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 0xae99b8cd062d456e6d302bf7880350c9bc197dd9c4225a7447f650ff1db4e823. Chain 2 (Bitcoin): anchored in block 954125 (2026-06-17T18:27:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7be42db9-a86b-4cfb-b2cf-fae111294b40.json and https://artists.proofprofile.net/proofs/artist/7be42db9-a86b-4cfb-b2cf-fae111294b40.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Moonlit Slumbers: The Soothing World of Baby Sleep
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 0xbd4293b6077a478d33eda9108de30ff25a1a20c37d49825715768f8d62ac2355. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWDE2390195.
Twilight’s Embrace for Your Baby's Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f4351b65502414797f849ef7f0df460f20b689088e2a0d73994197f335423f. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QZWDE2390201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a670965fa1ab345dfedd5d73a8d4e7f5cf9208436cb614c0830b13f894e36f. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZWDE2390209.
Midnight Whisperings to Guide Baby Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb065e765385b07019886d5b49e341f8ac25555c69f838da96cd6f6c583f94b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QZWDE2390216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9edb30c9a5943ce2d06752e02ae229e602e3b3f68b8b390bbfdf2534434e6f5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZWDE2390224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460bc750592a8191a41fabf7efe36b68daeade09541f0743708fead465aa30f0. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZWDE2390230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153e9fcb0db6ffd2e39f1ce293bee062591c2893d9a71d3943c1a038c7554875. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/QZWDE2390236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd702b30d0be731de527c1811e9cf832a234577329f5953b2f9e21a8ad14339c2. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QZWDE2390242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb75e347b8baa4abbc17d1b722a5b3c1a31378bb462cb47f05cf896ce7e24051. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZWDE2390250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05429d13542b90c0ec01367478462f0334ffa5b5e15433ce1eb94b4fc6166de2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWDE2390255.
Seasons of Slumber: Baby Lullaby Through the Year