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 0x5516258a48be8341ab3e9c06e7a421f13e9f7ca35b3d3a8cb273cbc932f5ab05. 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/0e0325ef-af83-412e-962f-4ca01f8097f4.json and https://artists.proofprofile.net/proofs/artist/0e0325ef-af83-412e-962f-4ca01f8097f4.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 0xde29849e86403997e17a35febc6fb9a00bc45b212bced366b049e3a1cb87d890. 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/QZZ7T2458648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fa8468860c862ddd7a71f1ef89dee54a5174c0b6c56a37aeafbb94bde1928f. 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/QZZ7T2458649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42db45d615c71d10308487a329c32f2cc7fabdfd9a6b2ddefcbb2afa925cc93. 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/QZZ7T2458653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8675c8b463d450c89a95044f546ab48788571612fb580244474a04c37b98a901. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZZ7T2458654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d57e879f8bc90b2af0e30057ef54d797189d1aa54d8d830ab955369ccffabc. 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/QZZ7T2458658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc979d71f24fdef7bae29e022adb8b26d93455c694d30286701b1b68f0e5c3425. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:46:11Z), 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/QZZ7T2441083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f68a46ce8a76b74a9da063b0d2030e78c680cd46deb56c83bfc62b516a8615. 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/QZZ7T2428038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893c0b6da42391639405d26af4b9458060a00d64f06ab634763304017face2bb. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZZ7T2422093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea723e4497f11ffa0ba5e82ed99a8f0a06f57fccd3e1a530052be5627745241. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZZ7T2422095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfeb6224a204fc2ff91574663a29f3ad3abaaaf547117d288384bf059120c758. 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/QZZ7T2422097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5554bfc9742ecc46081ebec511577f29c0eb33124270f21833bec6d36abd62b6. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZES62581945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa5312dd11ea0415ef1cef599858dced45d1155984ad2bb7e7ac870d42db803. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZES62581946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434fdd0d5e4fdbef796316f63d0984eec1c26026c0f353f80a5fcb5c9f6f0d8b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZES62581947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2deb906fdc2efb44709f4ac01d58e0fd11d0b40c2abb8e624aeae1be50898d0. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZES62581948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d3e32d9929d0f3f48ee926393fbc7a8ba0798e2cc995fa4e5649413aeac32a. 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/QZES62581949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdd616ff409e19f38ca083c3e34feb8ec33ee9b0d554121f6a6f62f6ae53a4a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZES62581950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021a234d64644a4329a062e4f503611c340e7a336f5a4c8fd6dd4b2cbaa7e1e1. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZES62581951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e4bf961c1a7ccbe7a430decae9abb88a4224d0f23250b400da0787c011ed40. 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/QZES62581952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0902428421c650289e8a637242e068e23d5ade298b70712d30efeb1d2d28a5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZES62581953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddaeece1b6a5615d8132114cb131c567c6e1412afc3d3c032d78ba469a00433. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZES62581954.