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 0x48c0e45e2a6bfc5d7d4d980de2c22e012bbaab35d6e2540cce9e2a2051ceae20. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/196b80e5-3776-4c7d-86af-18b1bf36114c.json and https://artists.proofprofile.net/proofs/artist/196b80e5-3776-4c7d-86af-18b1bf36114c.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 0x4bbefd817f15133cf57890f52ec4cc1f916e7371897bb4261fa5807dc583a23d. 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/BE8LH2200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d6ed79cf769248d1d7ffeec11d98e26239157a5aeaa28705e7b622482e4442. 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/BE8LH2300404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6908e2315ab088daa67599d111010a387998fc7f85ee093def2c758b6ce2fe3. 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/BE8LH2200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ad4e64ec7768d3216823aeec571a7a579eb67cb8e01a41ec47b88000866123. 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/BE8LH2300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bbefd817f15133cf57890f52ec4cc1f916e7371897bb4261fa5807dc583a23d. 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/BE8LH2200163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff26a1b1c930249d512a8166f209438086faa3bc0ad076b16266410773432358. 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/BE8LH2200112.
Lounge Covers Of Popular Songs 2023.03 - Chill Out Covers - Relax & Chill Covers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6908e2315ab088daa67599d111010a387998fc7f85ee093def2c758b6ce2fe3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BE8LH2200087.
Lounge Covers Of Popular Songs 2023.01 - Chill Out Covers - Relax & Chill Covers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff26a1b1c930249d512a8166f209438086faa3bc0ad076b16266410773432358. 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/BE8LH2200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6908e2315ab088daa67599d111010a387998fc7f85ee093def2c758b6ce2fe3. 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/BE8LH2200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a4df747e10996590dd8ee16e651ce5133717cd5f502b3bf05f68f5768b5271. 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/BE8LH2300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7c2c1ae8aef252fd70af6ede41745ab10df019612fffac55deff0968758b9d3. 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/BE8LH2300285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ad4e64ec7768d3216823aeec571a7a579eb67cb8e01a41ec47b88000866123. 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/BE8LH2300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526b1deb5bf16e0ba68902a14a1f013ef2e5beb132e5259c40c6423cbdbaeb13. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BE8LH2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2700464f8bb15823c964c6f612111014fc7004e983a77d4645a91f4e6a8b8bb8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BE8LH2300346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70da7cd57bdf2483b864ca9bc9b360d3eecc218852717f3cede303984a7408ef. 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/BE8LH2300076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d6ed79cf769248d1d7ffeec11d98e26239157a5aeaa28705e7b622482e4442. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BE8LH2300404.
Restaurant Lounge 2023 Vol. 1 Background Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff26a1b1c930249d512a8166f209438086faa3bc0ad076b16266410773432358. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BE8LH2200112.