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 0xc043623e5801a7d0dc3cd5c95e69e049f715293b4cd5b5a7b463c70121d2f5af. 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/e5424771-e9d6-4949-99f7-4c4ebcd93384.json and https://artists.proofprofile.net/proofs/artist/e5424771-e9d6-4949-99f7-4c4ebcd93384.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 0x97945142ca197494290c7386e651c34b0e6ec53dadea925023e933b0e94c07f7. 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/BCBL92200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8a51361ee640b681365a3e11c24d3ac029fb627c9f3ff3dbcc01a5be16e6ec. 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/BCBL92200202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf59186324e3b1975251c6cc99b103d70f8c7caeb283b57ef5b70efad39b0639. 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/BCBL92200207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1d3a2e263de1161fd74b12f6e1548913d219b9d807b8ee6711e4e39dc95c448. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BCBL92200205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ac0306a94f70fb52d209d4d5d2f50a6aad6578ff690aa5eb5c59cf5e6c31f9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BCBL92101201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41661bde368fbb794870bacb6f8b61c5693352f437e473422affc4d9b7a34ccc. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BCBL92200203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a2a8207bf0a95a7d420aa840d13224a1ca1576825a2007f6c6528457f53a1c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BCBL92200204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc245dfb0527ab1e40bd82c25140093f77882ee943a90dd003b434cffc93274fd. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/BCBL92200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72b24f4f2eaf55a4e58a9c1ac50637a8eb74f0c060349268f4f517c104d3652. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/BCBL92200208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95eead4b8e9a26795dbcdc3412a184c7b0b1a84ccd6724ae8e01ea9fd12ba4a6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BCBL92200209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fee79aab0e22f164a4dde8f82ee03ff8537c04563f69eab2bd52f452e43f09. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BCBL92200210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5622d32dea6e2d9de774e462eef7c6df0b4e0d4cca8179058b15bd52570dc33. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:53:04Z), 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/BR1WR1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5361e5d5bde9698de05b4b70e80cb5eaf4daadaec831350a5db04a14be444f5d. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BR1WR1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de08d471b99a999d28fd58b221fe185a7e096386db7116279919746be91b100. 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/BR1WR1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88c1855996ca921276dd95880fcf22765611eecafe0e74fcb701af6ea98eb7d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BR1WR1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0e331caa0a8345a3a4b5b5a5ca7da555108a46bbdaad8e5ea6d703a9525730. 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/BR1WR1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7434efc0a922d07acfc7b82a83c8ad5eb734c5e2c8282c1ede0ecefadb2d8cb5. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/BR1WR1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0d4e01713ea6c817ba2f9d941394db14884563cda092b515a10775061b2d90. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BR1WR1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6889d199fd4386d16404e4ba7a986c099d6aa122ffd52ac792ffd6478b1a6ead. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BCBL92300302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800eeffcf7501cfe45351ace05f730a99c3d5c96085c9bd0990b45f4bdf2940c. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/BCBL92300301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0138abe5b4f2500f72f137e7307d0077db83f81c8bd8c98fe813598fb5e5f84e. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/FR10S2301978.