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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a55135678ea24058528b3358ef1f2e35701e7eb0d3a27a750e968b27067e7a9. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/798d96d2-21ea-43bf-b94d-b2494e0478a1.json and https://artists.proofprofile.net/proofs/artist/798d96d2-21ea-43bf-b94d-b2494e0478a1.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106c73fbfa5f43a2cecc30b9dafe9dbe3b707d93aed642c19ab2067dab2ab083. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USACX1700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb998e645c866c19b6bca91137a75d578873fd43bb3349c72a31fdd6f8bf6f9f. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USACX2002272.
Return Of The Real Hard Beat (feat. Deepspace5)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a78577cc2f44c8b55c3aed7960cb564efafdc526f38fa9a231c5c7aaf7713c. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/USACX1800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8618bfc9b7bb9c8b2faa78f6ff84e598060193f1abb652207e0dc88e485359ef. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USACX1600025.
Travel the Map - Micall Parknsun Remix Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cb8a27f604ced0fe4072663e6d30b122181a380c006add815ffd1d9e9d4676. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USACX1900210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d425c54718d33c96d1ebd96cb82c74a711ef85744ef9cdb866349d68b9b781e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USACX1800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a470b7fd2410347c256bbc598ade948bdb53553a909ca9c9007789f1600066. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USACX1400471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8701194170f585d785dd5d1e0550f54ff2bdd3449b46af8fd57513b39a3d69d0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USACX2100225.
Illect Recordings: Mind the Rap volume 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ed15df46da720434713d2b178ef61d24fd83cfadca9085abafb41836274d8d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USACX1101007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615ecea1d2848900bcaec4387ad0995f20e15b022135f213a7ad758d5f90aa07. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USACX0801791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0b403b75744bd7d66fd85b17192df9022b8400dc6a196e50ff06d6321dc101. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USACX0801792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56d29bfb72d8171f2155b3b924fb34a02e45d4badc29abf6a6dc8f6aaf35675. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USACX0801793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f809af805c1bde4f0be2bb656cf54e2355921a3fbedcf252878bed46966aafb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USACX0801797.