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 0x54f50fe3f920c8b047aa7d08c0e16f02d60ae9d0d351182a9cd055da0ea5aa19. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/369b264a-601f-4ce6-8a63-39bb3ff4c606.json and https://artists.proofprofile.net/proofs/artist/369b264a-601f-4ce6-8a63-39bb3ff4c606.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 0x0b3bf86f194ac446ec59bed7beb99e1596f72f65080d3650b03756035c36457f. 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/GX3HH2335272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96a13ce0ca3f6394a246d1642d9e3d5d55bfeaf555c97740c9ceeed07652fb0a. 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/GX5MX2339901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426bc94759be3092012ba8e4b20383e4e60fadef5486731bde9820bb0b9e7e8a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GX5MX2479439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba353ae8714b43a99c45c4031c68d17ec2edfa6de511b1e55928e1e466230144. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GX5MX2401665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fd2451a8422205d478c2f8e783202d27b7c60ae17a0776641b0b2a5b1e04c0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:32:16Z), 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/GXBDS2431451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26410e550c48a55ed91ff9a74b77a1412764b97f9b99ed7825b8bde509c1846f. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GXESV2451629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25c6b56bff1d0520887ea524622d75af1918d782ef127f8e13a20b6c80d9429. 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/GXF972461187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0905acafdf539051f4d28082ef948a51ee0abcaddc5730eea761efee2f470cf0. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:48:50Z), 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/GX8KD2566111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b12d9e14d43701f54f8b7d5d5e068721cb018fed11e320e31dee759d577476. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX8LD2580280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fffcabb8e193c825ea3d4c78bfbe4486839b7e5dedbf04d0a310bca2c0af06f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:24:34Z), 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/GX38U2508610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151ae816d630990f97ab41845f88243d7d74fddab3ec33a008fa5602ad8e94a9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:18Z), 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/GX3HH2526642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151ae816d630990f97ab41845f88243d7d74fddab3ec33a008fa5602ad8e94a9. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/GX3HH2526642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759555c50e7f0bb62d01b101e307c19fd8ad603cc65e89651261ea05b450562d. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GX4R52555201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf586015d0a6ed9db659f4200bd168d708573a682f0c33070d7cc3fb59376e991. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GX5MY2578739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11271767be111e1ac87035651355c4a978cf869379a9d4e59527bfd14acb9183. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GXF972561623.