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 0x3c6bada93f52696e77e731a61de91d7dea5d1d811356ab4e7be7b0b29fa10bac. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20c0cf6e-e6dd-486f-b13d-d6daae1dee7e.json and https://artists.proofprofile.net/proofs/artist/20c0cf6e-e6dd-486f-b13d-d6daae1dee7e.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 0x47ef38ff9a03fbdb625b53c69eebf28d4fe3200790dced743597903a34c59fff. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/USDY41841381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a627110c13d0a72a95589f805633e185b9326dd685c25051e817a4fbcffa1ef. 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/USDY41841384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b12bf19fd9ae1fba5314a8b9ec4c27a455f75417058d97ef94dc980ca660e2. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USDY41841386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb78af17c186fef1d656ddcdebff98ba5dcda68e5a93baa6d3a6a3791ba55e7. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QM3DF2172645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf319629348b906c6104dc58522648c9f32fd653ee9b02ebd951aaed2284fd5. 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/QM3DF2172646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3593ba2d16d1213969ef24c397d63290ba70ac15f2874a346118a7a2e3e1fe66. 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/QM3DF2172647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8242cdbd5607870cb8b0d5d10546d17087bee5f183611206abe328c609bb9538. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM3DF2172593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd07634bcc1e1cdf988f43dc469bea263adac67109c8bcc3b99808b8ec9b44d99. 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/QM3DF2172596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c125bf2c9ceae79b0edb967aa93c7fc5a4ad4544716525365b7150f31b795c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM3DF2172597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d73213cabeb876dde5956196bd281228cf92dd4a1381e2b798f5a206eeea78. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:03:47Z), 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/QM3DF2172599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58db579850f188044d7130603ff9ac9472da3231594ecde2e508e578f9d8a3a. 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/QM3DF2172604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002e471d842c2bfa48babac0e793dff092552bfd4313c9015e58b51638596760. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QM3DF2172499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6190baf306cfba6390911e5f9efcf529d3038fc3d9772146628d5dbdb7eed8be. 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/QM3DF2172503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaba84562af62ccf7b825e1088ee9d7373f1c1c5d1a6b07468be3de246dcece. 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/QM3DF2172504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7e47be13549117eb53f335a454a171ae496a87b301807843cc7f4006d7fd93. 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/QM3DF2172505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f618219f320569a876ebf47eb7979bd147e08ea07f93ddbbd2e5765b85f6a6. 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/QM3DF2172508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c3ea1dd9e2fc0ad86bba06a95cc28a185e1c5f92e1a1db222cd15cdccced94. 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/QM3DF2172514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5bfd5f2fed0fc51925a5947c6f1e15b6d47eb136c21f0aa070b9a99e19becdc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM3DF2172515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27746903c458a8992622310321d414df4db65275306eb394dc7b09ac3586a4e7. 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/QM3DF2172516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d35ab10f78734af1875bb1973301d0ba657570a53fabb48cfae79bc17bdbd6. 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/QM3DF2172587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5710e79ac623898f20af612e7d4b89caf002d8811c2ebacde978f76e00652e6c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:05:41Z), 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/QM3DF2172541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220a18cf4c5d4b3e34bdde1c445cd083085cf9a90c5d2e6e36ecd1c85329cde8. 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/QM3DF2172542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaa70755c959fe51bf00202e3daa399e9c9243e4de1f6fc7ab8c8e3cad561d4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM3DF2172543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b33e3cb76151335d696498c6feff3771d2086f96dafed1a917a16cb65f64dfa. 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/QM3DF2172545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c0d6a9ea03ffc58e7510b78563447f9e1b994eac2c8731e36cebf46356f056. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:05:32Z), 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/QM3DF2172546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ff14f0615d40e0cd237caba9f1274744822132014db6d4c78a812853deef94. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM3DF2172559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d6cf3a26a37b9d54cd3a13d3f7a126cb8f2e06bf2b72c7c4d343f34e3385ea6. 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/QM3DF2172565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe039872ce380b5c073dc704b8f800d2f51571d837d428d338df4aac8a4403528. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:52:18Z), 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/QM3DF2172571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940df2fd8d7ada6d8754d88b1ed56e43efb2e3fd9caff593eeed0744158d4b23. 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/QM3DF2172572.