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 0x22b52eb46078b5811f816ff166c3d1cbced9b0a91838ecaf02dfc4d4cb2d3265. 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/d9c71e46-040c-4c85-8d1f-715709e8bce7.json and https://artists.proofprofile.net/proofs/artist/d9c71e46-040c-4c85-8d1f-715709e8bce7.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 0xe523c8928a2ecdb73933fe717b0ea58d6ed39c56e3b5ef5e4cd7b4163d1abb29. 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/QMDA72327000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475a38b4d0c972e8fb736019e6ec6440af5cd41d0950193735915b6532a1758a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/KRB472401126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae408dfa11c6505ae1909a9b77333f1377480bb133ff6a8e69fd94043cb0ed14. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/KRB472403773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d26549ee09ff3e920f536e89d55b90ca72137c093b66e9679757146499af55b. 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/KRB472403775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf107d5515ec003e771a02aed0662133473aed4c0f87775d7f8d5b7da2b77cea4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/KRB472500301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d95e0034f874d71cfa8ce40d7fc6c83de58e53764fea79a23f020224db1357a. 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/KRB472500302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf178e2f0333441a7d04a58c3b15a21d016001d504bf7ed96a96c42e0c9fe60. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/KRB472501267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6315a938c014e7be3201f1397e2af4beca187f53d632be65fcdccb55f8e6fbd8. 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/KRB472501268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf178e2f0333441a7d04a58c3b15a21d016001d504bf7ed96a96c42e0c9fe60. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/KRB472501267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07faab3788db580d32a9820234ab348dfa907d32e217773225dabfa56f70f129. 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/KRB472501453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd323d47e5ad9e7af089520099fd5379cb88195994c356ee397b35a54ee7870e1. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/KRB472501455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70eec016bb3b0c166081a5be88bc1280e8800c3a2a23cdc2a83b2842b7d74373. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/KRB472501456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aee2e8c5eca1eae8b361dcc771f45eded26cb85d58ceb5f7207973e74d2552d. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/KRB472501457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018652660400bfd8f5cd73c6af00d84b26eb5d5bd21e981d4e6134f90d7ee11e. 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/KRB472501458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e79b2f7344115bc13c8fc0b8b82c427f4bc28d92747c728a1bc8c7e1e4f990d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/KRB472501459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8c589fe3b501336b45c8c580576f1ab32b6a5f83cd1b05141e35290bc16301. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/KRB472501460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8122b4c98ad1e83917e629211f88f9df750bdf9fede294934bcb5b935910c10b. 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/KSB012310969.
VERSE BATTLE RAPCUP 32R GROUP MATCH Part.4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72456e9167503b9455690685fab94c024c9ad6fcb1fca15d875bf40dc6b567a. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/KSB012309892.