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 0x0e72b165ccb469c6f928c6decd07e8bed9bebfe8b3e9a6d55fa391d3433722cb. 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/31a642e0-1e9b-4472-bf48-2ecb330ca04a.json and https://artists.proofprofile.net/proofs/artist/31a642e0-1e9b-4472-bf48-2ecb330ca04a.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 0xba2b88a4d2e5672b6fbe27e8925a1e8f75a9b8f802b74d6c66f22004770321c3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACG1510751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2393e74351ab1b326d5846a221efc17e1ad638ca4876977dd6b35f0faf307bc. 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/DEG931701151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d54efc85c957913492d436f920831a65088ddddb3890f2ef24580fee8a7324a. 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/SE5ZV1801513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de10b77ef85517d4a66010e32820fc1df57fd9fd8db3cf53520ced33dca0f08. 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/QM6MZ1895186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb3cdd4ec1d429bfbec57b144561247803b506a3b773c535762dcfadbd6e7fa. 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/QM6MZ1895180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7b5aac2633fd51180a33c6685cc5828dc32169d74015caafe0e80d5a3871cc. 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/DEG931912187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ac4a42ae57b4a55cb4a8d4c00a4e351d124089defa1cfcdec23e2546577526. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/DEG931912189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25474143251f8cabb16e21bda200cc10b93ac02f6c0bde63f202d96567a86ace. 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/DELV42101286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe2b8e30900934a6e54e2d10064c742fe1bd53f59ce24112ef0aac354e6c9c6. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMDA72182459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18372d2355493d3de29fd6990d8af5acb70c734a909a498409fb4b274049aeec. 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/QM4TW2489253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4329632a58ba073a25f5364ab8e4dbbb2f1c8dbecb450f90e135892826f44194. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRIDO2511063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284e19e90e9647ca503735e182364524a822d38b49a3bf5f920a18784e0019ff. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FRIDO2598782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9d586e90dbe4bd9835ecee694c8b6300cdc1ef33f950f712425c5d53dd6ce5. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:30:15Z), 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/FRIDO2598781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa043cb6ff5aaa41e11baab03052a22f6b455cee219eba815998b83a1576d33. 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/FRIDO2599153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4329632a58ba073a25f5364ab8e4dbbb2f1c8dbecb450f90e135892826f44194. 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/FRIDO2511063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9d586e90dbe4bd9835ecee694c8b6300cdc1ef33f950f712425c5d53dd6ce5. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:28Z), 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/FRIDO2598781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91b4634e776d7877c577209a85c94769df59028e48a852263e92adea5737df4. 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/FRIDO2511069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fdba9c15b508b56d1e4c70452678a564f8ab60d9530294f420d9a72e62182d. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/FRIDO2511070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f41933f540446a1c90e954be6a389a4c5f6ea969da26b0e3ac8288dee70c76b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:53:17Z), 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/FRIDO2511072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708cc6e3ba8fa2fbb6b9180c17ada9d8c018cf338f5f1c58204f267dae8ae761. 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/FRIDO2598780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1005c217e8169a8aa486371e3c007868bdf7c1cbd99f4d25765a42b4191055. 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/GBWMY2500620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b8ca824af17f948865a23e8a09aa2d9d8647c331f55c6c85afaf17c7661942. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM81723999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3e076b89ae9c3dd6e984fcbaf328b54649b0578c389d3f1428791b55796789. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USHM81724002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43c5fc8e4a9c7f4284c5c7dd2f200e7e6e71b5736e529b2a6c4a7cdd0008ffa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM81724003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006bd76402250236f56fe2004d441422cc72cc5954795968d7291b950e740ce5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM81724005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0350a71e0528d8286915bb364ec07e453eb45b877a5da58ca590b893864af45. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USHM81724009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64a4e0a525b16425af95088b4b0325feb63992f3da8207443d9cb19d5230dfb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USHM81724010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebdd56d9143159e6365c203faf487bbeec7a183c9a7ab5d161fb764700c1752. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USL4Q1713389.