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 0x7af56ebb29f308107c1eb515f1ed52df6aebb8f1b690eb02b29ad53370bb73f5. 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/090b2cf6-9a44-4b9e-96e3-fba071e78477.json and https://artists.proofprofile.net/proofs/artist/090b2cf6-9a44-4b9e-96e3-fba071e78477.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 0x4550bd0c0b5c5970876dbba29a5d9bcc616ad51b1d3edb74885521bb11418814. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:01:29Z), 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/USA2P1447699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e5781e25138bdc6bcebe42c7cc0c62924f1f278ddb727d96b5be69c761d7fe. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USA2P1447702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7a3c128f3d02bd2425eb1a47454756b4d9983f2c9f0e8a0aa2160b6b38283d. 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/USA2P1447721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bca76142b3fe9bb85b6b018f477f5f619c5cfee3f65430e6916fda9f78e5dd. 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/USA2P1451350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cc96cc3c6c8e230421a85c0cf60f52b6436cc821cfe17e032e350c0d8d35fa. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USA2P1452732.
You Say It Best When You Say Nothing at All
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc887d334ace3068b963ba2e3d17cc0ef48a3b67e909b75588890ccf3da7ae21. 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/USA2P1453620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ceedfb1e3bd9784bf46949c5a5962929dea483819ea8cf5369e2a507af7e6c9. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USA2P1453632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f65002b28975223c66ee84e01172ad52f92d33a3fa1c602ab0739c918b1fda1. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USA2P1453637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036ea8b23a724624bfe007cdb8711f1fc08bd7301f53386ecf9987335af9e54d. 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/USA2P1456135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c329f40ce37d510ddc2bc4b44173713b59f9fa6edd838e0e31582fb2dfcd6e. 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/USA2P1465148.