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 0xfbb11c1aa0bba2f4ae686e2c298620917bbc9c0771c62cf9c5519d7b8f7192d5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f30142df-7543-4b0b-9b66-b3a4f02f8e27.json and https://artists.proofprofile.net/proofs/artist/f30142df-7543-4b0b-9b66-b3a4f02f8e27.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 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 0x71092c11f1a93277ee402748e065ad219495872437ed63e45dba4f4a4f9fb737. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/BGA472402301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f4c8097cbf7a0105e8a0e92a134677e190d336e52afffc8074c23ee88fe525. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/BGA472402303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda5f2a04d7becccb029249e70d4282962c4dbd267c02573cef94b89ff3c59d1. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/BGA472402302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ed20216d85302b051a802c5f1c4d1044c035992802580235b21a53f0009fb6. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/BGA472402306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11deccd2aabfe9181a996941efd9264b6325797fd816aefee58d94371029764f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BGA472402307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17fd1aceb69a86b8fc2954325b290ab48bd84ca184158070aee6c8a96c89bbee. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/BGA472402312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85211f6773eb9e82ec3a579f6cefec653a1d3f09059bc7e647614bfcc7a78db. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/BGA472402300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb2a6723447e533a3239fde3d8bd0e6b3aad0f6f8602ec1bf02e336fb77fb50. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BGA472402315.
Background Jazz Per Il Vostro Ristorante Italiano o Bar
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f4bd6714a0a55d44715b8e33f1d7cd0a45ea774d33fbdbbfa14f0bb4a41b99. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/BGA472401984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf2c6c7b396c07708a92effe3429391f9359231b149bfe34de96607b3c51092. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/BGA472401977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91d7097c0c6aa02793e68dc960e92ef71bb89aed9863574caf89f5f0e2e0358. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BGA472401975.
Easy Listening Jazz for Your Trattoria Italiana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bd34abc8f6e5588b61a2656e1cf28f678f1ea0102275afed1f1a8a9d38e7cc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BGA472402069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7837b7974ca130d5057a234b617b704a8b1e68cfa02e96b8553828fad645ab5f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BGA472402070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0b5964076989bf0798d67d0121beec030cf3b089ed168ca9e9df5b1bef0720. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/BGA472402073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2c7b5b6bfbfe904e7569a0954857656f7803362c8a8dea7da9f450a4c256a2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BGA472402084.
Relaxing Jazz Music Atmosphere for Wine & Dining