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 0xc949737fd6c4810903057bb0bf6f2bdb1c480eafc01635f3c4b286ddb1b70fc4. 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/15b91033-60b0-4f13-a50a-38725e01223b.json and https://artists.proofprofile.net/proofs/artist/15b91033-60b0-4f13-a50a-38725e01223b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Freestyle de rue - Double Tape, Vol. 1 (Mixtape)
A LA DEMANDE GENERAL ALDGSHOW Freestyle 2 Légende
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 0xb0652826de245910ab9855535b6fe4a63feba0ae5976bfe17a61b7000ad5c77d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR0U91501256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f5f9711c15db47f4452c8148ea03833dd4fde8366f54a5f93a107a1abda9a6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR0U91501200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afe2258eb240acf22b988f6e52b15ed8549a5a16bf401dbf9be3be07abe6c0b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/FR0U91501265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1980782792f8fdf2bf78c4a25772db4273a4a3b7e775e41ce27b5500babc6519. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FR0U91501083.
A la demande general ALDG Show (Freestyle #12)
A la demande general ALDG Show (Freestyle #13)
A la demande general ALDG Show (Freestyle #14)
A la demande générale ALDG Show (Freestyle #15)
A la demande générale ALDG Show (Teety Guest Freestyle #16)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738131b15a62f69631f8343fe0b891fdef9987190092cac14fc1bc0500570ef2. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/CH6542054222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a7e589025507390af3cda91706f1da920d6218b0c8f34bd5d10daaad5aaf5c. 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/CH6542054220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfabdc9278b224d629d6cfb3255b3b7b1a5d6f15fe8e1f711a925972c9dc0e99. 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/CH6542054173.