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 0x0e1321388091d7ea607f9c08c2ee3347b1a9ae5b5c7481427d96911880d17fc4. 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/5bc39953-8963-4702-a00c-3e5380d21c27.json and https://artists.proofprofile.net/proofs/artist/5bc39953-8963-4702-a00c-3e5380d21c27.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dreamtime Lullabies: Music for Baby Sleep
Baby Sleep's Soothing Lullaby: Peaceful Slumber Sounds
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 0x42b9cec3507deb16aecc5ce929f6dac7227438b7f34797936073042de00d0e1e. 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/GBRKQ2462568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6a368eab1ef09d9c782ce276d53b726953f2fc719227633bd867351181fc4d. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/GBRKQ2462582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a5e2c71ba0498706aaebac1883bc1809a7a25e395fd08957039ef3f4cc9c0e. 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/NL6VJ2316417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479d963318392388492d55aead7a0c4c9e01331077fa186916343e7526942f29. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/QZWDD2471534.
Jazz Piano Peace: Lullabies for Baby Sleep
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6718c966da9a3cc2615fc9ed1d4a2521816556e5ddfd1f8dc0c2106a9d1aeb14. 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/NL6VJ2316411.
Lullaby's Soothing Harmony: Calm Tunes for Baby Sleep
Jazz Piano's Gentle Night: Soothing Lullabies for Baby Sleep
Lullaby's Soothing Nighttime for Baby Sleep
Baby Lullaby Twilight: Dusk to Dawn Harmonies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d15aded77e8fd30dd95353fc8e7c669e229a952218ac781e6b070b52eb45456. 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/NL6VJ2316392.
Lullaby Echoes: Soft Tunes for Peaceful Baby Sleep
Dreamland White Noise Melodies: Harp and Peaceful Baby Chill Melodies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe451f9eb29198704322bad37d116a450b2277c412ac429ea8753d72372506111. 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/QZTV32358161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a977cb69b21fd22d989a13c85af66f48b9952387c36cd2e2c3a1a09b6691bbe. 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/QZTV32358163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ea093b67bd8a5df0be496d122f390bfca40cb36ebdae98b1e87c668a11e464. 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/QZTV32358164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c10d05622ed87d1e985c1444392b8b1eca15d8f0540005806e3684c45ad288. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/QZTV32358165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb0ef190a9689a4d07fe201e4c09cf5aad3ecff804417476e0281f0618c401d. 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/QZTV32358167.
Lofi Sounds: Drowsy Sounds for Baby's Dream World
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1167249df69b91651c884a59bd1c857f2730fecc301bbd5f4193b59ea1a40a8. 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/NL6VJ2233457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736e11913b255de2228128ed553d0a3ba1f1ead84583f783e3b7c7f6418dadf4. 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/NL6VJ2233460.