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 0xc36e9c1b83dd8bad999bcad27a57772a7ffb1793baa72e52799f2604d78654bf. 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/d6f790e8-2bc3-40f4-ada5-e3306ac159d4.json and https://artists.proofprofile.net/proofs/artist/d6f790e8-2bc3-40f4-ada5-e3306ac159d4.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 0xba4d4879dddaaf8bcd534bdda564c6994051ea02c7f6f9a3530853874f8ff5c9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AUGBT2439617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5033d1c66174670d672c736679e83f0c88dc9af816f2d1d8f2ee64cc68b6f199. 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/AUGBT2439623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabcbe31c127479d1b938bc49e81e4090c005f56fea764b4374d757f01aa81ee. 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/AUGBT2432041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1943404f14511465f76c2f17148e04bbcbfd0d2263dfd63585c442fdc258a3ae. 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/AUGBT2404742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe443bc68e1085026912096c6007c7fbd86777be5f71e32faa2949260f21e78d1. 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/AUGBT2404741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b39e3e06db3c6db102f6fad5559dd233a9845baca218d017087a6153a7e543. 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/AUMEV2488540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179b608bf8d939687d14730ec9314490ebf3ccbe28dd7e3f56c396495ac8645a. 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/AUMEV2457759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb734ab1debf3d257063d34d625bb060035ad5e7f4ba497f48d1ab76397a18a74. 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/AUMEV2442665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9964442476447bbd82d4aa9e79f51976d0a49cae60f4ae9c4df73d0f40c9923b. 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/AUGBT2347921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6f9bbe169aff2efaa1cf150999c456b73a1ad7860468264bcd9e71d89b999c. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:40:53Z), 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/AUGBT2347920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3c2d346462f449e3cab6de13aa67124aa9092bada3bee600c9e7043bdd2b18. 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/AUGBT2312013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995381dcc3d5116925769ffee1908f64e8643efc618d13d04741969686e3c037. 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/AUGBT2312011.
Have Yourself a Merry Little Christmas - guitar solo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b9a8aea916741e7b497a650d852a7999c31ce9226f1611eb520f6934a96a03. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/AUGBT2311999.
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 0xf33192b8c70343078e8497b59f2201fc79aed98eb04221dc3f34fcbd8217af3a. 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/AUMEV2396469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5758b4a80d826448bd9294d8339b092cb9367f8618be1a9b76ce07eb0dc1d441. 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/AUMEV2384309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43a4cf3ffa4030d2f8f6286315ec16736fb96d5a207973170152abf4047d84d. 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/AUMEV2365453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd827149ee2f0cbc7e98ead443009208ee38023dd1ed3656ed7d377632139e617. 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/AUMEV2345673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6329dad5ea6530f3b8cf9e7d4cab748e1ad1a2c2f2d93a70e553651f5cb4da. 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/AUMEV2345692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf58e466251b21a3fb6437194a71e367034de2813f4851ae90774eb5a033149. 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/AUMEV2345693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33e51dd323e88e2b4917506fd991663ae2e9ac99c87260261347cfe339d675e. 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/AUMEV2345695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947fe0e9766e6bea555b7c8eedf5fc6a9c58fd280c9d17ade46e57ed30d81439. 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/AUMEV2345689.