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 0x2c284c93df0a080ac087b0db930edbefa1baa888221b2c3a1ebbcd1b98241dc6. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd3fe319-20d2-4e01-a4bb-391eccce370c.json and https://artists.proofprofile.net/proofs/artist/cd3fe319-20d2-4e01-a4bb-391eccce370c.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 0x86c356f65b67e7853fd458c0f6adfc423ccb739347df92155c06cfba6e1d3643. 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/QZGLM2520795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd727c689377ee7fe1aa9b2ef2d4edefdd7e0ccf72f06ec49f32c728a54713630. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZGLM2520796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x953730c23218873fd826fa546760b06908c379e96df02eae3a6390ed43a429fe. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZGLM2520797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9b6e185d114cef2afced6d42f7907ab7fb06b471cfaa762c6cd08949f8f4d0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZGLM2520798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1f60f234394ac92738c56da48bb184cfd7a78f5a54725ba27abb6e85066c36. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZGLM2520799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8baa4c6b6f1347b1eced16f001e7c82b7cc6fe86c7024c9c8012c684b81661. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZGLM2520800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3ce07e1114616b57526c62bf9c24374b4fe86f047919b6d9574f3b20f0043a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZGLM2520801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0f4c434e2c200bc185bc616804533fc26864fe7734ffad7b769adda38911b6. 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/QZGLM2520802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eccaa196086d104b0a710ddba9b8f00decebbd97755d97c358703b64a0ce29d. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZGLM2520803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fd94dc79fe333b56c34b671eeb07a848721fa863ec329e480ae621a682b89f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZGLM2520804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ed18822ae4eff6a61aa05911c2d0c366744428b721a66a13b77367effc03d4. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZGLM2520805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d60afb55f1eb24ff36b4e01a1a0384d25b28cf1147c318e03627e9630e7fe6. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZGLM2520806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8eb1215c0f377af3c5ccd18e4ce758d8913db514c0cfe9c36ecd02e6d25770e. 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/QZGLM2520807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f4defbaacc4ad95ed855bafbfd39a290e40a971448f3399b292069d92a76e5. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZGLM2520808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eca2a588afd894d187d4bd50f97c0c39fdddf4301c5394cca2f81cc4a43bbce. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:39:09Z), 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/QZGLM2599022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6840a156f344c176cdf5cee99d2b76dff732ed6126739d623fc82edb2e2340. 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/QZGLM2599023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bc00dd1b28ca13d40841fa7794cb64f77f2ddf049cf8d9681f44eb5ee546eb. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZGLM2599024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ce7aa0af94b6c98b70f357a9ad327def8c9e095aa6b82677c9e6702926548b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:15:41Z), 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/QZGLM2599025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf03f71799103dc487d31df2156c6b606e93b1e78eae6cd8fc9783bb901de1a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:58:10Z), 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/QZGLM2599026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53739c9fff822f9fdbdb41161b0ba6ffe31c47b4fecee25fa34a302b54dac022. 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/QZGLM2599027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4f2fe25dfab174a79af6438737ff18fe25eb655b2fe009e4d613ba7c8c81cc. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:59:50Z), 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/QZGLM2599028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc4c37440ac8067a596bf075c2eaed1cddb7a5d910c6e162043b0928f4cd351. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:28:00Z), 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/USDY42598001.