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 0x979a5ffc1935401862c12ae6c0b714467fc1bb0818ca4491ac12069c3b2e887d. 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/e6c4c8a8-d70f-446c-aee3-9444c265277f.json and https://artists.proofprofile.net/proofs/artist/e6c4c8a8-d70f-446c-aee3-9444c265277f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tarakni W Rah (محمد الفارس - تركني وراح)
3ayni Ya 3ayni (محمد الفارس - عيني يا عيني)
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 0xbf04a19bb97454a9ef7e342db93c1256d033939e1fa4ec89d4f9bddbcafcbc04. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/LBA0H2004373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7911762e39cc35cd33b90fc8172a2609a2edec90af03fd6228bf34ef94cc2f50. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/LBA0H2004556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb503d40369554597a01e88159e56cd577023d3bae519b751f8ac3c61794e1586. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/DGA052323541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161a2e1e207923576a2e6dfc9a9a68d2d7c7875fad812aa87161af6bf8e4963f. 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/FR10S2548310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a92c637ecbdd3f15ae29b3cba8b2028ef54a296b3e77d611a817d0626f1b00. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX202513209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08105b74232cf272ee44f23c311f12ee05342f96a3af4049144fbd0db3178f88. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/LBA0H2011843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226eb07bf66098a360affcb6efda6f49d7f7ab9e92173d20c9a709c47df8074a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/LBA0H2011945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08acf7dbcca4ef42c3785e3b537a8a734a695bcdb4c2f9b611931eb20ee93db. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/LBA0H2012270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150f294cb5de81c0155c500e6f311c6d92acb33cc1c1d6fe36e9e38e34baff2d. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/LBA0H2012390.