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 0x203cca75580b447f7db020ccacf14db2bed463003d260982b4e5855bd3fe7292. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f54d609-54f9-4406-b1b8-defb110a8845.json and https://artists.proofprofile.net/proofs/artist/0f54d609-54f9-4406-b1b8-defb110a8845.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 0xa6d47b05809ab5a0b2b849f40733606f0707ab1d90b599e752f35b283c4c0ef8. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZN882531878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6700cc9e6166c3fdc15aaef0e1b7f4acadf963eba813d79dc7e8296c55bf236. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QZN882533065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cac31ad9e023b2ba60e41541b27e8e2185f73f36a86d20d2057aa82dcc46291. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:02:50Z), 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/QZN882533064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf659679f41ea5bb661a1b2ccc024b3540b585aae04e58f346141c65fa2806603. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZN882533063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06059ab70d74cee8f194a2f8fbacd93a044e7a0f04c5569097ebee0d1b650da0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZN882533057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16c5d14e0380b42e0e81bc0eb5ea05a155810715c8e259b0a1eac43b124ba5c. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:36:03Z), 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/QZN882533056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08772f5f79541961d3252cfa4947616d47a7afb2ade6a98d4ab5077b8b649f23. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZN882533055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65db99f2e744a5d8fbfcc135f0694a8cd3f6cd69257e5906c0e92b796fe4831f. 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/QZN882533054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6746eb864a2bb064e15ce066831f355dddf223c7932cc8e09a2328283f3434. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZQAY2599111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80137116cf35a9f8ee79963b6a448aa7dbb904c763d9f4540b84031bd05a095. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZLBC2414353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97033a32f8afe795e4854f5c9514a3b004243427622b4bdf587751746ac101f7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZLBC2414354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6612bb482cd4b971a13c7595c7dde619e2b3f607fa30d26aaddc8a6df68be018. 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/QZLBC2414355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fbe192bf0578301cf1a53f771836259859b3bf03c805460d9a541e40b22f16. 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/QZLBC2414357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcef7445dfa40da5aa00ae84f79a36e40479ac927d3e46929ce08df85a0dfdab3. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZLBC2414358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb4f3771eb1a412c04d5a61be8170cdc982f35a35a88416a9161eefa13bf55b. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZLBC2414360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d768d708b5bde5ffb78da5d09efc568f3e57240f183977d4061cb2996f45960. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CACWV2581968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7118785b0f8225f6be3aad8c854fba0bb5e018150749eaee7474426454d91fdd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CACWV2585214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649b12bffe67ac1de937c0e267ad1ef6388fa074e8a03f9e983534ff91ca0775. 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/CACWV2585215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4041dc608f5ffe9c9d533d8ab87f2cf177e3b0f8d3b7889a5a6e0ec92e6fa6. 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/CACWV2585217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda63f967c1f8d6557d59eb61662159b779fca631d3cc6e7f3d585ed36bb448f. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/CACWV2585219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453e62000c96298fd319d057894e8775c35d976b8793e97cafd8357af9de6ff5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CACWV2585220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6474b6973f8a4693df6a90379782c5d97d688382d5d36ee2161777d8b1612785. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CACWV2585222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2640b24eae04389b74304f22c92739689af22d574f2c6931b0e4b55ffc0d33e3. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CACWV2585229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3941ae1bc12e99d32cce52e08daa62c08ef4a39cc8e50895e7eeeb5e311a3660. 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/CACWV2585223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e0d5c595c7e7a929727d8c5413cead711746e176a8680d55f2d88ac59c42d1. 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/CACWV2585224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a5615797335ba75b472d08173d26aa382253fe045ad8e67f87070eb6549dac. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CACWV2585227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe154e4a978a59e49cf8ae8025aa59e9a8e48b9097c811ffea3db5599417b8852. 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/CACWV2585230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b94ee5da72e2dee415f363e891445d4f0b18dd09b152cb5f3640c6c4a6ddc27. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:48:43Z), 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/QT2VB2445293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb582db9c8b0964c3928babcced6b207165043e8486a0e28e4e7cc963d54ca11. 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/QZNJY2465690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c2ea46807dec12a7b7fef2654d76fd5ae688f8d2cea034ed657c4fa9b7def0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QT2VB2470622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6843d056735c0bc7fe5e36364717461304a25c2d481b114ecd311bc6190fec6. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QT2VB2439903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2990e2bb0e9f557c6f46415f1cb65f65ae1507b549c6654b933b806ec646cc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CAQOI2509377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c5fc3bfd1e1d4696ebc50e06295fe87234c2c2b3a2127c1177c48ab224394a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CAQOI2509378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f46aa29e54affac54f9c07ad65ecc237799527c3e36b15322bb3c3b02431a8. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNJW2509176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccbec893b04bd398fd2d238090fcf2862454d42589c20fc66139c2042cbe0c5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZS7J2572783.