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 0xc11b72a47d5beb8949480edb8327790539f5b7c5f9f034242518abb12a05c046. 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/24fc13d5-3d4d-46fd-9b5d-8765e0240b7c.json and https://artists.proofprofile.net/proofs/artist/24fc13d5-3d4d-46fd-9b5d-8765e0240b7c.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 0xe5007c6501fd617b80b6cf2c2b28b04c0331184f99d55510ca8c8d51e4f8bd48. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNJW2197818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d35e89c0e24f11314a0ff1acd7cfc702b87c941380cd64646e4804412983b24. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHZ32283832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451d2c14933d7d7659481e3a9a0884d24d231f1ac7fb5efc9abf8698321b579f. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QZHZ32283835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993b491421d5df88e2d1743f7b3d142aef0027849bcd47c4e26292e2d413cb5d. 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/QZHZ32283837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223bcdbcef3d1797137ec33b570614d7f797e936a6938727d8caacf6dd123170. 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/QZHZ32283839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa08ceff20037b1c130e752687add6eb7c8669426c34ca02fa3d932dffa14ee0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZHZ32283840.
Ahora Tengo Luz Iurd Bryan Quintero Iurd
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4b4bd1b7777590541b14b4a9d3509db9eb65743bea6a9b6201cf87e186bc7e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZW9M2377074.
Yo Soy Tu Casa Iurd Piano Bryan Quintero
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7da6111f10b20dc2cfaa1ceb67464b036b287a5df2e7b1f0da912134fd02e97. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZW9M2377077.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a44deb8f5d71446c753d7782f1063b9e5445452e0c595deaeedb08035d8c64. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:41:37Z), 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/QZW9M2377080.
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