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 0x5613c3db009e055b490efda8d7ddde17c3fd5d26b3944ce71f548272591250da. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d55bdabc-6393-45c4-8df4-0c84ca12a420.json and https://artists.proofprofile.net/proofs/artist/d55bdabc-6393-45c4-8df4-0c84ca12a420.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Paws and Whiskers Serenitas: Music For Relaxation
Pets' Piano: Harmonious Sounds for Calmness
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 0x53abf32e7119682d9a610bfd85c695a3f8c72ff9d34c594d8306b94ea11a1103. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USLZJ2477255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f12c39cfb1b2411583c155525f203e30d350ea47e3ba55409c89d51a7436eea. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USLZJ2477264.
Relaxing Rain for Pets: Soothing Nature Sounds
Companion Melodies: Relaxing Music for Pets
Music for Pets' Relaxation: Soothing Melodies
Pets in Thunder's Realm: Soothing Sounds
Music For Pets: Playful Tunes For Your Furry Companions
Music to Calm Your Pet: Firelight Harmony
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cd47194afd6492700da66510a87de9f087214be669ac9d0df68620e287ef11. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZ8A2379036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a352be8178d834c8acbb70af711fda20f66fe0ecdc64083d6fd8cad3d2997af. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZ8A2379044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca6ec393c4c2d13a5706201172aff5fb072e278092787cfc72f26b0366a19cc. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZZ8A2379059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39beb76524f5f63936e2f8dcaa56d3d0158fc455e924c5b21e387be6161e547c. 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/QZZ8A2379065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752af900234b5df4aff8289d2a6a2d7c111157626b05d5f118488c10b43d09ff. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZ8A2379079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23800c98ded77516daae5f3c55a92f4550cdd165a24fb0be11a7b66089cc0f8. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/QZZ8A2379088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdede2dcc1be101628353006af2a53ba81be17725ab12e1f97c1abf6857c4851. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZZ8A2379095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc841e836dc7f94fc58205efdc8dc7c28d756b560669eac56aeffd7d0a5b2a3a. 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/QZZ8A2379102.