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/SEYOK2230157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c79792d53a0ae1a99b085b70ba8397a21a2711b47fe3e355fafd76f55f3816. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SEYOK1867854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5153b49f550157079d0c3ca96ea3dafe7106aa4524c587c825964d4f6e3788d. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/SEYOK1930161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5682374e90e9c143ebd35f7947a8e33dbc87a28bf3da191f3f9e1b54fb0c22ed. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SEYOK2010088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36af4d73cb8ef071ca39d978064d0b7d6cdd335a01a42d42fcf56b797f68a735. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:08:40Z), 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/SEYOK2037384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eae7c6d312803d7a6ac521990bcf9882d52ceb231189a14ccd1240a6c0aa306. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/SEYOK2056268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee885458fbedb7c5923fdf8c4c543b2edf0782ee6e35388fbc7477cd67f1b88. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SEYOK2201373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c58abea837b2451a650d7dcd09a46207f63ee0ca9aabf2b7f8da354de111a8d. 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/SEYOK2213735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd57bbf0e0261078cb2071b199efe81576bea1acd0f83f730f6edc208913c282. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SEYOK2226080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86d3ae7e262a0a35022f95fd9e6e35dd9e6d6a7f0cd2de4d61e1aa68f8fc652. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:38:35Z), 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/QZHN52505376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0967f69f9ea34e9c70df46c51f1f132ff4f1f598673a16a1c9ebf7af9995af. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:43:38Z), 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/QZHN52505377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6e9e87acb7b8af3da9f3999d3909a9bcac26aec22def71d2d0112f243049ae. 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/QZHN52505378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107d052e5f6ecd862bfd653847b10fe8c69f49ca3680fa70afbb938eb9cedd73. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZHN52505380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897f734eedbdd5eae4124642cdf333dc95118435434a31fb4532fc37fe741dd4. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:32:25Z), 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/QZHN52505381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3952fa9b4de21b64798baa60700b86f2096b4cc2f69173b137a80969ef52a1fa. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:12:40Z), 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/QZHN52505382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ca0af9f074a555a896ce402efbf2b5fb41864822bb02f05c0149f0732c1a9f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHN52505383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fccae183bee60beda64fe3b5b9c77cca0c4888bd9b1dd80c6c824044e112aaf. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZHN52505385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1fc8985b78a1154bec2e8f21a25008dcfc55a0b21365a714e53c6357bda431. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZHN52505386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8dda03d47a131b5f7945b74f46626ca7edf0d5d1f488406b7bc4e0b1f0816f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:14:40Z), 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/QZHN52505387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a0490e393dbc9802f59256cb4c796f4daf376da3c64f635cea466a2e9e9c05. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:07:42Z), 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/QZHN52505391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb076ca61574cbd671160001cba0a122321f74abd2502ddf028304ef1ea45b54a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN52505394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb787eda4f4b26a1591994cdd26338af4207233907b29735d8fa8688e4867a09c. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZHN52505399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51289759729d461309761d576f6a72d354133f526a43c3c917ac2a1fcaa7bd77. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZHN52505404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0cebea68e394af90e7ce6ae8b8de384e2e01dbb4f56fd1cdc77c430a3b6bd8. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZHN52505405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854e2c2cc8212791289ad58c85daabe72cbfec9bad5da14002ca14c43421faf3. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:53:31Z), 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/QZHN52505408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22daaee2d919e4ce023216f3d7f6616a81521d494ef9beafabe68c234c4c7bfc. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZHN52505410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb027690457c14680a63f28d23e332a0ada4d4159ff4b46bcb9e934aae3c72a. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/SEYOK2328812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216c70f9a470cb86e93c3790d933a20f2852ee67c4f49c405e55b5c7cab4fc33. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZNWT2577908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b5e0241a96b74973b822d5a5887b2d59184fa993e97f2fd7eb6282d46d2dda. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:41Z), 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/QZHN52505409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6071c0178dfd7a0d97f4e7af42792f5d48f1ac999f26ea1356090fad22fd50. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:24Z), 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/QZHN52505402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9801798aa64b9ab7c83b99a9b7d3eaaa502673ecb28a8c729b09e085448f4fe4. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SEYOK2335747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0e49175310ad1ceef41dc4e41fcf14198a58cd1006fb660a9e7cae17ba839b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3FD2523011.