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 0x7dc7d25281015a2b8b742ac879079ba5a4decdc04e189ae2521394a29f1fa6cf. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3ede54b-0d69-4645-900d-7de04c08700f.json and https://artists.proofprofile.net/proofs/artist/f3ede54b-0d69-4645-900d-7de04c08700f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x63f954160877eea83d85879accbd81e9cffbcab50427ca5ef780b5c9d3c064c4. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:45:50Z), 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/GBSMU6556279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3947c905016519395a79773ae82da26f70eca0979cd0780d670fd7f516abe1ba. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/GBSMU6556283.
Piano Jazz - Background for Family Vacation
Music for Cooking Together - No Drums Jazz
Dashing Trumpet Solo - Background for Cooking Together
Jazz Guitar Solo - Bgm for Fresh Cooking at Home
Magnificent Background Music for Baking Together
Bubbly Jazz Quartet - Bgm for Falling Asleep
Music for Weekend Parties (Jazz Guitar Solo)
Music for Weekend Parties - Jazz Guitar Solo
Friendly Music for Falling Asleep - Jazz Guitar Solo
Smooth Jazz Chill Out - Ambiance for Earthly Relaxation
Number One Music for Earthly Relaxation - Chill Out
Sumptuous Music for Summertime Springs - Chill Out
Jazz Organ - Background Music for Lounging with A Book
Jazz Violin - Background for Sunday Readings
Jazz Violin - Background for Breakfast Jazzing
Superlative Jazz Quartet - Bgm for Favorite Lullaby
Music for Virtual Atmospheres - Jazz Guitar Solo
Feline Cats Harmony: Purrfect Jazz Piano Tunes
Música para tomar café y pasear por la ciudad
Paws & Jazz Harmony: Lounge Serenades for Your Furry Friends
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.