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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31add1e5fa1a2acffc7548e0e131d7fefdbc1a8bcec77f7742ad8436f823a34. 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/817de142-7ec4-4977-b016-665fce39be1d.json and https://artists.proofprofile.net/proofs/artist/817de142-7ec4-4977-b016-665fce39be1d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Heartbeat Sound Effects: Relaxing and Hypnotic Aid Sleep
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbf528a64e5bce87cdac18d9c48d33a62748ac4bbaeb0905bb4b49b8a8b5d69. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5CV1851862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed1579a9851d40b79b4aacb1048280a13a881446c52d7fa6449f84a481cbeba. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ5CV1851863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52b634f26aa6b00a13275ba85a4dc2d7d2aa2b5f89828105e9f5e5a7907f69f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZ5CV1851864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e70e32320a4a3515f2688a2367356ff2e9a0f22750b2ee294d6a604ab344ac. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZ5CV1851867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3dc7d446aaada4f9c4ae85aed7a03cfb47261c00e2af82275a55628fc8cc2ff. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:54:27Z), 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/QZ5CV1851868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800e41f585eabf25f9d8f7dbb0a88757264d67c01736ba510440d02eac0773e7. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZ5CV1851870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700df66b17e10d0aba2881ff1a292087ff28cadd49da04885b5d37026f575856. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZ5CV1851871.
Different Kind of Train Sound Effects: Train Sounds on Track a Rainy Night
Horse Sounds Effects: Galloping, ASMR Horse Sounds Stress Relief, Race Horse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be225d844c4eaeb775c3ede48819cbc2b0321a13be70f594042a64ef1e65479. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:31:37Z), 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/QZ5CV1860787.
Buzzing Noise of Bee Animal: 15 Track of Nature Sounds Effect, Flying Bee
Nature Sound Effects (Waterfall, River Stream, Ocean Waves, Beach Water)
Soft Pink and Brown Noise for Meditation, Relaxation, Sleep or Focused Study
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b90150b290f76eee6656384ede21d12ddd2feb046443e3652fc91770f9e45f. 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/QZ5CV1893715.