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 0x6952112de436b7e61cb089c333b9b0981bd1c657629e160a9c84adfc5a494877. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b55b82d-5d82-4ed6-a834-32334ec4da9a.json and https://artists.proofprofile.net/proofs/artist/9b55b82d-5d82-4ed6-a834-32334ec4da9a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Soft Slumber Melodies: Peaceful Baby Tunes
Soft Night Songs: Peaceful Baby Melodies
Little Lamb's Dream: Sleep Music for Babies
Sweet Dreams: Peaceful Sleep Music Babies
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 0xec901469567bb46611de80c90fc2fd0a360b512d74c078bf40bf38f3bc3d9e01. 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/DEAR42589953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc832bd22d6d076451f4cb9c3ad2b32db167a5dcc9d8e08f01702daf9dd248d0. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEAR42589872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e1580dad62f1491eb95142a93decacc74cc5aa846fad16da27333fb5c1577c. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEAR42589985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdbfd7202f3646795a4df5711e2c481365291b4cc4e0ca8bfe89fe86f74e564. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/DEAR42589804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df24d760425f2d07a02dc35056a51faf0c935c56f85095d5b4d5d482c51cd66. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEAR42589864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11198a6d5fa4d54749654f4b373f681d3f300d7c27cf8d65099385ef9d4dc0a8. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEAR42590025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0780200eae2e2934998a264622a6e0556b03645b870754c7211ae6ef2b0f4ac. 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/DEAR42590343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7e4a0c732f2cc9fb72e7752b2133be521e3b184b1c196fb609a1368f24a743. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEAR42589795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1718b757acaf97b3f0243f6c30ba6d2ea419f9bd35951fdad053afd7de736f0. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEAR42590325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7757dc3116b6251b8a485da22a15018dd4b94a07df0f88cf0ff2c716c52a6ee0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEAR42589797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab14bf63d2b047f9f2c902f02f11959eb9f6e662c9c0fdea749cd87aca6b4416. 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/DEAR42589961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0a641c57ab56a5aefb35c4aa641cddf1775fb814371d7c55b5fa763463dc8b. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/DEAR42590079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205e5a8debc8da66cfacfa4c4e5bb969e7e00c601470d817a5ad5cb9d0fca144. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEAR42589806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7613d5237344242d33eb040db9918693618b6f91cff0d09e2759f35a8d7a5f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEAR42590104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39caa72b9edf6c59bcbb2e3076addd1017134132d28cc469e582f2f9cd4e19be. 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/DEAR42589761.