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 0x712671952634b458b8556c1f156ad2c8461c6540e7f3f14662c9d83624987dc8. 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/2dfd8731-3905-49e1-a935-22cc30c792c5.json and https://artists.proofprofile.net/proofs/artist/2dfd8731-3905-49e1-a935-22cc30c792c5.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 0x1a6c8908077597bc5d140b379df98d29c44f5e59996515f8d973a322c4f043c3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GXBAV2345399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef740f17266a491cca9b4ca4dc52c3b49da11e151abc4bbe9f06ecae1e157fe2. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:54:18Z), 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/QZDQH2438218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822c65553e29a913120b17710b413b5f111638ab9d0dedb1ca27d1eab25a8589. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDQH2438219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1844c33a65a39a1fb45eb3015a6915b0e309c317cb7a770327b8d0df765d1dcf. 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/QZDQH2438225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f49a2c70e8653d3a6084ffa2928d3a4051abc9a7860bcbec446f212be6ce43d. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:19:08Z), 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/GXBAV2528330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf987a9342534adaa4eeb44aefc6975ff844a168087ad6b6aeb5abf19c0f40a68. 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/QZMZ92572694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88d528db4eb8642a00d48fd745832264e3327d58d930df75de68c7bd138d4419. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:11:46Z), 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/QZNJW2523394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57299d5e89b2171140fcb41d8b879121fd1f3f65c22013e3598d0cc955a18dad. 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/GXBAV2284852.