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 0x0e10d088fc0968637e21868aee49ee16e5615ea0be897238f609ef413c77fbc6. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b4e6b0da-760c-4f63-a708-6afc93bfafd6.json and https://artists.proofprofile.net/proofs/artist/b4e6b0da-760c-4f63-a708-6afc93bfafd6.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 0x03ab526f43235565fb0c78b19d6e00938f87d0169326297c29216b80d0722ebe. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZFZ71911400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d15a077566ab0df55dab47d3dad8cfc9a8cb704f689882ac29a1b85854cc57. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:02:24Z), 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/QZFZ71911404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf145bb43ee796267f6b64ccfd54fea4c72b31a6e726659a1b1b26b5e0324a670. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:22:15Z), 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/QZFZ71911405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdca242c5e56dcc290307c7300d31f2238d77bb90c576fa73648e145ca0d38f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZFZ71911407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11daaabe7438b831bc9ec74bf80da00c634bfca9a311411d0ddfe333ce637ba7. 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/QZFZ71911408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8d3cae4eb023aa5b093a01131b8bbac55a01d23b003c28590081c605d60610. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:17Z), 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/QZFZ71911411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2707504b528e380fd5b2c87f4d621cb17df5aae2fc49147e5bf9adc84d6aa29c. 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/QZHN82010497.
Orly's Chantey / Welcome to Darktow (Critical Concert Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba25c0631cef57fbd724b1c55721511c0d9fa66ec5dc19fab5ce2b896c0456c. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:32:43Z), 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/QZK6J2360891.