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 0xdfe36b071ad7438f36c30dc0db28f673162f6feb0ec999dd87dae61ec7a76658. 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/29169b69-ee9c-48f3-a31a-ae253a21ae42.json and https://artists.proofprofile.net/proofs/artist/29169b69-ee9c-48f3-a31a-ae253a21ae42.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 0xd61791c8a61ef424030278bae2b855393bae279b18b7bae78d69c58bba8917e9. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:59:28Z), 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/QM6P41751672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d087fade093c678ad6567ce32bba408f8670d33e76f56f00dfe2f7c6ae3459. 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/FR59R1922376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2938cb3958745b8d34c278201b054d98812be37d323c94be6249e76233f24243. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR96X2237496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c292a72b7429bce9bf5d5821e694b619bf7ffdb7b1fd37f148d7274e03be68. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FR96X2237492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a4b5c746c4a0fcfe76673ac5cbc906979ded7f8fedea9b547b9a8cf853d279. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:47:16Z), 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/FR96X2237510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2d85ce0915661a2c856ccb84190777fe49cf7448acffd4ac000710e8b3b93f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:10:46Z), 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/FR96X2269973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe302bfbad1993648aaa154d72058b03c4a409eebcef6f37c00ee90938b24b13f. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:10:02Z), 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/FRX202274294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bad4cfc0c0c40eef1a9e1487692963651485641892eabceac84895056efb68. 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/FRX282212758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd544545a6d750e0550c394ab45b0c8aa364802437e4752387ee61f9eff687f79. 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/FRX452206522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad64c7ed1e90e5d0907f3fb19d8f178354f8e1c53ca2e8e184f848c7f8627ddd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX452256001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f86f1cf6e8a96b12e89a76f44dae582aa655bb626cb3146eba938fe063f84e0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR2X42387970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08eee18e8236c899841a4efe03ed813817eecccb2c805bf8efacba85e82ba766. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR10S2358248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48b0c349f97c9a8a8eef1b915f5ea54f5bab6a3aa1478eb461155d5967b1455. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:36:21Z), 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/FR2X42362247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe166749124a003393cbf157f0fc089a10e772a3d3fa204a1c5a9f202b905977. 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/FRX202318659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef427d911183b6299b3851225039daf6e54adb7e66f070dc1f829d66564038b5. 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/FRX202318657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ced8b3f5b06838fa5ac314256fc92dc13cd74abb887dbca9b7d24ee973a017. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/FRX452303209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbaa3d5fa199c0f2ad932822f4d82721f1765ca5f30fa5d42c237fa0c6f8469f. 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/FRX762349208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3232253af695ba616c0bed42b62a15344dbdfac04789f52694efc8cc832af07b. 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/DGA052369497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e1793909681100989d8d6a08b05588397edf925fbc8023f218edc1f9ccc20e. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/DGA072374890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2aa768ca76e1bd0372d51d0445e5b7b1577c0fdb02a6443d972cae34a0a67fb. 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/DGA082348128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaea20fe0530fca49f738a866f1c39d77043f5f4c946170eea05cac18c80bcc4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DGA0M2382554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1883acbd064f971eca12e283f54dfedaffb8540a399b32506cd78e9c8d7333. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DGA0P2375188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc5df4d7bce7f5956291235a5908cf87abe45c733985bb2efaeb183ee11c4ca. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/DGA0Q2394596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7506b463e69ace7fa56eee0feaaabc24ff97b91b2843e922a915b5898c81ff4. 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/FR96X2414252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1218725fc77d0afd8dedaa737892c22b0789bd3c7212a193a3c0c93cd11fb261. 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/FRX282422852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72cf7be2e59e025d79eda6e2c4ee0e7de2b9412e2c561f108aadd8b6eb39e94. Chain 2 (Bitcoin): anchored in block 957665 (2026-07-12T06:13:49Z), 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/FRX762426102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59a0595db42fe98f95b43e628813956ad53c17ff1d444be54d63e387f1282ef. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DGA0M2492067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c4b13d6099ea03b95b774c0b905dc9bac7e6f1ea0ecc1dabda57d2a4695b92. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DGA0Q2421060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa73d4a21a4ce9ee53dbf0ef8056bbfe4445e012178ca4fd82ddad7c89cdceb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA0R2472810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffcfd9b2212d1671017ca176faa0a89636cdb61811fcd8757cda2d525b4f074. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRX282512583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x677b5de86f47b1e498200b20804b2d801e1d801ce76dab7b7e8a925b92d21445. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX452591600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5005c4268ed9804bf11da87bf4fcc4cd10eddccb5fd561c35982b14b3943d2. 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/FRX872547288.