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 0x1b746fe274ec69efc61ca5cc8c413816b6384973c5e4bfbd4a8258552d77655c. 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/db1c61a6-b35c-47fe-b2ac-d70704bb8562.json and https://artists.proofprofile.net/proofs/artist/db1c61a6-b35c-47fe-b2ac-d70704bb8562.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 0x43ec786a3e2f4de1a63cb8c5f26fbe8011056899b7dc90155594442a405aa0b4. 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/QM4TX2035754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126f97bb8e177bf4dde0d22622da163d21f158861d32a46f59f6682af3be805a. 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/NLT2H2200147.
Cleaning Music 2023: The Best Music to Clean Your Home by Hoop Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca687597a4fd5fcf92980b85715ae6ad1922d5f3d55e025a17fe6f05be53abf. 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/ITM2J2100049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d73dcecc06a0dee83242efda76dff3651c66ff283888fdb4f982a96e19587a. 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/CA5KR2201707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29bb21dec36a6e6a0e89c6362fce8d68e980f2696d568730de59572f5cf6cba. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/GBSMU9543228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7f77b8f5674f8d32c461d7a57ab3562eecb1937bdb886e35f868135fcb06db. 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/CA5KR2108326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58e53189392c32dcc87d91ae2f456f5b99eb45fc130533109091f7011cd90fe. 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/TCAEO1937289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89db2031cbe91546b088742ee66d9a98d9d2a0e8c36052e1b138c27a8a9e288. 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/TCAEE1913459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95fbb370886a4be3efce7f07fb0d260beafced980400045f80e830e952f8526. 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/CA5KR2341752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db5f404bbdb06a40b9c5155abf0856bfb60b201dad2d83efc8828c0273823f4. 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/ITMF12300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x330dbe67ff67881a0c39977e1dfd8525a71498a2b9c84322d2e98bb8d28e16c7. 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/GBKQU1827939.
Happy Music 2025: Best Happy Music - Feeling Good - Feeling Great - Fun Music - Funny Moments - Good Vibes by Hoop Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca687597a4fd5fcf92980b85715ae6ad1922d5f3d55e025a17fe6f05be53abf. Chain 2 (Bitcoin): anchored in block 960165 (2026-07-29T23:29:40Z), 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/ITM2J2100049.
Summer Hits 2025 : The Best Summer Hits 2025 - Fun Music - Happy Hits - Good Vibes - Happy Beats - Happy Vibes - Positive Vibes - Feeling Good - Summer Party - Happy Music by Hoop Record
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca687597a4fd5fcf92980b85715ae6ad1922d5f3d55e025a17fe6f05be53abf. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ITM2J2100049.
Summer Music 2025 : The Best Summer Hits 2025 - Fun Music - Good Vibes - Happy Beats - Positive Vibes - Happy Vibes - Feeling Good - Happy Hits- Summer Party - Happy Music by Hoop Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca687597a4fd5fcf92980b85715ae6ad1922d5f3d55e025a17fe6f05be53abf. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ITM2J2100049.
Happy Music 2022: The Best Music for Your Happy Days by Hoop Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca687597a4fd5fcf92980b85715ae6ad1922d5f3d55e025a17fe6f05be53abf. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/ITM2J2100049.