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 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 0x8447241995d92fec71634b4f0a1a6b6b21c532bbba41b8246c298e62beed5c43. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d431760c-2e70-4da0-ad24-a99ebb859176.json and https://artists.proofprofile.net/proofs/artist/d431760c-2e70-4da0-ad24-a99ebb859176.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
50 Lounge Bar Grooves, Vol. 2 (The Best International Chillout for Your Relaxing Cafè)
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 0x1620fee2afb2c8abd1f629eb833b51845e20c8fb103ed824aa8a692f49202b09. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR6V80493133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2705fe3147a9ef91129a15ea5a452cccf16731173d2ae7ec763d1c64254daed. 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/FR6V80493143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063192a590d9e2c26f86a2c57f147a1627b4534738167d03a109502a197d2213. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FR6V80493145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cd4d490a971a5d1529f79f8b0a164d39c8111b418dd532d1b56ddec7bd92ef. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR6V80493147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db7ec7423f7ca71aa339bfb11e067d1aef6f32e8720b7f598335e3a0f16629d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITR550901035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6485770a6ffef035f894bded334d1f7800d02abc6928790a6b0913f6987c7d8f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITR551300158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83ca91231fff3f466d14ed8808e405bb8ac03348a948647bf87194ec5073d60. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITR551415052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba6a67fe8e0008f9ec5c2d87629955a44e0c21b0ae895a0e1e826bdedc68999. 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/ITR550800076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a67d2f8f6cd1f1800ecaf7e435c2d2a3fb2dc3b190ad8c034073c043a75d9b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITR550800080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d56bf0c268f5f5953286280e7cf0e3c08d1e9046c0b108645f45c1130dd8e3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITR550800089.
Best of Erotic Lounge Music: 20 Selected Songs (A Blend of Luxury and Exotic Songs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb543ffd87b77020a382f3abd7d1861680ca260f75841b0043c57b72d2c9b93cb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITR551000291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe3c02b0b6344828b36db3881db437d85f93fb7d1ad95348a8d7b167d869c20. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITR550901025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8560d36ede9a6d3e5d133ad229b4c07259f0e41c298c3bed46f5827171cf28f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITR550800131.
Bossa Nova Music, Vol. 1 (Best Of Brazilian Relaxing Songs)
Café Brasilia: Smooth Sexy Bossa & Samba Sounds from Brazil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a82525b35ad5528312779b67223fb5f477272320b661c8c08d32e826f0fe5a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITR551316507.
Latte with Lounge, Vol. 1 (The Café Lounge Sessions)
Ultimate Bossanova Cocktail Collection 2012
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42190e5dec11fe115313a1daa190cad5f8698d02cf71300ebee5657d83227c1f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITG201204615.
Sunday Morning (Soft Music for a Lazy Wake Up)
Cocktail Latin Jazz (The Perfect Bossa Jazz Lounge Music Playlist)