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 0x39c8906f84ad257e30bf38c3445bec23beab906528c5a5f31f289bf85d4e9960. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c096354a-77f5-4ee5-9ef7-63b404952739.json and https://artists.proofprofile.net/proofs/artist/c096354a-77f5-4ee5-9ef7-63b404952739.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Easy Listening Piano: Sleeping Music and Sound Therapy for Relaxation, Meditation, Yoga.
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 0x08ceded84f023fd8a825dc3b6840d5cccd7c2c1e3d53d29eb5131885bb5ff4f3. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/NL3WF2007220.
Clouds Flying Over the City with Thunder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d74b113dac7fb55549cb899db0555d7a78f0ee1103b9b1519b94ab9bfbbf63. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/NL3WF2007260.
Rain Showers after Sunny Day with Thunder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf746dd4ace55d7d28ae7cbba53b43d203fd3b233b9b14e7c53600155791dbd01. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:28:24Z), 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/NL3WF2007222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d99e700a42fb43738ec0645a9ccf1ed1ef360a95f5d1f43e8df7ed471a78c09. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:58:40Z), 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/NL3WF2007230.
Enjoying Rain Under Umbrella with Thunder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fced2061b8ae01c078edace928a30e9550e9fca3d6763b54b6e6cf9ed43fc3. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/NL3WF2007141.
Babies Laughing in the Heavy Rain with Thunder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786d4929925fb1a156ab2eb1ca067c46909f5fffcaeb17456ee18a43e750e648. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/NL3WF2007128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0eb67db76417d3d157f2928ee977b7c81ad9e95d1ceee902603454501840693. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/NL3WF2007181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc7307c57460690930441e9756245737e6528434354de9e33d111d4cf81f8b4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/NL3WF2007207.
Distant Rainfall around the Motorway with Thunder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf532b9f56bb405b001128bacf70168ebb71de6540931ae9f40d6085b20aec6e5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/NL3WF2007188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be6acd7a94596f2f64b26111c14e3dacf1eede878da9ef3bf075a6c5ccfc37b. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/NL3WF2007169.
Dawn Breaking over the Valley with Thunder
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0547b5a7f7ae8f8b07436c5fa5f232c3d26696fdc2edae8c6442bc9de1a992b1. 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/NL3WF2007185.
Rain on a Tin Roof Zen Relaxing Sleep Time
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25467199b13ad94b51408aecb797227bcf2a153a29ac1d898d929dc65984c154. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PLS102015346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e8834210c6cf2c2a0ee66edb42fc2b7a7e0e2cfad3803fdf73ebf02d3b5ab6. 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/PLS102110159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75c3f1f93f53988c2e1d03e3c43b5c806b6ecb01c2d53bd82d8199aac7f2764. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLS102017727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1aa345d2c43d49921c7690067be778bb8daec82e61c94b1c64f56a5c86d0bb0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/PLS102017729.
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 0x9b7c9148daae33591b8813f51801cd18611897de08224abe828fad84b57aa988. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/PLS102017730.