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 0xfdf5d60350d32aa1c411ca9a63c4b227e46680f6d1b694507cb03960e216b75c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b95dceef-34a9-4252-9ad0-ed8785320418.json and https://artists.proofprofile.net/proofs/artist/b95dceef-34a9-4252-9ad0-ed8785320418.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 0xad1ecdbfe77d02ebc6a44563288395fa9bbbb7446a2c5b1bcd835f0cebaab50d. 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/GB3UY1100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ed93df79b87e0075fe1679cd171534f60d8f86ec49123a25a1364392453566. 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/GB3UY1100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26eb9053aeed9cfead10dfec7dedd42ec32fe90fc9f2c9159cf6f9fbf219109. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GB3UY1100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1161980e987eb6c21dc1c2be61944f917511c6b79a63a898d51307e27c7c8fc. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GB3UY1100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f52dfd7b8b79f04c15b90194b266634df483a6d934605af7599ebe30b95ff84. 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/GB8S21200002.
I Wonder What Is Keeping My True Love Tonight
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109a9f3f9aba2071549d3cf102d92a0504b33df8455893246c75d4028004bce5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GB8S21400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2abb4da239fb78f980763d8ca25121614050b36a8f16544e1e8a11839a6c6c02. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GB8S21400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4606863e658d60cfdf546e9736d318be97685d90c3e17ebd55e7c2b9d33720. 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/GB8S21400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19415d3df8623b0ddbec12fad75e64bcff304d97a46b98d0d70682d5fc5cf06f. 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/GBCVZ1700217.