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 0x70f75fd96d751cfdf588ce304cbee96145086a7af1955548f23f6f35addc34e2. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6c00039b-7cea-4416-8f7c-93f77a05192f.json and https://artists.proofprofile.net/proofs/artist/6c00039b-7cea-4416-8f7c-93f77a05192f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Parrandeando Con Omar, Vol. 2: El Show de la Fiesta / Mi Mamá Me Lo Decía / Que Bonita Ni Que Ná
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 0xf0e9cccdb8ec52183dd86e20c591cd92dd97260897e8540bb9831bb44429d2db. 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/QZW9K2443143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16aef7968c3db33870abf5af9c3284168e1052e6dc3e23adbacbb9013f29431d. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZNJW2515352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3faff67e21b0c6c255c2a3e305b0f2243cc009c85d634d2139df23057cc5070. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:19:43Z), 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/QZNJW2515354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e71347b0a5ba8fdc6f52ed1a5651a22ea2a6aa7bed93658772bddc4378421cd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJW2515355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe769d33eb6332b0ce94c7c5dd550c5b07ed8828f24633488f7fe13f01fb69100. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJW2515356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d23c0c5569f3fb627ed73890b1bc95ca3d87f1eb827500128cd76f7944bb33. 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/QZW9K2443142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e9cccdb8ec52183dd86e20c591cd92dd97260897e8540bb9831bb44429d2db. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZW9K2443143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543ec6e85034382fef10a1ea5710d06ed295f537b69b156fdf828b775e33f1e2. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZW9K2443144.