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 0x02d6482a260d48f3cf8aee1bdc6b885bf69e97016e113688d794eb4f9fe6f1c7. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd8da382-10b4-4bf4-8dc8-15a0f46ec72a.json and https://artists.proofprofile.net/proofs/artist/fd8da382-10b4-4bf4-8dc8-15a0f46ec72a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Smooth Jazz - Background for Dinner Parties
Spectacular Music for Family Meals - Bossanova
(Trumpet and Alto Saxophone) Music for Breakfast Time
Music for Breakfast Time - Trumpet and Alto Sax
Trumpet and Alto Saxophone - Music for Ordering In
Music for Evenings - Festive Trumpet and Alto Sax
Backdrop for Dinner at Home - Bright Trumpet and Alto Sax
Trumpet and Alto Saxophone (Music for Stress Relief)
Music for Stress Relief - Peaceful Trumpet and Alto Sax
Music for Mental Health - Heavenly Trumpet and Alto Sax
Mind-blowing Ambiance for Tropical Outros
Music for Virtual Meanings - Jazz Quartet
(Quartet Jazz) Music for Luxurious Trips
Quartet Jazz (Music for Virtual Meanings)
Tremendous Tenor Sax Jazz - Background for Weekend Light
Backdrop for Time Boosters - Cultivated Jazz Quartet
Debonair Easy Listening Piano - Background for Taking Time Off September
Easy Listening Piano Music - Background Music for Acoustic Together
Music for Light Throwbacks - Vintage Latin Piano Jazz
Easy Listening Piano Music - Bgm for Chill Hangings
Jazz Trio - Ambiance for Entertaining Loads
Jazz Organ and Guitar Solo (Music for Invisible Mornings)
Wicked Jazz Trio - Background for Entertaining Loads
Jazz Organ and Bossa Guitar Trio (Music for Tension Relief)
Bossa Guitar Trio - Background for Loafing Evening
数学を勉強する時のバックグラウンド音楽
Comprehensive Jazz Piano: Study Theory and Improvisation
Jazz Piano Soft Paws: Laid-Back Pet Grooves
Jazz Study Haven: Coffee Lounge Serenades
旅行のためのドッグ・ミュージック
Electric Jazz Music: Vibrant Fusion Melody
Elegant French Swing: Classic Jazz Music and French Favorites
Nightscape Jazz: Melodies for Peaceful Rest
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 0xc986d1fa3292b93fa097fdf0ac93406e8022eebc3675f8533c18fcf8949400e3. 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/QZZ8B2451209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89431d44e8514500b9c300217dd35ebd5974392c1732440c75fdbf8379da533. 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/QZZ8B2451218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ed93880580fbb7892db0baaf3928d7d335fe6df9f309614e524acea4806187. 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/QZZ8B2451255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95a448e33ff4960bcabd5a820abef7e5e69b94e9821d312a67f51b6c0d707545. 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/QZZ8B2451321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe21ad34cfa2914963768a2e319f7448f7bdc0a100dac3a3eacc2585a989b15f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QZZ8B2451225.
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 0x36f0ec04e5305d2f4fbc4f7fb39739a68c74e9a47fd749ad1b06166bef7fab43. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZZ8B2451235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae89f74556706cf83847651db99e5010a46a957a1680bd30373c269dcef1a0d8. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/QZZ8B2451244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17435b4cb0b4cf94595813a7fc42fa8147e59a393f9cfbbcc4505b442ce9b0aa. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZZ8B2451263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3e6342a99ff42f0b90e4e0c9b65cbabf293dd8f8f786d7ce30ced542643129. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZZ8B2451271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4490448e48005b917d46cd955cb9c653ec808441ade9192e817f70bc09c2667. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZZ8B2451281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0551cfd19ab119de86e5a9fdcb83cb23768416ac8d15c18c6f9477f221c997. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZZ8B2451289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3b590ef149c030fe74a3686361b66c34bcbbabc2e87b95c5f3f85424a136fe. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZZ8B2451298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59b6a9fab05462c0cc49b07bc324858eefa4a57e5fbc4b9a0598622ef43d5f1. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZZ8B2451338.