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 0x267ece4b7b5d6d32450eb6efebc72dc17003e1c034ee047ab7d40b5b8ff11b09. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bbd8c474-44b0-4c68-ab89-7533b81e6a13.json and https://artists.proofprofile.net/proofs/artist/bbd8c474-44b0-4c68-ab89-7533b81e6a13.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Sound of Birds (Relaxation,Relaxing Muisc,Insomnia,Deep Sleep,Meditation,Concentration,Lullaby,Prenatal Care,Healing,Memorization,Yoga,Spa))
Rainy Days with Frog, Vol. 1 (Relaxation,Relaxing Muisc,Insomnia,Deep Sleep,Meditation,Concentration,Lullaby,Prenatal Care,Healing,Memorization,Yoga,Spa)
Rainy Days with Frog, Vol. 2 (Relaxation,Relaxing Muisc,Insomnia,Deep Sleep,Meditation,Concentration,Lullaby,Prenatal Care,Healing,Memorization,Yoga,Spa)
Rainy Days with Frog, Vol. 3 (Relaxation,Relaxing Muisc,Insomnia,Deep Sleep,Meditation,Concentration,Lullaby,Prenatal Care,Healing,Memorization,Yoga,Spa)
Frogs in Summer Night Nature Sounds, Vol.4
Frogs in Summer Night Nature Sounds, Vol.5
Frogs in Summer Night Nature Sounds, Vol.8
Frogs in Summer Night Nature Sounds, Vol.9
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 0x446e90840e4fd4942887003bbd51a940ee94181e3d6a21fdeb6e10a181fc815b. 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/KRB921606391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf129412b0882bc916b3817715c1519983f5893bbb8f95b44aadef75f262786. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/KRB921606392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4017e92cd169d16589487c3e64f9a4ad60bb50b0198bfc831a70d8ac3ea6e412. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRB921606393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d8c41aed536826d542f646d35223aa83cc2f721b67148efe6ee510f278593d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRB921606394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6b0f949d7daad731b98b52b1d8d7963d6b0249e327fe97c8d57a8d878c86e6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KRB921606395.
The Sound of Night Forest for Your Good Sleep
Mountain Water Fall Sound Collection (Relaxation,Relaxing Muisc,Insomnia,Deep Sleep,Meditation,Concentration,Lullaby,Prenatal Care,Healing,Memorization)
Relaxing Breath of Night Forest Sound, Collection
30 Best Relaxation Nature Sounds (Relaxation,Relaxing Muisc,White Noise,Insomnia,Deep Sleep,Meditation,Concentration,Lullaby,Prenatal Care,Healing,Memorization,Yoga,Spa)
Night Forest Sounds for Meditation, Sleep & Relaxation (Relaxing Muisc,White Noise,Insomnia,Deep Sleep,Meditation,Concentration,Lullaby,Prenatal Care,Healing,Memorization,Yoga,Spa)
Nature Sound Band – Rain Sounds for Heal (Loopable)
Rain in Forest White Noise (Relaxation, Relaxing Muisc, White Noise, Insomnia, Deep Sleep, Meditation, Concentration, Lullaby, Prenatal Care, Healing, Memorization, Yoga, Spa)