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 0x8dd50f0079072d0fa4515ba414909a3eaeb6c23c13c232fe00a5b403495dc30c. 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/8b54959e-505a-42c4-8aff-86d1f7828784.json and https://artists.proofprofile.net/proofs/artist/8b54959e-505a-42c4-8aff-86d1f7828784.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Drop Dat Remix (feat. Fizzler, Skengdo & A9Ksav)
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 0x6f6a583b16f1d0ed200b8141b7e100a1d77e0839ab7e1c24b6285d699b1ce5a4. 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/GBX722100805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b69f541091f7beb5133b62429e36b7590f58b0fa85d8fc7e8b57438ba0a29f. 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/DGA062449256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb06e313ab39dd49b7b08e89905b3c7eb2db570d3bf2269a859fb0d7edfb15df8. 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/FR10S2470684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c825bd51d6508539d5840115ae01897e79fe33653bb9e2ce68bc56580e9d66b. 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/GBLFP2337813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231364fca20bcda05e534e4bf37e77374e80b228a112f7ae6378fa6b58d8623d. 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/CA5KR2335453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a06a49bb87d7fee578f218b8ee3570af427351562de2557715ec5e71eb196e. 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/SGB502261638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa53b304ef1ab255af0051e6bf39251dd95794e4fdaf0aac5461efef0f6cc4f50. 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/UKWK72200701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef12f0094e019cdfa167228bb2d3813294e6d25da61c6bc97fae3d61f5f844a. 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/CA5KR2221643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8d0c81dc46ef6e8d1f47d682eb30550a4b009b7b02326e525b2ee32f261ba5. 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/FRX202143993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3271b4401934eb648b57f37435b972981c10be6631190d7a881e549d5db419. 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/QM6MZ2148337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd294c3a01739e393d65d565d87e9b5d7a0ad0b3847adf1f48c7ad0c776c0045d. 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/QMFMF2024240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca82ab5024056d6958d958487f8ded058bcf65e118346da43716ce47f31ac99. 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/UKXN21996229.
Fizzler x Fumez The Engineer - Plugged In Freestyle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f2ad00c3da4f955c274be6a0834a9cb3ef43cba28f566d9055feed91e9ad78. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE6SA2019438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0421f28b7a837255048d6e52bf747669c6f259383d94d2f6a9532abcdb219850. 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/UKXN22067151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0edcd826898f5f302c650e72130c695b64f5301b2e9e79d9536573d9d2c8a9. 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/GBX722000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddc81a9dce9112813de58657fb2dbfe3c485fe7eb5873ab445990a0dbfa1aed. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBX721900639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae186a16cfb86011f3884661b62031ba88b822873301ef00dccf8293e0cc37a. 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/USA2P1960295.