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 0xbd9b5be0e56ad9259d88b80040ec394cba8fe9df12276585ead96245d6588160. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fed84d3-a26d-4e0d-900e-4eb381a32ca8.json and https://artists.proofprofile.net/proofs/artist/0fed84d3-a26d-4e0d-900e-4eb381a32ca8.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 0xeb14e8f8c0ed920ad524fb7d433e7de33f4291510874ab33e4a4843e8fe390be. 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/QZWFP2363141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f1c59e4bce9d4d452642b733e3daf7f109cdace9465718c9f889e65a42190e. 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/QZWFP2363144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7075805038f8df702e2a508a4537d8d4b035918c36f9adf12db9b60c20f65de3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZWFP2363146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f87f51eed92123899bc191e66776e75a2697ed9f18cc0bc8042751e1089bf53. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZAMAO2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6516cb276a0e2a85b2d99ac5a05541f2a2cb91b018da57f15a81a836cd795bb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZAMAO2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7724a48eedba3cae9b96057c33355bb86edff4a4bf1a8642b1b0c8f59855d4c8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAMAO2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58bd0e4efad8fd82483584b711094587d7b17bf86d3b02402cf6d1dc0dee1d9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZAMAO2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ec8731406274d4a40ad5c4353058460970d5a18993b7684cfb35705b33550d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAMAO2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ec8731406274d4a40ad5c4353058460970d5a18993b7684cfb35705b33550d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAMAO2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbebce16e03b0e0b09002fddbe329ae2ea087c034ea12fa964fdd1dd74d3875. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZFYX2215094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39cff45706993881d3c180b2358c1c614f99038f9d41fad5295b0bfd95d77006. 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/QZFYX2215096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5f287e33a3dd499b369b3a9e8df0d0f2a5064469ae9707e7f0a79e09a5d386. 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/QZFYX2215098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3f20655f61df1b83c79f93cbb3aa09cb0049a206f7089b2b9f97111c532d0e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFYX2215099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c625262a353dedb390ebf8976edf3911d05dda3d5e33bd905a337f4770cbd3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZFYX2215101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c2437460e81513eb716d7f49788bea91e6f1bbc5fffe64496087302e130891. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ZAMAO2400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98704ec41f13fd091dc0d7a5104485790b9237cbeb4d057adc7d58f68e258ff. 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/ZAMAO2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcf1043840e0712fa34e094b0f3f8bee0578c2c810b5d8bc91fb2f7e0d065f3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZAC012201107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea142cb7cdc775bd79224149417219469da9daa4916968a2ef90c41fc2915745. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZAC012201108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7376189cce3be413ac1c411c37aafae783ddd855059283223b9e2abc4e34d6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ZAC012201109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36f65060fa0187baadabed956ac53b796bf4e6b7a0bc71a3c5700536a3c9e93. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ZAC012201110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2727f2332c5f8151603a4dc782f4dd16c5711180dbca357ac0bd72bfd0aac4c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZAC012301214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bab46e1bf2066701e545e8bfa8e38b11a931ec18afc2a333f306c54e2f5408. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ZAC012301215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8b8775756d6f17ff39a6386049b9a99089986c32aa7856b37fcb9abbd8df1d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ZAC012301216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcf1043840e0712fa34e094b0f3f8bee0578c2c810b5d8bc91fb2f7e0d065f3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ZAC012201107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18ad77b236f774fa239b350778ded0905c338c5bb075eab47571da201c458f9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GX53U2415971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf309e6dbd2aa73e0fb7436d8c774b8270d2c86a6fad063fcccac41292e27f89. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GX53U2424461.
Dali Nguwe (feat. Lokzin Keys, AMAQHAWE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e8b186d189d67b1f6f0c755175480974a29139d90c2d47622315fdb26acdfa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZA56E2315401.
Wamulaba (feat. Pushkin RSA, Ceeka RSA, Gaziba)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3da700b4095f80cd2222b1bfc16b8e134c9946b59fdd393d996f934b18e62b6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ZA56E2315403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2402267f21f1dc656f55124acb248de245a9a3c5ccf2dc55104df2e72678c1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZB2312200029.