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 0x466701926d785887746806b93fb99db8cc5e4a760b977018062875bae0da945f. 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/6d58c2b5-8ad8-4c6b-b5d7-1b69a86a91b3.json and https://artists.proofprofile.net/proofs/artist/6d58c2b5-8ad8-4c6b-b5d7-1b69a86a91b3.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 0x8e44a61f404ab49fb57a706a5b8dc7b958822b87acdbdc5f08d8228b499efaab. 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/DEB331022101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb101caec4ed33cd21cc73172cb79b5c57d35620f6456c30703b2c28e6a089c8. 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/DEB331022107.
Concert In Athens (Live In Athens / 2010)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab8d101a5915e4da88a199e966e4a5cbe6203102598faec0cad65cf0eca0a73. 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/DEB331022005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d11f9e7c4af0ffd8aa6c3993b62de9cba026c1966c6b1e6113287a10b0f894. 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/DEB331022010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc916b208b295532c62dedb63f11aedf30f261a2cf983b916e7ef4202ed6cbe. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEB331022011.
Ulysses' Gaze / 10. Ulysses' Gaze - Woman's Theme / Ulysses' Theme / Lento / Largo / Dance: Dance - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1af9c28031f6a450a7eab2441e7a30810e7d081abc56c57910dc950804d0cc. 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/DEB331022017.
Karaindrou: Voyage To Cythera: Voyage - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab8d101a5915e4da88a199e966e4a5cbe6203102598faec0cad65cf0eca0a73. 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/DEB331022005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d11f9e7c4af0ffd8aa6c3993b62de9cba026c1966c6b1e6113287a10b0f894. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB331022010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc916b208b295532c62dedb63f11aedf30f261a2cf983b916e7ef4202ed6cbe. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEB331022011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6142cfc838b10c578ef04600dd0d0feaf78b299b99e70476516034ad721158. 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/DEB331863410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d72368179d56c715ea95b27f48c5866e372f6ab194495c769971d335f5d171. 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/DEB331863411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db4b826c58636e95638cf2d21dd55d546638bc7ac278b7e1290710c368ad191. 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/DEB331863414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414967d0cfed8df0375bcf96a912721eadca4b136dedc7eb0f755a5edf22c585. 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/DEB331863415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ceede8ac83c81854e908e2b0db3ce7e8ea6bcb9575405613a7635949d0b368. 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/DEB331863421.