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 0x80efb6bb11a67385a8d367ba7314d7aad41d1dbdcf1825738ae0529a53195e68. 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/edc90134-247a-45a3-b517-a23b5d52c99f.json and https://artists.proofprofile.net/proofs/artist/edc90134-247a-45a3-b517-a23b5d52c99f.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 0xe34f8d645f2d96146651c58c794ba606138de0b27f8a0f13cb7eef81d452a63b. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/LBA081102182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34f8d645f2d96146651c58c794ba606138de0b27f8a0f13cb7eef81d452a63b. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/LBA081102182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d16c9f6b67bd6ae5a9e897a1bb78bd2cb00e7d4545f06245acf3fb160e3325. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US25T9922985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134fd7e3995330b483f94c7dd2fb7f30032b8a4f601ce82d55d9ff7a136df611. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/US25T9923057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4fd6ac24f4b7af22b08f9d5b760e775dbc8a477359a06effa5f00bad9faa1a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/US25T0810275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0716e461bfc5f7c1ae9ba6083d089445a5126c52219520b4225c910130cf80. 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/LBA132200842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018cce3714cc4e86baba612f21f06dfe3459d9d9bf4aa433653b795bf52c3029. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/LBA131801695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de07ec860c29edeff5293e21f36d1968672719bd493c2eaca77fbbe58279b72. 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/LBA131801696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7ef50326daec336da68370a828907cad6817141d669541d89ba153910c6aa2. 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/LBA131801698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69fe8d2151787e43b03a681968780d73e3de1c55861f3d2f5095b1206f9f2d99. 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/LBA131801699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ea0184bed28bbb650b713691875f7e6895477b647703a70f4c41578b617c22. 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/LBA131801701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe71a03c225ca6a1da0c5e86b95e820a10525f30de0ca94712ea4437ddf026c. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/LBA131801655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd830b037b842662b557319f06d7aaab83e10493020e86c7daaae63b0338e63. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/LBA131801651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe71a03c225ca6a1da0c5e86b95e820a10525f30de0ca94712ea4437ddf026c. 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/LBA131801655.
Amar El Zaman 2 (Amar El Zaman (Dehkatek Bitred El Rouh)
Amar El Zaman 2 (Dehkatek Bitred El Rouh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84c68a3c656690c24985a580e1e103f3dac20ee3c449729f6ecda78adb50876. 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/LBA132400074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058097e9854a6865dc28ec247936326be0e13cbc382ad8bebdff84e05ae24900. 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/LBA132400318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f3613cd58b02d9909c17104d126588b543235445bdccd4c059f6c1804f8f1f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USCGJ2447755.