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 0xf99d746c4133915b129e5bdb906ad3aadfd3528a1820d6d4c179489d15d32015. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e76e744c-b752-4a1e-92c4-5d5700265393.json and https://artists.proofprofile.net/proofs/artist/e76e744c-b752-4a1e-92c4-5d5700265393.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 0x85bfc3efe6576b989d54b11ec9208fd457e2f7cebf6345bb0f1aab71a5d530a5. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USHM91986393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9398b8417a6131e3d5bfe0280518983a5f279c62e327a729d745cad918db8b9b. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USHM91986394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e252da26f75f6366a4b17ec84c10d1402e8de9463f24c33849888245259e87. 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/USHM91986395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c15b5705cd4ba9229c59ed8b00a97fa90a8ee1a118499611e27f3d3462bdf4c. 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/USHM91986399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf4ff0239e9607ab64570ea4cbbf48402bfccba52788ef37746edd3e7480737. 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/USHM91986400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294104c107e1dc41cac277cbe9221b22040b0596c330b05902858366d17056b2. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/USHM91986402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764127e42d86f55d64a0d3ec69c51eb4701c89f7b2107d7991e5bc7a26bb860a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZFZ42009652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01a884f0c3805c76fae4b6ee0b4e6c2146d7d06262d0cf9ee4412d910b1d70d. Chain 2 (Bitcoin): anchored in block 957835 (2026-07-13T09:48:24Z), 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/QZHNA2031026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bba3bfe999fab5025db7c487d366d34d8feb785489913f28de78c637f9842d. 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/NL5HJ2100124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eccce0d5e7ba1f4feab6191ea4035f576ed224927539dc9bf989097c626babe. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NL5HJ2200162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3f6f00ad00573364f0cfa199b5372ec82dddb45ad0bf35583c9ea6d845ab77. 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/NL5HJ2200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14cffe8d954959992622bd94b4b28cbe3ea196b2dedb2cb66cad8fc66936c27b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/NL5HJ2200165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b6efca549ca50f52a7fc5db03e154eac36ef3aed7098a8ac9ba4ebf76e2fec. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:45Z), 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/NL5HJ2200166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0602f425ad01857d8d5ce5acfc4943b2cc6befe0df15c08100b855658e7b63. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NL5HJ2200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45c5fa6191224e870b6c939e65b8fd37fef03ee5acde4bbd13670be4c97fda8. 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/NL5HJ2200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30da931afdaf2e7ed7081ba6d14aead1142b8d669e44b92c8ca22bfb9dec6b2a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NL5HJ2200170.
Gangstershit (feat. Madina, Nass & Riffi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9934aa2ecb94d98cac5e298181508bd2a9ecf0d8b5b4e78e4386a4512cbd9e14. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZFZ32132036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe540e37d2594da791bd116b5e5a18376ae7021dbd0278245589565df310e995. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NL5HJ2200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce622404de41fdd22c9fa27aa10fae6696d18e231b91925211d7b4dc995c06a7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLAM41900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0022804a44b0fc3b87dae469e1f3053d64e05aa7b55932765305987f824ce618. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QM4TW2232456.
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