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 0xdac4f4439ebff0bb603ee2295eea7b432947044d4576256bf437be759fa062e2. 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/a6a611ce-84e1-4b98-b964-36ff18919cb8.json and https://artists.proofprofile.net/proofs/artist/a6a611ce-84e1-4b98-b964-36ff18919cb8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hey, It Was Nice Seeing You Again. Although We Didn't Speak. (Demo)
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 0xe9546e2f91c89c22fd899bf02cf0f9f10f68bc8afa7af39826dc8b56488063bd. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBMA22478876.
THEY SAY YOU CAN'T RUSH ART BUT I ACTUALLY DID IT THIS TIME
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2050e98ec2f22e9c7d742ef3ab7ee612f8bf14d6ee069d2a440bd555f7d30a. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/QZZ782457336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2050e98ec2f22e9c7d742ef3ab7ee612f8bf14d6ee069d2a440bd555f7d30a. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZZ782457336.
He Laughs at Things He is Confused About
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae9e4a892d3a4a94bf86241990b90e4e04654d5fbb771decd7cf2fa40d90a37. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QT3EY2407042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857fe00a524e0b8586999abc206ff2ca4539371f430b73c31eda47fe3d081abf. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZES92595135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df0c297329e1d1f3386a618c72203a6e06397e5c458ef51a20d681bb45c8c87. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZES92595137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3957443799f07422b0b3357bc3b9df319a7348dedc8d5cf1fd3ee45e5c3d5cea. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZES92595138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d74c0a8bb6c2cddf6df9c6135463d809c937a1df10acd7682c0477857f131e8. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/QZHN52567197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d74c0a8bb6c2cddf6df9c6135463d809c937a1df10acd7682c0477857f131e8. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZHN52567197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d74c0a8bb6c2cddf6df9c6135463d809c937a1df10acd7682c0477857f131e8. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZHN52567197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbaca7f0947403a55936e5234bf5fd4c2e7ff3dd8dd4a8e65825861ac5b71646. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZMEP2566492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c69e5d0574a8cf6596cd1ce1fb57519a17d3c540e710b5c348492cbb16b53c8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZMEP2566494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7982d56fe6dc5d6e20c5ae816ca15e5a1cc2ee8d60492168441a42c14e0e23b2. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZMEP2566497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e8658eed02d2beb25822205c8b6f6765eadbe3488116d405023bfd012c7534. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZMEP2566499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c67fd4743a672da4684dc13610d277daa54b7f1876da01b49bf84ce893c49b. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZMER2545016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x702fc6eca8e9d97c3989d0e0f01abc57572e5c280e811fec43eee7b8260cdc17. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT4K42507192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf8baa4e59f8c215582dec86aa6b26d24ef8824c17defb0baf8c6386e33817e. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QT62U2526845.