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 0x2196034de8b720780866b459bae8c9bc5b67579c4fade2d37dbb31d14a5ece11. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/64767cf1-7e45-4150-a607-45837cb2b17f.json and https://artists.proofprofile.net/proofs/artist/64767cf1-7e45-4150-a607-45837cb2b17f.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 0xc245965d08a616ad3c58841321819be58697cd1a19c6c3520d9aa66fb95b3a0e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAEI1955843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78668fe44108e5966dd517d9e8a059f3d828aa76401b62ec41b4594cfa48617. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAGH2266976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986e363a8549d5939eb90597e78a0f95f77a00b7236c77e47ca9d206488d4c37. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TCAFO2126958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32af10d8e820fde186d77bfadf9faed0c144efd4939b974e007583952ce5ce7f. 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/TCAEA1989179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45df9f6b8277d5751e746d549e3578daf3f5025af005d1c5ce2cf2878b8bb915. 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/TCADG1756411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24995e5e58fe88c0e41efc9ef32ca1ff224e5919275b2b24c3e698f3280b849f. 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/TCACX1781153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0d2f61fbe26b847bc9c61819b4dc7c57d6c19a9f9548ea4906a6722948bcb1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACU1608257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947583a8a9226f9e54ed48db5ea15f0077daa13ee29b27dc179f6a545c92d88f. 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/TCACR1671940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2ee9be8ad35dafc19b7219a752a36bb2e7eadb1ef8e814fffe63a943bf7291. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCACJ1505687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13b58f26ae506dc3a642401a7dd466bee5b051293a27e04df9769146712b73a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBKPL1560721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e0a993af5dab05ca9e94194de0d0d20b1419c8e6867cb54522a7f3178f2007. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACG1502351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b2ca9c396e030513f195f8fcb2e24a51c872c3ad7d5add25e120d1025be5f3. 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/TCACG1502189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ce58b707fafe55a1c11929415ba7221bda63c1172e142210ec2902b261f200. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCACE1550711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52bab0c8af055c94681f4a90a7307eb148680008fb4a5e87aadfd60f2e64f6b8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACE1550710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555f09b8a1a55c7d42ad1e6aa97ddaee7abc2e14bf1d5d2722489a4f896e1551. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCABZ1499104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88de784fd503d957a21e681b5435ede7789713c510687a992af42de464a731ae. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCABZ1450257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b98b6ed7bdb86bc99a332c292fb927094d0f388c10e0f1191c4c41114b520aa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCABZ1417426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f00826faf57573705e85b68cb590e06b9a03fad5b99e0773a3bf9499242a52. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMPKX1437202.