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 0x8213582d6b95c63cc5b20ea2642911b707fbd0404ca005572d023ae7d252f720. 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/4390b8c7-87cb-40fa-b0c6-4215e9fae5ac.json and https://artists.proofprofile.net/proofs/artist/4390b8c7-87cb-40fa-b0c6-4215e9fae5ac.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 0xcb66466d2d8ed0c5d389f5d0006c61cdd1344d17b7334aa0a39a79a6f0fa81f6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GXBDS2402423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b961beeb1ad26dc8f035fa7ea373d5d131440bd1a79d97ce40847025f95c9d9. 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/GXBDS2421678.
I n T h e M i d d l l e o f t h e N i g h t
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c47bb9b9df8409aa6ce3f8c6afff1e7aa6a407ad797a2ec73388b5f9bee746. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:15:27Z), 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/QZ5AB2183567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f78383299a1af8881da51378fb807f7b829e83cfef66d2569df87fce3723878. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GXBDS2417650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733d7ff95726579a595cfc5913285c8eb91f2281d0e25c0afc9c466d5747fd5d. 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/GXBDS2438089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e90df894f96b89f936f528cf2c3bd95d7dd6af56ccad44464c374a4f71be4ae. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:30Z), 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/QZS632210890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cb1e69af420b10dd431dfe958ec2a35ab3b0ea8eee7e1b2967393b95e51ea3. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/GXBDT2459046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f687f95ef3f02d534cb1dd96654838af520337dc7044b5258fefc770f424c12. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:15:05Z), 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/GXBDS2467047.
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