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 0x3472bdb6b42c1fb8fa4d68ce79c6b73399b244197a4e3825f14b98ee98c4d391. Chain 2 (Bitcoin): anchored in block 953596 (2026-06-14T06:21:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/084bec85-89ce-4f45-bd27-236e81425c7a.json and https://artists.proofprofile.net/proofs/artist/084bec85-89ce-4f45-bd27-236e81425c7a.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 0xc6be3a779e294282d4042543c73634bae0a6e8c15bddf99eabab2a846fbd70de. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:42:39Z), 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/US4R31016149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79d86504a6de82ac9eaed495205832f92e2162caeee2176aedaff92f4ea443b. 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/US4R31016152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cf7b81ba01b909958c18172a92cbde2695fea1622c3326a8c7eca46371728c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/US4R31016153.
Tears Will Never Stain the Streets of That City
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69070f8c0dc6eaecd473373c15676ebb49f79139744984346dffe7c14aa67f44. 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/US4R31016154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f11b09fab34fa57bcb13074c313d8ecaded7de4f44d4e15846944dd570028ff. 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/US4R31016155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae39574c83c3cc5ef655feb6a817d7f30c067acb352fb0f90c472f6dbb7fc15. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USHM91616661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1336b7e712fbc33f103de4bf4949abe762a367dd2c1439ffda219b9e763133dd. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USHM91616665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac92ed1a8408377dc8ccf4c463dda2c554a6ca703b220706eb32633db799c10f. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/USHM81696798.
The Devil's in the Phone Booth Dialing 911
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7467df44afb3d77b4edc847e57fc03cd2543b3f3e9e26f27a18c026a6221810. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:28:31Z), 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/USHM81696799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221035dac962ab853e8f4eb055358592ddc2f11dd7d416ee862831ae6f0499bb. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/USHM81695965.