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 0xa643724b7ea3fed979925611adc9b874e9b5f96b1ca8672c3df445ccf47f4f01. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca263deb-de7c-40ba-9919-fe9fc6880147.json and https://artists.proofprofile.net/proofs/artist/ca263deb-de7c-40ba-9919-fe9fc6880147.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 0x773097919a48afbecb28248115d73e3c67c9dad3de3a54ef62b5ad2acc46db56. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DGA072138479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70bba995cd1e01ba4f2289e48a68ff316386f9c8497336c0356172551de2f463. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR59R2131093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f1dfc5bffac1d01e1ba4066f3328fb83f75dfa076cfba93883bc30d485fa0c. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/FR59R2131105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f8ea24ad941bd7ffd8444d627315064abfaaf834ffbc8aff166d0b590638d0. 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/FR96X2144487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510ec42b0534ed7065d4afe9863e67431e7f5c5e0e2d72ae760857d9609f06ce. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX282170640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5033513072e98fd6103e09ea327cc42700c1cb763e861ef6c2e209d31b2da190. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX282170616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcd2f9bd7499674472e28a13029e746309e870cfb2210be1dcbc4473be568ab. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/FRX762195924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2345ffae8ecaef83189cf44fe0757e940e327fc3e8fafe72e30bb5faf4629213. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:10:58Z), 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/FRX872187213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01d9fed4a0061caf45410b64121d85144af82e86b7abafafcf7fc3e31c7c63c. 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/MYNS12143225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed4a09e231b3f600b0d289709e9ffc9a649a0d0e42cea3dc13d872b6fd2b8fc. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T15:11:29Z), 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/FR10S2238184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74907e38ad7f79f98ec192d48ab4874d005a80e9fbe91bd2c6fe8053fc23b44d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:30:38Z), 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/FR2X42286727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a8c5c2ae6848b5859a8940dc0f92be51a35df54cbf1ea87edb388fef4812ab. 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/FR2X42286733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43b346e3511137681dd5b4325ca7918ce62abd2dc85e6590838ebdfe4131eed. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR2X42286747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcddb8ae04295ef5cf43b7c6d565b23aa151d8aad181177f7a7372c3704946ecb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR59R2215840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571f3bb1efe00d503f08f4cad46cbb8b713b976acb98f9e7c1f916c0fa22bbe2. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FRX202205461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbf062ce30ae85e52693d6ce3da53e274d58bf0c66a8341d07f1108d2bfb8a9. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/FRX202256705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba77d6822f5ce3e57c874c8a0c7f916c780de136be373a32a0ae3fa51c0dcd1c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FRX282261640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0be5218b5cf2170c5427df7252723bcce27f27d2a67d44ac9f551d75f131da. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/FRX452217069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc119dc70b6b68e0e2f875e74e403c40eb9efd664f88acf90920e1ade6662c29. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/FR10S2327833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9baa7c38183ea4419c15908455f23b2482f98184e96a5285f1c2c4fe5fec8540. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA062387777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5353f546adc4d6128ce83ae845b0ad1c552ef859f2f6057be61ba0d1a52ec122. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/IDA742300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb867580567130ae511057cb470918c9269b09706b2697ee7069733eee3bf267. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:17:15Z), 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/DGA0Q2351785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55aa2dcdc9430f78e65436c13983dd8461140e6bcf99f5b0740fff3c38d77615. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/FRX202453207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79439c58d61470b4a0e359c1c7bc2b0ea66c9d81dafd0477c174bf1fe9d8657. 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/DGA0S2452747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7e098ffcf9d205b4be2a86a16c89bf33d9b4f8716c4e6818655910afc9e0f5. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/DGA0T2412329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955409ff146c96a86f7f73da33beadc04b45102c2ea88b6bc2cebf36a66eb39c. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/FR2X42523924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a801f39c51caf36d1aebafcc3f6c462fa1aa06a616fae3fdf7a1bdce040db04. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRX762505126.