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 0x9427c595bc94e6445b6b367d1a8fab05fccaf85dcd5b0d68ed661a2dbf814c91. 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/6513a806-789a-42cd-9b24-346749ef83d5.json and https://artists.proofprofile.net/proofs/artist/6513a806-789a-42cd-9b24-346749ef83d5.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 0xe9a021fbe361e06138b3e7dc2cdea840f4c66b1701bd70c3af99fbfd887a999f. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEPI82411734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d935c6dc724fb91a41530867fa4872af089240ec2494b1ca3b372c16972e211. 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/DEPI82401788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b3e318ce4c7b2c134d260ecf340421af63c24aa6e5c45f9025d8806fdac011. 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/DEPI82411735.
AFTER ALL THERE IS NOTHING REAL OUTSIDE OUR PERCEPTION OF REALITY
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ff605676389148cc024ecbf8d63a4b2bf20703d829dea2ada13a422a467ce9. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEPI82405647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a96f8ebf73a9734d0489b20e7ce8ef44bbdc324e4ef45198870407dfc7b6df. 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/DEPI82322421.
I’M GLAD WE DON’T HAVE TO PRETEND TO BE FRIENDS
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe890d79ae31b0bad50033ff22ca0c2c5dc289b550e5b7fecaf9c494135c3af3. 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/DEPI82411736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c6cdc3476871acfad1ed66854976898fb34c32d29dbc84c7f5c80f5c6c80a5. 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/DEPI82411737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ff605676389148cc024ecbf8d63a4b2bf20703d829dea2ada13a422a467ce9. 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/DEPI82405647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a96f8ebf73a9734d0489b20e7ce8ef44bbdc324e4ef45198870407dfc7b6df. 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/DEPI82322421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a50a14808be01fd407bb48a9ef5dcfe292138fd58f83dbea899fddfc35432ca. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ATIM32300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97d4fa93437061dec131ed226830a2beac36b8b96ab013592d452925bfeef8c. 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/ATFT62000172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c614746584b703e61a976a485b383179bddd96071f601be0d4ddfb80e27e743. 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/QZES62320053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845be7fd1df7fad913ca5cb1dac1d6b5037879e3a850beef984d73314fd038b1. 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/QZTB52236362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd99ae665b2bd7bb3306351d2790176989dc3b27aea11e6902e50c737e2f29c4c. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZK6K2272894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a156a6cd542ccb4a079d3b00c471dc9b702781790cb9472693769a07c25bc6c. 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/QZES92288118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f085a48ba7b02c8b2e6bbb6f07f7b96d6293ef2cdef73394cd2e964096a8b1. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/ATDQ92499406.