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 0x285af5dc0afe99cb9e8fca5f6355af941087f199d41f114f58e189b4e27d67b5. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d6002805-e133-4657-83b4-98bb28b80f87.json and https://artists.proofprofile.net/proofs/artist/d6002805-e133-4657-83b4-98bb28b80f87.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 0x2f91bea2e0eb7f58069435ec0efe41b66ff9a92184f6e4c658724e2e29d674f2. 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/QZDA52469827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932433224e1a50abcd8faef329de1a61ee85f4dcd8b7498d7bfefc9b7d5021e6. 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/QZDA52470305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13703505bb3fbc5e91c3484271fdaf9bc54b3da8b1a7f587aa7bbab8f412f842. 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/QZK6M2363596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e26eaac4cdc1b347b1b1fcb66707e3fa30136fd988d692fb9441d55ac24d20c. 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/QZK6M2363597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797aa5920ac7de04098205775a76c9554160362cdc61e7e5712c27fa2fc51f5d. 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/QZFZ72208930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2537da6775c4797842b271b4f93e89f4a6bd8183f8e7759970bfc32088a8be7e. 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/QZHN32125240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885c94f307c31fd91c6665a3053a4b4f7348c1eac4d870bb025fc72d85f81793. 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/QZNWS2094404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339aaafc7f4db6d5276b988808a80bfadcaa0f4c977b2c07be5fee72e05e6b71. 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/USUYG1390180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688a53b9e342287339bc0a3b2058ddf8e08b68feff4cb51cc041968a87d54903. 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/USUYG1393304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa429e6994cf10385bc0fb8885aee37b54b9aa77ca0428de44b5ae9dd117b95e5. 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/USUYG1413644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5916931396867442d7934317c45bbc491bd29922ec5cc7da7d6920c66b9751b2. 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/USUYG1398459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95662e232d0d0eb68d14c861bf50e5a9f6f0551b446626108cfc25eb33952a0d. 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/USUYG1413646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe354a38d8c86f1ccd81940573803114c7a38e3c219d6470dc07443510fc8f87f. 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/USUYG1413647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368444fc691d25bcea3fefdedfa11f0df8f08f229292484a1884ff1b0accc945. 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/USUYG1413648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa742ff2fa8923b4ff8ac3a5c8f19ba90a1b86e1f6780783143b007d430d189da. 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/USUYG1390181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d46603e3177515f7ea8c8c960b607f0954d65c94d0230813464a4db3524b277. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USUYG1398460.
DONE THINKING (feat. Gen Neo & Psy.P) - Mandarin Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36805a7e124d1642a86364d4aeb0b2fb0e5c7428c4f681b80bf8631e953753e9. 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/USUYG1413652.