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 0x282e41e6a71eba1e187eae6ff8d1822d40c71a8c9c0f85aeabf0edbc94d5865a. 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/fd368311-d137-4681-85b4-db6d781ca62f.json and https://artists.proofprofile.net/proofs/artist/fd368311-d137-4681-85b4-db6d781ca62f.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 0x395c3873a27d98452dfd8e1747c31444c3caa9bf24e623ccc72b2d78a8b403cc. 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/FR9DT1900270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2b6fc642d37adbbc327095a23aa1e717f1a202a9e48888824b68cce0f78ee5. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FR9DT2000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecc628a03091e40b0a089b8df7895959ffb70babadd1f37de4be5f638d9beac. 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/FR9DT2000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c43f77cb5e155e91f79b56819a4fc93c4bde3c137d22b4585df446ab17037d1. 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/FR9DT2000570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2092616fe9b67bb4f9b95724734716a0d0cc888d706473431df04acab72350b. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:14:21Z), 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/FR9DT2000580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9787cc144299930534751079c5472f9db73f24e995aace2ac34eef0ea136e2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR9DT2000590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9019a7f0ea60352237a810f36db7d44cfab9b28bdbdc595e2f3e15f280427c6f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR9DT2200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8440b7c0d0ded5f9d7e9d892914222638e06f8c66062ffe820878ccef59c47d4. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/FR9DT2200730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a72b2ce947bf046b0b78c819009e77716f86a1bdeddfba04b7c437f5d256db. 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/FR9DT2200740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ae1b76a963a48ffee1d84cebed08e348eb658e34b39207c46df58cc5a4f0a3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/FR9DT2200370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f9f69f88587f56f09ccc374cea10505e0e79dbc275b8e2a4f75c719001644e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:33:01Z), 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/FR9DT2200780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57694385d81bbe2327eff21073ba4091087a14ed838ddb79099b9af38731ef27. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:12Z), 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/FR9DT2200800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05392b1d7c7d8d4d591111cd44f5b1274d09363c257a515335d0d681ee7b6ecd. 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/FR9DT2200810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06672c7c64d6e4bcc1c7f58e37286753378b0ef3212fb318b1c5b1ff3fe59254. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:16:02Z), 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/FR9DT2200830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40bf0a162db50a0897e33b52bf8d41a26d289bfba17e27cc43dd7c613caec64. 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/USUG12004785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4df7d8300c76c966173c38220a66d78452eaefa4c5c2de0e5dda51a9a8d3bb3. 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/USUG12004786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40bf0a162db50a0897e33b52bf8d41a26d289bfba17e27cc43dd7c613caec64. 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/USUG12004785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c52fc3df7be4fa31b0434e74cbbff14e64a6f9235d19180b3bb5a66ec55a7a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUG12100347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bce6758b85f375e387979835a54afbecca5eaef0fbaa596c2f2c7e234bd0a5. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:35:11Z), 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/USUG12100343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1603d468c23d3b7f837f1125a9dbfbc2701c9d5f7df36f5f625c12de4f2dc9d. 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/QZTAT2249278.