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 0x73d389f79f6683c2d9b6c4a1831406e5129446ed40fa3fc2ac89a945056b7c15. 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/f21842bc-b690-43b2-89dd-c26b46d5c624.json and https://artists.proofprofile.net/proofs/artist/f21842bc-b690-43b2-89dd-c26b46d5c624.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 0x915f2906063169ea7706bc8f9f2856c3292abf5d3afe5be587c832b7cd4c4bc3. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/BCY0C2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd840b4cb0a86a33b90fdb071fe45b338e7967204cd114e3081f3114dc4136b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BCY0C2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cb23718e03e928565efe306e8a3511fc3d64b004f85c029f82c4e0a8a037e5. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/BCY0C2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf473fa9ec3727f3a33e3369a56587ac067c44501db2ea4bc5a07bdef8e5ed3. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:37:31Z), 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/BCY0C2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b1bf4100955803c782cbaf9d3e03c9163c062dbc0e71bf00566e2fa8039ba4. 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/GBWUL2312783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117eb87d209cd06bfbd53051ded5fa933a1f34a9b1c73dca8c7d6201b9e3b3ad. 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/QZWDD2420364.
histórias de kebrada para pessoas malcriadas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46182c5c2d5781f6a83bff8aaf354cf51e9b60867904247292e60a731af84ce0. 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/QZWDD2570358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a8b2e86f14ba13fd82092d15deebb9d50373f427e55d3983ca629222c37e72. 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/AUMEV2578096.