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 0x2fb0c6b6f9b3484d8b2f7e1ac4ff4fb9d47327c160ef93c36d7469aecd1c6228. 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/8d818cab-98f7-4878-a067-515a2289d236.json and https://artists.proofprofile.net/proofs/artist/8d818cab-98f7-4878-a067-515a2289d236.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 0x63070469eba24843478c29aa87cdcfba407bc4a5409e2d33414537def64114a6. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QZHNA2008624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dc0f763aa5d13b235e6417c2cf3959f1d8fc75cc5a38eff180a5f1c2d5b937. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/QZNWX2044926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b86d27f7908066600dbdf55ce1e12b98aee24d24af45b97820a46dcd6fa35f4. 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/QZFZ22192524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095918f77c8292b149d03c13abdbda618328a93789385933a0a6744c459f3455. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZFZ52186174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba49fcf7ca324fd1cb05b80ed8865e00db6b038961a6d075408e081116d4d9d5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BE8KQ2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cbd4d02502608d6409fd71827992882ab7b7c6a4e7dc3bef81cb71f79dc961. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/FRX872199064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ee6a8915944695a65d4c880472e2c9b612a051dd8278042b69b8a452df3cc9. 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/BE8KQ2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24fd2476679a702dda8d74fd3397bf0041dad2c741403c93ed34e5020dd7a84. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/BE8KQ2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6b91fd8d43819cdf9caa4af62ed5f8fdab5050eecaaf59c14afc4bf15ec97f. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/BE8KQ2200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e78ff1e89a6750e62772ead037c6b27156797eabe1ef713900eae2005f95c28. 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/BE8KQ2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124b9aeba37a0428b38d35f98b209fb4bc8c8722d80ec1439f770798c33d8993. 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/BE8KQ2200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6aa46710769f1fb0f048115345f83fd74fc72fca6d735bb2f7e2dc82d933dd8. 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/BE8KQ2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2690b490892f71ca9b636d69d0ceeba681b7c319ca28a42060d9f8d4023d20cd. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BE8KQ2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f2e84b44be93e92e548996a5416bf3aca6e04712d3aefdb54ec9fc37aeee99. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BE8KQ2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa767a707decbccf19ed59b5c0859bd662b5ccac9dd444a140887e2df58604cf0. 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/BE8KQ2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70804f5056e718fd7dfd57c5d876baaf2fb29f87c31afb623131f0387f38e5f4. 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/BE8KQ2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff189da720d920fcadefa45b2078b7ccfab45c8ac7f8cf1a0317958738482919. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/BE8KQ2200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87070d57209a443acfd86108fdf6199c2eb9a2d048f81ca58e9c8f43258bc1b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BE8KQ2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6f86bb35b1c1489c4f726fd61ecd8f7a5feba982840daa4a09b835a99d558b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BE8KQ2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e41c8833b45f9424ac83d79f944b8ff3272a840400e4cbd2792012adcc83aa7. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/BE8KQ2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99d5ad1d7ae8e61957eb3e7deba4fdc8f9b75cf7c01dc04803a6f3322c6c1c7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMBZ92348274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2779742b356710a67439277d8d7bf17423725750b87d7c59ce0380e64d2c2654. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR9W12418663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64bfc8c848a341c8e1aae261f4253707a38de4a32d733ce5cb0ba17b62316e0. 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/FRX872408259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7291bef9b96925d5ed257a82d740eaf8baefe4a18019cad8b7f9e43e062a7761. 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/FRX872457783.
Criminel (feat. Helmi Sa7bi & Gotti Maras)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc01ff6a43ea1d6e4f7b726773ed716ef6b9767470e6f66247ca3d4580f57cb3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITUM72400598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd0dc07bf6773b028cf765066197a8bdb10cd8e5c5763fdb7e6f0719e0e9035. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFK2106817.