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 0x35eb8d397cd00b078bb4f02a3fec03db1b1fc086ad7ced346464afd56ae82860. 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/b9259dac-5a6c-4804-841d-057a70aa2730.json and https://artists.proofprofile.net/proofs/artist/b9259dac-5a6c-4804-841d-057a70aa2730.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Music for Work from Home - Tenor Saxophone
Simple Bossanova - Bgm for Work from Home
Tenor Saxophone Solo (Music for Lockdowns)
Bossa Trombone - Background Music for Breakfast Dates
Bossa Quintet - Bgm for Classy Restaurants
Music for Ending the Year Right (Bossanova)
Dream Like Bossa Saxophone - Ambiance for Meetups
Backdrop for Egg Nog Coffees - Refined Bossanova
Sultry Bossa Saxophone - Background for Road Trip Cafe
Sultry Ambiance for Pumpkin Spice Coffee
Divine Ambiance for New Year Reflections
Divine Bossa Saxophone - Background for Ending the Year Right
Music for Ending the Year Right - Bossanova
Funky Bossa Saxophone - Ambiance for Classic Restaurants
Happening Music for Gourmet Food - Bossanova
Wondrous Bossa Saxophone - Background for Bar Lounges
Extraordinary Bossa Saxophone - Background for Brunches
Stellar Bossa Saxophone - Ambiance for Bar Lounges
Backdrop for Fresh Coffee - Bossa Nova Guitar
Backdrop for Forgetting Time - Spirited Harmonica Solo
Smooth Jazz Guitar - Background Music for The Rewinding Times
Simple Acoustic Smooth Jazz Guitar - Background for Forgetting Time
Mood Para Lo-Fi: Pacíficos Tonos De Lofi Para Una Tienda De Café
Bossa Guitar Trio - Ambiance for Soul Sounds
Wondrous Music for Infinite Selects - Bossa Guitar Trio with Jazz Organ
Brilliant Music for Chilled Essentials - Bossa Guitar Trio with Jazz Organ
Lofi Vibes: El Mejor Ambiente Lofi Para Un Café
Soundtrack De Lofi: Música Chill Para Un Café
Soulful Jazz Music To Spark Productivity
Harmonic Dog Reverie: Jazzed Piano's Melodic Bond
Melodic Insights: Harmonic Piano's Serene Focus
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 0x4111a8ccd42225bf494f2ff219306dee425ba65000695ebb683b2e02ca26053f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USLZJ2407483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468f3a875eff108cde444dbbba5308497b6d3a4b781ab89c964687e42fa047d6. 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/USLZJ2407514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c90fd7e0a031236d005ba741632d02c629e165c7c871fbc580d77b59ad5990. 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/USLZJ2407522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2266fef298bdea4017834304dc093a1ed9ea0195e06d43e7141c4031133a5a0f. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USLZJ2407475.
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 0x3c013b3be70dbe5fe2e545ba72146d28f0934276fb3df84cfba9d1b30603dc92. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USLZJ2407491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a75b2032f649e0ef39912fe12016a6ab539fbd3a47dd2c574ae187ef286a556. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/USLZJ2407499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8eb7c0701acb97f5eb93221110597142fb7c16d6d4ca1c18bd8f36bf36c0b56. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USLZJ2407506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd33bea6e6ab17ea47c35ca80cb6a3402611394411e7536d4767bd82cd01a6d7. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USLZJ2407530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1faa69b771b3d4c4651781293f35485a3238a88ede3b74bf60bcd93283af997. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USLZJ2407538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7e55c520c9c21b4c7c85b077b2fba16f15cf0e53d0f4ad8fc766f1082c90ca. 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/USLZJ2407546.
Bahia Whispers: Easy Listening Bossa Nova
Tranquil Jazz Euphony: Café Lounge Serenity
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79799a5bf28b52143931a9e6a33e923810d28c3ff03135b3c3b66e356074ba7d. 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/QZWDD2380219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2721cdd891a6da514a5357f53002d3025edbf53ec530e8077c87634eb52d4148. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZWDD2380223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab5a4eb6ce1c92ffb452143e27fd2e8e0de2904f207613967e65661373349b2. 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/QZWDD2380228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa68f1b4f869067530fc984b1c483651c95667f2c427cd4349474e54c87c842. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBRKQ2413064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35b70180f73d7d12065b8025c74a357470be768b3584ef7eb19117d93db80b80. 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/GBRKQ2413090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db3ceddec86e2f89a3a5af2b489246b0edaeb976470892bc7500b7f58206fec. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/GBRKQ2413098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765ca38cac0320f0ad1d019ebed37d1cc15d9c396f3f1cfe7c069853521dd43e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBRKQ2413113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51983a816a1aaf11b35c3893331a0d44edb9d7338d34ca61f6803b94d74a7b7. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZWDD2380236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4f24688a2ad7fec2fdbd8925ad93f790f39741bdfc14586cb77fa93d5ca58c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBRKQ2413072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077679469dec8b14ed66ce1a50c3594959fae979c2cbbcdd77db9e0b3a5bafc7. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBRKQ2413080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98612c061c7d85060b22c7700a7d7adacc94973b46368c1cdb70380f475bfe36. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBRKQ2413106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685040bfa8a8d2bfe8c2adf73b7cb724b4370e02037ccad5e6f6a4b73d041c46. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBRKQ2413122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c014be04659a3b4635cc713222e72f433322b6a1425e8173213a31b7e7ebc1. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBRKQ2413129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb34c8fda7dba3881e333eaaea0061a97152deeb8bb1e3bd787ee0f2a4090b7e. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/GBRKQ2413135.