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 0x81bbc8f8c9af932e121ef4bf0d39f789e56e425f0bf2b1290c029065b9b72708. 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/2eb3f53d-1c90-4a5f-80bb-8e15f6ad40a0.json and https://artists.proofprofile.net/proofs/artist/2eb3f53d-1c90-4a5f-80bb-8e15f6ad40a0.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 0x1d09cc7fbb8efb4655b04419c41b9f1f44784dedcdc324715fcc646401f9c552. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USDY41539076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fad537cdc9fb4b175a77fbaeec4c7b05273dbec50327462fb60e6591844f2b4. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USDY41539080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546e5763005edc5993e760531c85961afa38b9f9165d50f7afaebc937db0736d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USDY41564092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9557992f1a9464ff47eed4f114ccd9fa83d0a8368ecf5ea892abf82deb5afe6b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USDY41564093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2f8c82a245a1b7a331c02f880f5f76d68c9b099a526e89a593ddeadab74015. 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/USDY41564096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5987beee6bb6329051b8bc3ae7d06acf904a80af54e9bde695bf17142dcadf87. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USDY41564097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4110a6d8bbea1d198716f94ac44a82807e39ac60d640a0439029434a17a7d253. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USHM91331895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf413c561acee903402bf7442efd19ff4592cda30e6757247963ee46887cbf837. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:09:57Z), 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/USHM91331896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df52da7d6d2ef7e4af3f7d9bf4d8ee2287c69e2aebe7cb6d47d2843419ade2b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:21:57Z), 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/USHM91331901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb54f2594ef68e066694542efd3ff9d0d23aa9130bd45693f08885fab364cbc8. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:22:53Z), 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/USCGJ1652635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b223ead0500a66c197932f0db0635302be7fce11f5325f959dd28d905ed9ba. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USCGJ1652638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc586152a107c40dbaf1a9046dc5204da67a40087d2abc39e3968c4680bd346f. 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/USCGJ1652642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21acee5371e82d7af23508b1e47954ffefb49e38028deae6158ed44f8d5afbf3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USCGJ1652643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f497414fc50ee50132cbaee444770302885cc3258e125f68bf2545009189423. 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/QMAAK1952830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0922be57d68b80583e9736202c3d115f2374608d72cd1d7aa138bf04f8ae58. 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/QMAAK1952831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8871c9e22eff402d6d0da12457f088d4a631a9ae163a2834d57874036af082e. 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/QMAAK1952832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc86d0c9f25ffee6d95e749b387e9be4e59ceac7456715fff02a26b81174c915. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USDY42445258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b76af04e8a707ef6671a618a8eae57c91f912fed40f2762f8f5d7f9c7ad1ff. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USDY42436687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87db7317d31fd5e7b42090d02e200f39b93bb6e95030b827981a411a5d6e8526. 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/USHM91868718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24fe8cb6a8b1dd7ac508a88d1f94c6837300fae62031d5efdecbdd79d73c58a. 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/USHM91868725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5acc15dd966e23a7af79f9230619b4e37b3dd43087ac8141b44f19fbbd895025. 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/USHM91868727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf292e999d2ff4af85169a66ab6a23b15d485a15d2e440139f993b614d0fa7863. 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/USHM91868732.