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 0xce49a220ec73f69b99c309c69abc015153f89f2e227b668afc55bec5ec69a2bc. 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/78c50e64-7c68-4e88-8531-3466ea2e993a.json and https://artists.proofprofile.net/proofs/artist/78c50e64-7c68-4e88-8531-3466ea2e993a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
#01 Relaxing Music for Night Sleep, Relaxation, Meditation, Lying Down
Relaxing Music to Unwind, for Bedtime, Wellness, Noise Reduction
Relaxation Music for Sleeping, Relaxation, Reading, Every Situation
Relaxation Music for Sleeping, Relaxation, Studying, Panic Attacks
Peaceful Music for Night Sleep, Relaxing, Meditation, Recovery
Peaceful Music for Sleeping, Relaxing, Meditation, to Rest
Relaxing Music for Napping, Relaxing, Meditation, Memory
Relaxing Music for Sleep, Relaxation, Studying, Newborns
Slow Music to Calm Down, for Napping, Reading, Headache Relief
Music to Calm Down, for Sleeping, Reading, Delta Waves
#01 Relaxing Music for Sleep, Relaxing, Reading, Running
#01 Relaxing Music to Unwind, for Sleeping, Wellness, Background Noise
! ! ! ! Slow Music for Bedtime, Relaxing, Wellness, Calming Baby
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 0xe020b5d50435301a8f207b6165c16a49bbf70d1ab96fa9b5f213236c34aa6a17. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DE1BZ2268509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b11e890a711962fbd715afad3f1979a1ac9bb2dd659e37732902bde8ffbd005. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/DE1BZ2268475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbe6f4da4c0a52596cd9ad920b51b2728049ca447b079761d53666092984f42. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DE1BZ2268479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0501c14b1888d22426ce3c66d02d82b842d9afe365f465579e3a6a5c830088. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DE1BZ2268480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401048748470e5e76d9db0be3cbbe4f486f5acf9a7b6744b20e3ffbe6e771391. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/DE1BZ2268481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a317849c14ea2ec11dbfc2882185c799e64a4adf87ebc5030bd53f25d87be3. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DE1BZ2268482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb87967a816aafcd842001ba6d0e1f95e8194d26ed88b89308feddab399ff2a. 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/DE1BZ2268488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceecf4236b148512b0aea0ab7b2ed7484a894a15b7d19b7a91e7a88f0fde0075. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DE1BZ2268491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0e1b65f66ca37bb7ee5c4c0968977e00fcb2f10468565f06e4856105cb7319. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/DE1BZ2268494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1993af16263a2415a3fc9a2f50570b54ee4dec12ce56a7fcecd1db0729c96eef. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DE1BZ2268501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b24c06ea083af5bf043ffcf1e0ee97e96d2bcf115d7271b2fddce1f4a6daa1. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/DE1BZ2268505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe020b5d50435301a8f207b6165c16a49bbf70d1ab96fa9b5f213236c34aa6a17. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DE1BZ2268509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe805f76290db19f3e0f98b5c7174c5985595112f2c293809be70c2aa655a845a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DE1BZ2268510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe494aacacc3c0433c9c0a2b9f2f89132f91b2d239b6aa97b0b9de0453d3dbff2. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/DE1BZ2268540.
! ! ! ! Relaxing Music to Calm Down, for Sleeping, Reading, to Release Dopamine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830b5cb213e0e9d4d9f45a1c27b761f2ccb82932eecca12d16a9bb974f9e20cd. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/DE1BZ2274795.