Guen is a village in the Mambéré Prefecture, Central African Republic. History Anti-balaka entered a Muslim neighborhood in the village and shot the people who fled, including children, on 1 Februa
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475716b64a1f0f160f063cff829f08bf3f869f680e655e948df465af6c774885. 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/5fd124ac-22ed-4bdc-a2c3-0f4aa3693bd3.json and https://artists.proofprofile.net/proofs/artist/5fd124ac-22ed-4bdc-a2c3-0f4aa3693bd3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b7bfde0496368f0092781bd69b0b3b1f9392f5dfdca59b1de624489a44ab8d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/VNA0M1937283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde099a42afd7e27ca17d9bca919fcd79b4199602d74c1f9a626417a7b3270015. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/VNA0M1938186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80751676cc44a23753355143b4c755e7549fd83ef10f170661cddd78db923c89. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/VNA0M1939194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5abfcadbe9bf5523b2139815f9b2a24b4a1b5880360e496fc5d02307975d4ac. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/VNA2F2403215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e66656abf5279ef6d5e9614283b672391611e8a2620abe305ceda557a778a94. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:34:53Z), 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/VNA2F2403217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8de8fd81c8dcd2bfa54733ebef5003f134641db5ec2082aeef60291e9bc5aa1. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMFMF2448946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb19ee3eb5d6dc43a1976009dc828a7d6c95e04a15e2c3cff461054143730468. 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/VNA0M1941136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275517fdf10d566c2cdc9a329715d29712d51471f5a91334aa9474caab9cd7ce. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/VNA0M1941137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67fc6f7aa9aa4131e8cac49b7c72563c44660dd151d16ec465708922a929784b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/VNA0M1941138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ae19734dc467347091c6a303ebb02faafefc9ee122c9de67f23def98f2bdda. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/VNA0M1941139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee18d16718a5e5e8870cf414c6c73a77ec565b88b4a606dc7939a34af6b71b9a. 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/VNA0M1941140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c0c212b36e2b3e36369e1e839ae5662d7036808c5444f47bd7d323aa03b869. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/VNA0M1941141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f69165e6af6fa6c7eb2acb4b74b3d5d2b7d01195b038ec38d652b946308cd7e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/VNA0M1940752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0797e271a714a80c93257abd9df4095cf30af17eee94569ebdd4cfa2e8c2069. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/VNA0M1941143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd6513c0cbd74361a141ae0c6a74f122e9b13bfa3948e2ef8ccf91d33430e0ca. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QMDA72562813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x664aaf2772c0f2622466186492c4835111f96eb526dd11879fff52127e57c241. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/VNA0M1942616.