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 0x063ebda840c80e5e3226e32863655ec4f0e771df2fdde79cc7d18ba16efc763b. 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/f7047e66-4de2-40f3-9d46-c9d633fcb09c.json and https://artists.proofprofile.net/proofs/artist/f7047e66-4de2-40f3-9d46-c9d633fcb09c.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 0x9d8be0b47843bd5e71e1d39226e670ac1b3066de20055ba6e30965254998be79. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/DESH61900435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24196b2c194b57b6a677ddcb9e73db18d5d3be067af11fb53f666693d8c34c1b. 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/DEUE12175177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3939f4371e9c19a2e06a77b49f7d6e47ec7690945c426f2ebb57c911a26f70e2. 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/DEUE12175178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5b4a69a52bbf0b18dda529a25756aa6b32e70d924f9a9cbd80faf33400079e. 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/DEXO32264062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe787c16434c1cb1974f2a1d0a003dfd1bd0ffd371c3d1f7cf2f4abc74f6d517a. 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/DELL42300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88a5b69d7702dc8b714e391440057732d6be412bfdd01e20d34a99ee1f9bca5. 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/DELL42300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2445b1519593cacf89cf7523aef23637657013b026082310d73597778b99ea06. 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/DELL42300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e2cc4b5c5dff791c9278bbd66966e3cbed9c8fb4215b2a75da07560cf8bd23. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/DELL42300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd5f57405b53b1e803277c278bf523d0cd81c119219320bef84698e19e4e5b8. 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/DELL42300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e9e61410d26547104efa90b14f11bd50b6b90e59fdeeee10afb324235670b6. 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/DELL42300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a971896d1ac63d662ec8a442ec0143bc903408e947418fc89f1d81e11251405. 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/DELL42300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901be23a5ec7653e59c239dd183200639c4050cdd1fac15ac7e837e4077f805c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DELL42300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983f5751828e6d008833105f5758e39b86776f73fafc20284156d50a20bc513f. 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/DELL42300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd430e6fd3f9918d42a617a8cddb35d347ba2352ec0398daa1cad3172b073684c. 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/DELL42300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9785bdf8bae14924ab316a94ec412addbec85995b972ffde00ffb5bafe09ed4a. 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/DELL42300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643653e05355d730d912f432b86fab4b1d94e67f93bce5bd55eb97f954c9261b. 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/QM6MZ2443858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62f6d3d1b4831358c8f263d7145ded707fafa74a32a0076801666b4cf75eb8e. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QM6N22493176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87c338d57374f0c644ef87aff6bf33fbd3aadf24006372a55dd16fd9542768a. 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/QM6N22493187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x118973f744e66e5dd0684795e48fa400460f2a19155e6765ddf2b152dbc70b59. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/QMDA62440204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe787c16434c1cb1974f2a1d0a003dfd1bd0ffd371c3d1f7cf2f4abc74f6d517a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DELL42300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62f6d3d1b4831358c8f263d7145ded707fafa74a32a0076801666b4cf75eb8e. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:43:49Z), 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/QM6N22493176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa329e6b67efa91b0fdbbb0db0f144ff926951ef2f2f59e359bbbc2f74bead3. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QM4TX2551962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643653e05355d730d912f432b86fab4b1d94e67f93bce5bd55eb97f954c9261b. 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/QM6MZ2443858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf87c338d57374f0c644ef87aff6bf33fbd3aadf24006372a55dd16fd9542768a. 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/QM6N22493187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5186902d029bf57619bf35409f4ec9ee9ffba9cfea72c21a64fb558785da2b2. 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/QMFMG2371942.