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 0xc1b74c897ab1f16c4d814b79b25ba172b70d9f52bf599704d7bb21fcf079cf21. 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/15df7530-3b76-4151-890e-95da485cd785.json and https://artists.proofprofile.net/proofs/artist/15df7530-3b76-4151-890e-95da485cd785.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 0x0aaf50d544606ac6a4f9c90ca97838542b8e573f10d808463a65c7997ac63081. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:30:20Z), 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/BRJUP2301001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b9c8a465089af96cc7759568d9841dde2c9cf40c19f7c5a0f58ec84c3c4dbb. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/BRJUP2301003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860608fe31145e7ec3249c0e90ffabdca4e21a6b5cc405449c0b9ce3d168dfcf. 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/BRJUP2301004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dceca575520fbbb141293e5663d34beea7bb6a20eea0177b53972dc69508142. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/BRJUP2301005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6353137a497bc0dd79ecaa82fa3d17e12e2832775394d49b03e1536dd9b1525. 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/BRJUP2301006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d9866b035144131e6a7e6ce173e51df38d90142479eb0faaba6cd5d4bfe4c6. 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/BRJUP2301007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe60048a697332fba5150bf0ab500b6e356bbfb8b245408821d231c10ca8fd34e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/BRJUP2301008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d821cc3b38d28a8c2849ce170ce437768d976b2e8b94a1e20b0677957bd049. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/BRJUP2301009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d81eed90bbc47fb415d869ae660a2ac483438986262eefc88eaac3387008717. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BRJUP2301013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f8fa15c3ee945bd57627ca7134d161aa0e3e655f671ef5660f2cbdd94f5a41. 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/BRJUP2301014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd567e4687a5ab6096693a4f485feded51284ff7bbada77904fb1e63f9ffe4a05. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BRJUP2301015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311d49f5d387eafd8b75f51bdec5741db4fa45b863d3ef2aef3794b9276b553c. 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/BRJUP2301016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ff37f36a419dc8ef7e6d8df6de9e7b389f2e96483e5d2fc5c1934a7816cef4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:44:33Z), 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/BRJUP2301017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe08632c7d5c4a71cf93a6aacbf080a0c3a0ad4d54d2bc40254473d74a4efe3. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BRJUP2301018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f32469549fd14727903e71d6f1c7bfce150e61a6edb4f6908e9f3ee3c69000a. 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/BRJUP2301019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77bbe92ce9fc6573b4b2f1b64655281ecdb93b7756b76fd3e5776e0cdd65e5b. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:28:12Z), 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/BRJUP2301025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e29e77c3fafca866e3bef24839001fb06d78b091a7a5ff50535a8bc566de5a0. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:19:33Z), 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/BRJUP2301026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa478e731f68e5308194a87d022e8155acf9d1c73925faf4704d0e48d19a14d0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRJUP2301028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f62773e89586dcb9edfec2ee4941b9ecd732dcd4ccd0cbc0b72b305861ad80a. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/BRJUP2301029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024df96b7c7138cc9cc1c8f8c02e4febbe0f397c2c29383994777c09d8c8cd81. 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/BRJUP2301030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925d546f808c464b0a13fd4e135dffa03ae280747f5f6f77b023dd2a20d9b9bb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRJUP2301032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89aed1050406d1bc7be0d91b69567a889d27011e2ce8477fb5980d59978c3fe5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/BRJUP2301033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f003d02ab5947cf4c86ddadc8d6310eebbe8dd834c1d52d7b0b95727931cb5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BRJUP2401103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafd199eb529f132069bbb066210bf4141ccd0e4428c3233f7653629cee42b8d. 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/BRJUP2401104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2379ab514a332d2360d3d0d8648d49ec4eff06af3b0c451e857bdf5105e83631. 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/BRJUP2401107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243ea534cf9a7b5dadcb0f19f884ab1cca12fbe1ec894c0c4459a589c8465a94. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRJUP2401114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee24b952b9edb6d360bacbd353805fb0bd07ab0999e8a46f79611d01fd15c1ce. 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/BRJUP2401117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b53571332fbbec8626ca91fdc9854f2df8e8c4793966e4172662e30eb58e5e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BRJUP2501004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab236da1c76fadaf63bdd7fc2f56083bf5b23e5fbaef633a60ec5f8bee26eeb1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRJUP2501056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264a36afb8516cf0f1307277358e01a5d7893b722d09962c1f76f1ddef1a3f37. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:26:10Z), 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/BRJUP2501060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e2ebc39914408e57a1db2457c90dbac6e2549f7d7bcc2bfd9d4ca1c55bbf3e. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/BRJUP2501052.