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 0x2b41bb31c9d01685fe575cc778abf07d5ae5f34722b854816695bf921e392399. 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/65eb56c1-9de7-45a4-ae6b-cfc3ee7d4af0.json and https://artists.proofprofile.net/proofs/artist/65eb56c1-9de7-45a4-ae6b-cfc3ee7d4af0.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 0xbbfa25ece49d0f02e490dddd7591db1408737cef566e7127eed50b64db7eb059. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:12:07Z), 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/FR96X2290521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0435db8286d59bcc44c4230cf818596aea45d10c647e5d255b9802298e54525. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZAKB2202183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0685c23c044c72fd68a72593bbdac994d7c872a494dd2e5916c6e7761c034b6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/CAQOI2300297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff4ba1a913ed498e7b88ed8a5fd4ae8b718104735f940f07156b4e43d7a18751. 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/CAQOI2406332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a709dcc04114f52d83a8c6218b6adb05e99b27770a051459a7934d181caaa28. 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/DGA0M2368841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159abc425dd4b9188ed67860ada10e3e3f2d49c2f14ab5b72ba1838026f75e95. 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/DGA0M2368838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b97ed0ae501648c033a0b9401b93084b718b33b22230bae64d7d5f7c1083f88. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USANG2421998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2f7e49607854a6aa900b271e41b80d930b947646a1065fe1d5c38d7dbe88dd. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USANG2421999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9d5d9e278095cdd7b70dce1790245baf2ebf16885c5f1aea91bf72c4718c17. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/USANG2422000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa3247110281000bcdfe3d6da5ec909c7f74cb8ea291554ba15f67fb24b47d8. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USANG2422001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeb79917fbfe869dec367ecc958a2d240bc957ecaa0f3612fc0b3760d66e875. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USANG2422003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4796201d63aed5ee5cc70f8d2687536e63526d91de0798bdbb05839128675a. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T10:29:46Z), 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/USANG2422005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f46208654d2e5092a13a0dc9b0d4e9c5323653515364c69f554a2d157edbbb1. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USANG2422006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc35a2ec5e7e91ea17835810cf17bcf797eaef02860fd6948742fe1ebdf862bf. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USANG2422007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610ebce2681787da6a39d7712922c84eaa1047488db39d7c11b4841ea2f6a264. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T19:03:53Z), 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/USANG2422009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980be90c06bf8016876704c44d2039ed53e24419a0e9a1c3d77b5ef8f6fb1084. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:10:04Z), 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/DGA062479071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e9ac1620d0df31728c1eeceb559f953164bbb8b56f16ac23f350a34f28b9b6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GXFHP2460672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab027220677f86ea93ac39eeabb3f97ccf768cfbabfb53d5397379fe9f64721. 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/CH7812423808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91eb2821563ecff0171c039f859efa37f2b1b895b548c37af97e29cf6d7062cb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GX8LD2526803.