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 0xfc1cc6334f73f64f7082cd6a62d4b1ad1eba69d79e083a64fdf7d1018f311a9f. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a3323d5-bc64-4ada-bdb4-8d2409c38c66.json and https://artists.proofprofile.net/proofs/artist/5a3323d5-bc64-4ada-bdb4-8d2409c38c66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Asymmetric Beauty (feat. David Kuckhermann & Raphael De Cock)
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 0x77ab498f113746f20528af0f32fd58c92b7f2fe4d768bbc8636e38788eb5a6c4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USL4Q2388949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f450efed82d8635609c799fbd82bde16ad4ff5f2b75aa2aad7f6f4c51066fa8. 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/USDY42571661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bd2aafee4750314278454649f0513dfa6ce411baace95a9883a84bef69c83e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USDY42571650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c166de7fa9c568f4c979e4dcbc92c0b32949437d6c16b20ed9304035f3feed. 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/USDY42571651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a2db2032ce3ba039927f801d9b8e618089523264d14a24d2a66bad807096be. 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/USDY42571662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0617ec1fc646073f3543eda2ed6ba839825c0e094c068783904a6760e06b4b85. 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/USDY42571663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe4eef147d171a07427b5b332d7fe83d057e0d8fdab1f518698e3ef3ac123e5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USDY42571652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad33300439120e1dd2acb6d4438f7b54c06818f512ac91dce5db2a7b7e5b9ce. 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/USDY42571664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582fbcf3b83b77944784935ae7da9f6a83f98514250a8af1edcf95b8a3b05164. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USCGH2582148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd6a00ba4e8c1962aae050b988274210630850bd1b9f924c4828f319c8c2510. 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/USDY42571653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c252dc85e8138958b1d7aa84ae04fe8dac1284a0927f2b8fe4f4f8e0d0bcaf1. 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/USDY42571665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f51a490422a64e8be3515773d744e304c5856eba2690c18f4c0af8c41c3d656. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USDY42571654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6041d4d96f8af35695e4f6352f00b6371f78b8789aadfd6569896c6103b95f7. 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/USDY42571666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0abe3050290409e3a0e43aa2e9fa3c64cb9177537f6de52acc11f6874e2529e. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USDY42571655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dd67a5c107495916ffd0a2ed876fae53b6baab81203f204036b2c6c98159c1. 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/USDY42571667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63a2f33cf6a2d15dc341d20dfedac421032be85a432d26b3ee067c5c683eb09. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/USDY42571656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a214db78e9cd6cd4f9e3edecddb2c80bea8dae009ec42e07f9c773c19d35ef4. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USDY42571668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776169d26b171628170c53040eedd07b21b42951c29d138ceeb6ef0ad4e93749. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USDY42571669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b9744f2b6aefaa278229a083f0fa51768adcb6e126031bc4939e4bb18f440e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USDY42571657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531d39da5ca01a3ed705a703c3ffa08fe7b3cf9849d936f4b18e5b5d1f1e818c. 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/USDY42571658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f58b12b148cd55417f216ba0ad1829610be51ea5a0cfe3e1cdd39b963899ff. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USDY42571670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba9fa496ddc68c0f795d503663d2e97028b25e1d32518901d29e27dd989a9f1. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USDY42571659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ca280f0104199fcd26ee4650e3814aaf63adecd1a4e0eff16ec5bf3f520b0f. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USDY42571671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327a19ec58a676c6e8f9cdcb19d7b54bfd2a2ad6aec990ba107a2cec055f64f3. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USDY42571672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85b4ef20ea24c3b58f1898236deb3a484cae6250d3e8c1e4403b8d554673fa9. 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/USDY42571660.