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 0x2dce4fb028ca3a4cbb130b98498ae824d3e969670bb08f5fd67b19e41401b4c6. 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/b64093ae-bf67-4f35-b938-04c0003e513c.json and https://artists.proofprofile.net/proofs/artist/b64093ae-bf67-4f35-b938-04c0003e513c.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 0xd7d9f86e02ceabb13a9d803ce915242a57ebef84c7d671b5e19fa6676b37e6a1. 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/USCGH1835051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89bf74dcc548bfed9beda2b48e866839fe2c3ba3a537054c2852c8f9d750e14. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/USL4Q1843882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131938eed510e650ca39c8067ea9e939afc83777cec61ccdb3fecfcc01346fe3. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T14:55:59Z), 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/USCGJ1981609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393dd4d2b4c7c85c036ad090eaf8dd29fb064ed53cd1a6eea53df64780e880c5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USDY41991951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3ab55ec282b5a9e4562e24140c6c244238115f5b87d5d8f1a6256c316a4604. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USHM81918644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80055ba7142b322861cca55e022e9b0a3e76f5a36ac3e68c06dc4724023f29bd. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:49:55Z), 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/USHM81918645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8728a7fae67294de2478693d32a745d3316612b10431297ca8136ebfb1f53a4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USHM81918647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c38485cab516b26efe15d5637a4f8077c7202b3a95043b60a2154e482d286d7. 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/USHM81918648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31203df0c8de4e36ab15147ccef14db2679896db41a29e8c869a3ee1a418e842. 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/USHM81918649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab38724e787e22491b5973061b612012acb34742e5a04bdf26ddd6db08dbee1. 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/USHM81918650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bcb9b8c68b12d73070a847f233f6cd7a3ceffa5ec57eb1c5d8465fb415ec0c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:36:01Z), 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/USHM81918652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd68a752aa896654d1e0e9faddab9b504eac3a60a160190b197e2612fed08ad. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/USHM81918653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bef5ec6b7458b80c6a54ce6758fb9d78c9823a5170c22c4d48e845182d1e9db. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:40:03Z), 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/USHM81918654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0d1a08a16cdf75e597790885633a1ebd21623fc90ea47fd02de7906c117450. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM81918655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd5b23fb2e2314c1e7226176a68c8458a6c03cd5d2c6bd8e95ba30708590424. 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/USHM81918656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5605a4e138880dcc9d5a51f1fc8df5965505f4dd460def752f2e6b44eae71bd1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USHM81918657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3459b5a06602cbfa30ce1401b9eab6bba445ef93ee9802738d4d9cfcfaa4b216. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM81918658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15899ee84ce8db846bbd38808c73139c7f1a115631e82b06ae38456107da651a. 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/USHM91922092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c195bfc8a6bc0835dbb8933fc02c63f2a08ca20f0c2bc4b956547b06128712. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/USCGJ2015437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f0ef1f94a50e04e4c9c7ae5e573d2ec656ad9531665980888c0a09fe2ed44c. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZMER2008283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e60d410faca5ff79889fba4b960e3d432ab531be2cb22b745ff89cc4c8a448. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZNWV2059686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d927763465f7c47023e31aaeb6b19f245f6215df23da43f022b4e07693ffc4. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZFYY2166720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e820678671e0db410bf0c6b184bf46a86c644e8823ae7feaa029fb913b12f7e. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USHM22222194.