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 0xc4fb7436dda5e594e6a2600a67f6e43d0341014e2c4af71ac3f0cedac2bdfb77. 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/6a676b7b-5304-4b5c-bdf4-db81b5391992.json and https://artists.proofprofile.net/proofs/artist/6a676b7b-5304-4b5c-bdf4-db81b5391992.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 0x432f6b784521ee8fbf39d11f8983516e3a014dd93553bce1b3254759333a8efe. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CAU940701002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa060f5905f49a1e33c12e000dc46311ed1e59c32aad4e8b5159a922ae3bd47d8. 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/CAU940701009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb6e79196af06ec84dcd7e4a89f38a5965e1ccb010734600a11de0963ea0c6d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:32:52Z), 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/CAU940701011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786105809c6e7a23b493036447efb41bd95856462562e543c2a9518fd33106f4. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USHM21252609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04c34ad96fb437c6a83f63e7a9f85b92c408ae8c9473905bb1cd849c7bf953c. 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/USHM21252610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec299985a6d06346a439e05b3bbde941d1ae551070dd1789a9c9ff1bcbf6a02. 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/USHM21252611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12755972f18fe56f46150f231df150581ba885d7d60e7ff7276526fffd4e6349. 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/USHM21252613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0812d4114b68b2c81661f183480724f212d0720cf290e6d778f35cae2d3a241. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FR9W11521843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795a2e54315221b435d7b9d642d4edc2608d502bcda37e34fc8795c93e4d09dd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR9W11521856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2270e16b67804eb5514330ab9d48c964c080ef9320e6811592535bc73aac2e43. 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/FR9W11521844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab255e5ecebe1e9463df7322b9ca084c194ff68944f1cd3f87912aedc3f8042. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR9W11521857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933c89312e815421d6028f81d466416ceab02456ecfdbd8d8273d3e39b84f930. 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/FR9W11521847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a07c4dd65456da5ee46f1b8276ffc923327c06ac12944f0dfca2ec9acb76c9c. 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/FR9W11521859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7f49ed027ae943036f582017ef2f0351b4234fd67a38de5840d6d249705209. 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/FR9W11521848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1baff9874a69d9100bc799f8c76f7df8638054e259a02a2e547b52b849045f54. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR9W11521851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc064faee38e3b088412a04f323e24679cd34aebd553fa7b5f312a491ba0b3042. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR9W11521852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b83757edf9f20c9c92638900c36a6308d4df472664877dae882677fadaffff9. 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/FR9W12122830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6264b77a5def7adea7b2b303a63d1b3efbdafdb76586fbca8b1442b0c94e2f7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR9W12122831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1788b0e0952e112ca5006de07f671f947723c249c816a4fe816d6d0043cec8. 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/FR9W12122832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfafa3f388684739252b873c7a37255dcf7797a7910286f85a4044b858cb61e0. 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/FR9W12122833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d748d181621dcb87339f1d54132d2897ba3d7ebd1e9f82bee3bc0982d7bcc5. 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/FR9W12122834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c52bb8e66cbe358a001a372319af21c139ccd31836a905e5d6946206b6fb77b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR9W12122836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83942102e69416fcd8cb4a512f1c34b973a5f111d2aea05051c3b2d301bc5542. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:16:42Z), 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/FR9W12122837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa903998be647137b6552535fc63cbb49e7af152f8b8bd2a85f4ca41289638fd5. 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/FR9W12423990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ddc99e0c31db597caacb53e7f56335c5ca12f4f8692fb85bd9b92b698729b9. 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/FR9W12423994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bd0f9050551b56e2e4b1725414dd0a227e803b3b562040318221fac6774ebb. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/FR9W12423987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4b7b15a9854fa6f6b21cc9de55c6f0324d957fc91638a3ac7443735ebfba63. 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/FR9W12423991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b65c5b3b638bf89b1bba5673ca0d84f0b829c626de1e12e74371c5184af4270. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:43:31Z), 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/FR9W12423989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eac777af67f12f86a82f846a90fef9724b16efe49747dc1b7c07c2dd1ae5747. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR9W12423988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e9e9a0fdcbcc98bee5f0d674ffd761ffd5b9eef7b7c1caa48a953807836112. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/FR9W12423993.