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 0x50aa78b7fe13effb783aa5b8deb71bb49a74afa50cc32993e0f6c25df03256a1. 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/5a779667-4e64-47fe-9cd3-aa04450a30e2.json and https://artists.proofprofile.net/proofs/artist/5a779667-4e64-47fe-9cd3-aa04450a30e2.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 0xed28e71efa11e55bedbb8f19bf21e506b84ae911610a0de6b304f35a5d504a0a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:20:55Z), 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/QM6MZ1487167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8902b89f48873c8edfec8116a7cc3ef2c68e9017d9ab2c58131cab1b905516. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QM6MZ1487169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f85705b8fff73a732b9ad3675cbaea47c2abada2c022da224c8a9b0431fea7. 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/QM6MZ1487172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd17a485ab6bf462885abb31a50e14af3befc6c39a9e700d4a40e495dc8d7985. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:29Z), 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/QM6MZ1487174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af5df46a267b66486e517d3e36d594dad4784d32d5caa1d5c00070b39715fdb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM6MZ1487178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13104f6543513b732586073d3a9ec334a8ef6a60725f9cb41384d22ac1a65195. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QM6P42004266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4f97cc38797f355dbe288b4afb41f9e9b2989638af651d9f7a09f071472ed4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM6P42004278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ec83ae44079f4f5d67d613c7089d1802b9ffc80fc015fbbae168d399b66ebc. 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/QMFMF2037344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b0307df347fe4424c388a38a31857343559ed63c1cc69a1beccbc3703fe866. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX281941393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37d890bf6992d7e36737b67d12b7bd079e79e3f3c769d9ff4b360de500af7d6. 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/FRX281941394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea59ee54adae0297bfc2c2bf5bf4fcbe9d85e7a538d20089dcb6078b5802607d. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QMDA62162169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20af75e31203fa1a3581a144dd0dc69cfd489b3c9d70ba30a11301b67556d6d3. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/SE5BU2509256.
Cientos de Cretinos (2025 Remastered Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf888b069ec5c16d0430cfb66c5eaefdf72178e42a922b8123ecf106ff1a86d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/MXD781902001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d598bd8e05adb130f469bf98db2b1f9ca352b3d3457c8c88b3caf1138e174d7. 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/USESK1329168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3733e58f721b94e4e387736ae52590163abdc2862b83ff61f5ec306a4d129cd4. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QMDA71474953.
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