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 0x7b31590de23c38433db0849db8593808a3c2f4a608799351fb12e146b8e62f1e. 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/6a1acc16-a62f-4714-9248-98389d8ceed6.json and https://artists.proofprofile.net/proofs/artist/6a1acc16-a62f-4714-9248-98389d8ceed6.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 0x5f5a82176d86739026066ac3543a6195e5f3db48409490fbe2f4b3b3925d4458. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/USDXS2100600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948eccf45c6a0662952194c8b586ff661252825362f24e0174b91af5796ff824. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USDXS2101219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ac4f3fd5bf9634935b88b3a262af80adf143633e069a75872ad126bd7331be. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/USDXS2203523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0707751b42c07c80000dd89aef56c74f63fc65ff1408848b858c176a26a1e7d6. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QZ9QQ2200077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e79f454089dabfaa177fe43f0f866f56fdb6f706eca8d5deabc8d980428fa5. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZ9QQ2300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9ab5311197cb79a58ad11fb6360d009f7cdb117732bf5fa3c1fb2dc16bd878. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZ9QQ2300416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae24c2c9aea02a9a4747985c584cb0db562c745858d09c50064003074b19b377. 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/QZ9QQ2300399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3666f1140595c1f69c1b5d3044009b5a84a2255e1f508a70be4b6ed5575ab39c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZ9QQ2400156.
CONCIERTO HUMILDE - IVONNE GALAZ (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde588560e9b05d4ef7b2f1c6518ee4cee193dba75e9ef941e39bfc48c0c460f4. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/QZ9QQ2400546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e04aa84db10892a2f9e9d603b6fea5d330f3e03fb789454ce40bdf6bd1a6b8a. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZ9QQ2400662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf7ff9fc5ccbab5dd48ede59a1669acf9ae537e71f3044726d4eb5cec8ac3ea. 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/USANG2524318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c775ec9a5da8ea66faf9612959f548a7cf85bb2db4ba0d75a6cd634864c0285. 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/USDXS1911818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17999e89c08a70f5693f229958350874471429558d1b6ca0fd305ca0fa094bce. 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/USDXS2009617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3174788c79381f618f25e8260c6c74d67b2b8cd9ffdf66a4ac3bade50a24bec5. 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/USDXS2009621.