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 0x17359220eaacc37daaf75b4f01b5486324a2a2c010b8f9b2aa12a5c1f3ad50b1. 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/b695b337-e8d3-4dce-8856-d7efe7fdc07c.json and https://artists.proofprofile.net/proofs/artist/b695b337-e8d3-4dce-8856-d7efe7fdc07c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
5,000 Candles In The Wind (Bye Bye Li'l Sebastian)
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 0x05a6e08ce16a31698e1ac32ca8322679d4873ff4c6fd98008dcdccf108ddd3c7. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USDMG2129901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d494516dce45e49ebe42ab12c234cde27a7f6ba0de9c3625260d44c5bebf42. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USDMG2129906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80606ba931f10afe2122ba2b3ce435aa982c404775082ed9cda912ae0f56ca8d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USDMG2129909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7205a0e07e95ab61080e15b451107e13e2e813ec0465f4145289be8045ec93a7. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/USDMG2129910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2ed055c1f8b2d34a91d09eb9fdceff23107d8579ed6cac983d15eaf313d963. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/USDMG2129912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3792ead379344ded6dd71baf559693f822621ebd9828f473d40d435a29766a59. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USDMG2129913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x551e3151e90e75d4be9ec4e9e69f06dae15c849d70b034f66e5c01fa98b67067. 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/USDMG2129914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27caeb8a3cde43d988a36bb7c46dde71046f7a0f5a6d8fd3b23a91853dbe0a6c. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/USDMG2129915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba571e9f9a4c3e51d6ae2384b84048ec20b15d1829dbd96f2cf56ec088c44fc2. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/USDMG2129916.