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 0xde61d8d1ba79bd021e84ecfe2985deaa74568aefaf9c3c9204c786a489660300. 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/50ccb7b9-5567-4407-98eb-190e4c4bd08e.json and https://artists.proofprofile.net/proofs/artist/50ccb7b9-5567-4407-98eb-190e4c4bd08e.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 0x63c10c5e92678367d0f28a293dc4157b86736ca571b14fa9f1332b4567d85352. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:13:30Z), 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/TCAHI2382143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba4801e03f69fbda624d03e19ca40ac2cadf0d4a0f3b14f3556b85910149766. 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/TCAHI2382147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03423c52ecb2d238e690bce7996eb85220d04bb4c8789ed5eb13c121ee1cd64. 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/TCAHI2382150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7cdbabaeae78c1cc7d453940bc2f70c62ebbd95a498feb3d3ab6fa0f0fab497. 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/TCAHI2382154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bf32b2daa793cd6b9edf5b11a2e381891527c83483bc4385139fbab3be2b07. 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/TCAHI2382156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386e83b934e17c9993cd745b03e240702c45a2dd0d6618a345fd8cc17902aa67. 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/TCAHI2382161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d0af66ad6acb557b560a9dddc804d73c07388b7a57a27cb5df9c2d27fa674d. 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/TCAHI2382166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaee45fa67faa533a3aff9581cf4d79f818fa15fb97b9b60c8a12a2fc62abcbd. 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/TCAHI2382168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0d4e0b6c77626d0c11a122c2353f81065ec6c4f0a64817bcfb057d6e3ec343. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAHI2382176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2687962023ffcd05ca9d2af94e7fc8743c744f96a6cb9361be5b9ed47eb9a80e. 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/TCAHI2382179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ce2f143a055d6950c63bb533ca15c841710d9fa7803007fed881d96818179f. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAHI2382186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150ca486d404987b767ca4b4ec17f51ff3926523a1556aa333c1927f4ce840a2. 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/TCAHI2382188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe418bb48e062264c5110d45696a2fb42fd43d1c956b0aac0b73e02bfae3b914. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAHK2357360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7354f69e46f726d6139794588d1e482cc0071edf6e1af23fa2a10083fa4a7c54. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAHK2357394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a7e7b1ea9e6291abaff87bc784f644467770784d55c30fb87ea6449e701209. 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/TCAHL2365178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50142716f67c0093c874aa7d0013de90ec1d5eab9e0889ff18b6cda3f54b74b. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/TCAHL2365061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e0e2c3afa8019be378da16898b88c16aa3948425376af524dabf0af3dd3402. 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/TCAHO2362299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2dcbaafd2f18e78ebfe3e6aeb2affcff3c9d4032951167487951a721992f2d4. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:59:42Z), 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/TCAHO2362300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3a092654d4b724558c000ce0e11ef13c743b042097f46edb353d36b4cb5ad8. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:04:58Z), 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/TCAHO2362303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc71f1022ec57b881cb572580b771b1f502c152d5ad3e97a917cef959c0f4c5. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAHO2362309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedaa2750b84af95aee8e757b64e6d9aeb365dc89b0b4dfc590491b44bcc4df7c. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/TCAHO2362312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad05375a6b492aa6084398d601d6d7662efcfc462f958649902c7f6e861ea8e. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAHO2362314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e693ccc2e54cfb64adfbe906641d2a54f297c0feb59a7e9abcc46a5819f7499. 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/TCAHO2362321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a7dfdf94bc76d229b45a970e839bcaf591dacc94e6a2c4584d3063da1d0567. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/TCAHO2362325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311f72185fdcddebe1eb8628cd77f6150383596a2c4b142166b95024b9868ecb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAHO2362335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dcd2e5d836a35fd0b3e2824035aca0924c5f6f7076a2fdea551cd26d84f09b. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAHO2362339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f876d77714aab0c27813ed00b6a8e54948cdc0e7a98ebfd4ffaf3d90743036b. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAHO2362341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea228cccf9009ce046f27cf2973e665a7a704a3c4c314382521a4005cff8b25. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAHW2443602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eea15d8118697fa091e7fc530ea5d99ac3c3111439f6c41ec9384da77c6f99. 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/TCAHW2443664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d26c059ee2164531057f078aebc9718137e13470fa142a1da22ae2b34a88275. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAHW2443618.