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 0x352f9e80757f2c39dfe4f9196e46e8bfb46e86cf88dfd093f9abd3e5b647c26d. 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/9cbbefb6-6df7-4fae-a124-2d0161ff21f8.json and https://artists.proofprofile.net/proofs/artist/9cbbefb6-6df7-4fae-a124-2d0161ff21f8.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 0x88c81aa3564a8056ba051ba04c78f95597acad611c82acd54a8de13479500808. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:36:12Z), 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/QZHN52217104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18cb8d5cf62de1cda0b51aad62f66c958a48198a4ec09f15b77373e003aafc9. 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/QZHN52216298.
A MESSAGE FROM A DEAD GIRL TO HER MOTHER
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6ce578264b7cb4ecbfd15e11549229ec46ded27db6dbc7a684ae37282d2587. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZHN52279179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccb5256752674cb9a0579689d064b3a3dd2f3dc55b4ccae71e797752ecd8e20. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:02:25Z), 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/QZHN52217103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2472bf9c9c91d393f75eae935b1eb4eedc1fa7b30ac8934e2ba68fe63a70ed59. 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/QZHN52279177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c5a90f2a2253cb60f265714a70c4487df65e3e51983db5301ba8665af2f303. 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/QZHN52277362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8383fb30c3515c0c77f227a46b28ebef86fbe3489f1ac58c50b465a9013fed01. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:57:59Z), 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/QZHN52217105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5375d153e2e3564f27e7e1f23fe89ddfe773cdbcd2fd41bb1a5f07be38cd43e. 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/QZHN52279205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669f7416dacf7a1c91974836064345da00b2362fd98a2775468ef656b09e1afc. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QZHN52279176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6e3895911d2f4a89ebd9c2d4c179caef246bc34c0f5aedc4d9b7bfc27bd378. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:55:13Z), 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/QZHN52279193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6eb725ca0971e2e976caf54782ee558375aed6e026e591edd0bde74b74a397. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZHN52216295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d3ffa98be9e81f4041dafef548ae8414c1c2cdd711f18a738335ee8f1162fc. 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/QZHN52279194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe25d3e1fbe4d3530633e23fcf63702dd0f2e370fb4036955d38cd72c3b78db4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:27:51Z), 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/QZHN52216302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704ac37478f3d8241f5dd26305d2c6feb84357c8c26bf89cf21e410e7fbbb41d. 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/QZHN52279175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9bbf96e8349ad44fff7d12d70075309f6ba27e4dbefcdfd61e4e6c9dde98e9. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:46:09Z), 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/QZHN52279190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fd58519610c0462a353384a8dab386416d5304f91b2c8552bcc485386dd3f0. 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/QZK6H2290212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171ffc5368c2da2815b5710ffd9f33b9643b7e2133d4f54bd1ac2757afa75d36. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:26:23Z), 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/QZK6H2291954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3590757ed46f6ef4fa994c8058cad301203e9f4abede69554aa796cdb6e783. 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/QZNWS2391411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde66a72e202ee7516ea306d6ea196f0ba720c0ccdaf54330e22f24c8beaa9676. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/QZRP42306265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a256bab8cf430fd3e4a68846b68aa66d92198275b0953cb86f28a878af440d0. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:49:59Z), 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/QZTBB2393133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddeffe5693047ef84157acaa1a742ad2e9e6b8fe5321d0752fd28b537c705f3. 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/QZDA62465868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9f4a8acb94092bab8b6535babfe1d023158750f779978c6a73f5cd2b50c4fa. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:44:55Z), 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/QZMEM2484815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c8a221baef0dafb0e97f3b90ca376d447ad57d398388afe83defdbc8923c42. 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/QZWFT2478774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3925d792b0747308d670346bb3707d72800e67b65dad9824ab7dfc204d706e. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/QZK6M2517155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca831e820e02eecad8dee1ca0a243c8cdc938770c9c7eba7d08276d2bd08c13. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-20T00:27:13Z), 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/QZHN52280995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07833be18335aabe4eccc24fd1a147117cc3345df414e0a666534bdf26316869. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:46:53Z), 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/QT3EZ2517472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb691c76c7e119a66295e845714d83c26fb1cb4d68609babce36ce0e5083f780. 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/QT3EZ2519998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f6591800039cd042f3b4a44033ce09d8ea5a92fb989153059fd6f6b41f543e. 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/QT3EZ2511138.