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 0xb78a1d80110573965c8a08c03b6fd77bc4856ef047e117697242879a558f13fd. 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/b33367b0-19a3-47e7-8204-cc3a28695bad.json and https://artists.proofprofile.net/proofs/artist/b33367b0-19a3-47e7-8204-cc3a28695bad.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 0x2b692322ca1545c1aa0fecf6ab402dd81c9207c27c458f4d769f06801da7e869. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GX3Q92098798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb780c87c860130bd2849177ec6fd61fbeef1522f59d2bde506863604deed4d2d. 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/GX3Q92098799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67d55c035050650ac875b5e69364dc472ab586f3f119a4e906af072e1ec6d45. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GX3Q92098800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2401f4d969f907c42d618d055320f3541f595bf617998790f20226153841df0d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GX3Q92098801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b00f477114a4f9bd9b2ddad74f92e16bbb98d1b8ba1151f10f7d2ca797ff034. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GX3Q92098802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23634a2f43195a879f427574e64c044969d3d0330851c38c001907ac6a80d383. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GX3Q92098803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09b06ca0f477bf506a3364ffac712b988940213dfc0822c66bc7e740834883e. 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/GX3Q92098804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb780c87c860130bd2849177ec6fd61fbeef1522f59d2bde506863604deed4d2d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GX3Q92098799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23634a2f43195a879f427574e64c044969d3d0330851c38c001907ac6a80d383. 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/GX3Q92098803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a1c8d4d59856bfa880f1d6760a77ad9f22280b1bcf8f53b9ac005b62c018338. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZNWS2270396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc382988e468e3db9bba85fd2b1f953a6203238ebf0378f1cc6f885bf24004986. 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/QZNWS2270398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057dd60183b7432ae5cc11e499d581634e552c84d37f6ec09d81d0d26cecbfff. 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/QZNWS2270399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1110faca78c3a4ca62ef448e23d1a006324e1020a48d67b088a135d8323e30a2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN92492976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe82567c04fcfa3a8ec57c10e5b1a7abee53e5dbfa2a0ce8e99695bcd5cc2d5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZFZ42427667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f2860e33dc01a92518aeedbedd7e44f9217519238ee0e6de43071ea1339a56. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTBE2327396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12f2dd2fb2df799cce5046c739cf76fcec099239aa58cf66ce38104eb2827de. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAT2330588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617f6de8464997919a61d7a77e61d00bcd3983edaca28d05564b1e58cccb2d98. 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/UKXN22257812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc202b573cc0a24778880a99e5d6942aa85f81cc5090dda1bf65ce253953e8bdc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLW3L2000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e95f01f5cffbf047dc767d2933764f01ba370c110cb44c4d49806392d115f6c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLW3L2000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0051358d8650615d79ff77a08a51fc5232a3dac8d4029505fd5054360a0d7eb5. 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/NLW3L2000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f56f241e647c147a2ee0f106a900a836ee137e1df3d1c089d5a7186d9dd63d. 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/NLW3L2000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60098225ed2007b4084a7a604af9cc70a16c5a5f777e239db873078d1c0a6a39. 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/NLW3L2000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36340cfc17e929fcd17b7465128db16e835bf7e5714407cb07255d7bd53bb133. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/QZTAU2119644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe0e2d07d6c0d5978688697e8637dc720a194416eb176ec394bd03fd03f10bb5. 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/QZK6F2301374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc666bb87d6c06a17d193c6eb2c8c46c32ebf15d45c365fba6fcf512d2a7741a0. 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/QZK6F2301375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65236c06caf02dc958e7b64ded97b376441dd010482786490b69184ea118a0d2. 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/QMFME2224132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b0c61d3d98700b6e902dcd0f4cc44fc9789ba34ce3c8034647e661bae47651. 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/NLW3L2000067.