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 0xe7c106996ffce8620df19dd83e115795de376c5543e7c4b8d6a8fe1e82d048ee. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e61f2941-7869-4948-8634-5bb68f13cfe7.json and https://artists.proofprofile.net/proofs/artist/e61f2941-7869-4948-8634-5bb68f13cfe7.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 0xf09f07eb7e96bd3d4b5ff0d86e8685792945d206d9f962e577db1d0b758633a3. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLSB1300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1befb20a68054c1ecd13db676a90eeed0dfcbb5f93df3960d3c2180c4e25f27a. 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/GBLSB1300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef038f4a1e5bec01fa901cbbbae530f105ca33bbc870b910eeea10fc0d046d2. 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/GBLSB1300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7591ca5469f87d4c3dee7fc383e69e3504ab924222e13ca7b2941ce131369e0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBLSB1300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba80751e271f3412301b01596a48fb397c653e3a4cb32585a8a2092a9ccbc89. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLSB1300049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58b6cada9fc71a15d03133229835c61af96eb0fee2d27ae46bf81a2f80fea4a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLSB1600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf4ac8f8d83e9e3f49cc84731637afc7f45cc9236382f9c1b274c2e12d50950. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLSB1500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d872898b7248dcf2f060d829a4268bf8aded8b4e17bfdca24e5b5c66e1dda9d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBLSB1500091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af0871b80f5a1d4ed80f58a6a435253a2a3a07afb2f55629ed1330522d2cf16. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBLSB1500050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650f77cfb95395d0b7aa61867394fe12cc43a3435c714a861fe66957a3ce2441. 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/GBLSB1500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b30f16929451ece6a9064b1884b032ac45cfe22e14cf84619a1d365fcc2004. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBLSB1400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1310f1021c9acf765eddd16165dfd6c82885b940b845bbea6375ff2f2130e94f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBQZQ1200761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1a77c750c5a021cc8bbe1c7eec693883e031a6835a5bb2444279c90257d7da. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/GB8KE1101947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecde5d0e6f8fc655dd855af58608f54bd59ca82b15f20b0af256ef59fa38674d. 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/GB8KE1101710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8dcae8e092b58ba76451926ad4ee8c39e678232bd10aaee1d6153c8406275f8. 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/GBLSB1500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abdaf217e1b836ad459cfe30454618614aed77d3510e7392a4f3240fbb03516. 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/GBLSB1500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf4ac8f8d83e9e3f49cc84731637afc7f45cc9236382f9c1b274c2e12d50950. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBLSB1500093.