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 0x3b7e4296f426d77f3ecaafa6444d6f2cfa9f11d534d0d4c9220ff3226cff4203. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48a39bbd-231c-440a-ac58-7218bb820234.json and https://artists.proofprofile.net/proofs/artist/48a39bbd-231c-440a-ac58-7218bb820234.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 0x330c08dda88d9c054b43630b6b2cfc6cd5747c7ca389dfcd03ce1fcf1d816ea2. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:46:23Z), 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/QZMEQ2093031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5678125bf0193db9522959de716df9ced3b25c238230c2c048fdaed68fb3e01. 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/QZMEQ2093034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d140ab82835374c10ed7fb46a8b0b32a493388813f5d23f520cf4131e8e7ce2. 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/QZMER2030752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c9cda1db04d30c0cff9a161473a9707083ee1c85c93510511ebca47d60322a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZNWS2070290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4974e930e6d618e28cfd9ce1ac6bcd9dbdc58d1f8ea0cb607638a58ad301fb04. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:47:53Z), 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/QZNWS2070295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08452b2ca9db14a762ae5367df54a4321695d039a422b1440482a182952c0fe6. 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/QZNWS2070297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e4f64f5d1bfc85585a7e0182dd18b9ba3d54bbf247ffc7b568a2b6ceea3f06. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:48:41Z), 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/QZNWS2070298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399e7c9ba8e6b9e6e792fdbcc6ab8b0b4c428d534d2674e3d5016d0bb577e09e. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZNWZ2124702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad33164adc4f8a911a778dfe2f2d420b0fd0c4497f601697b9ef29b8ef4b049. 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/QZNWZ2124704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0b3a8ad51fa1b1bc9ace92dd450c032b2aeda5baf29a1802446dba255b5f70. 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/QZNWZ2124705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbc8ef66c3a03a6734dfe7ab7042bc2b0e0e0b720c051cb9755ba1886c0eda1. 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/QZNWZ2145253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a6a2cce5ae794ceb7b95195dabd6e2e031070115d242c70295ac6d67bdcba4. 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/QZNWZ2145254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06976492cd0b1a994ed88ab0d7df697209af753723622f4795b633b703d155ef. 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/QZNWZ2145255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a76b0d50fc69e242d08fb11983103013c00523a452e6b029b7afa14e71d8a9. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:45:14Z), 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/QZNWZ2145259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76974d54646afcb809d9a1597130f9cc070890db7e83c31e0445ed8a95d110e0. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZNWZ2145261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362d60a0c2b9ddc978b99eb3cdfd335080a653b313c5c28c4abf48f06073a15c. 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/QZNWX2397934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d7fb01e937a8dddd4594a8818dbdf7e1e6592a7955a23313302e32772b470a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN92115098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda78d191959ab46f3d3642a5027d0b8c8ec78392436a4be43753649e438ef530. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:39Z), 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/QZK6N2462184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899554aa18534124562ea77583a20cd311b56839191b94ef763d6d092a6790eb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6N2462185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897e18bb89634b625d5cf3a51b2bb234cc96927f32070d2bf7f3be2b35cad469. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZK6N2462188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb68201ad99e242502497365b40fc34f786acd90596d29ea2437d50619361751. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZK6N2462192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33dcb48a9cc9c9f3ba3715d6950031efc936925a0f96e2b2276b34ee65aae7f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNWR2506021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55eb6074dd28d85a5b325559d69f9363381671fa91078efa4626d83407a692e5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:48:40Z), 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/QZWFG2541950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d7f8fab340c472d9cbbf894c4643083b6b6a5d1a6b8a83f19ad5f3190a466f. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZWFL2527441.