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 0x0b38ea922c3c2bf03f3e844153a5344e7d0a62c0e8fab43ae40fe9516b604e00. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e42c67d-a593-4492-8329-207e2bf33e2c.json and https://artists.proofprofile.net/proofs/artist/2e42c67d-a593-4492-8329-207e2bf33e2c.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 0x9aefa9f525aba6c8662b5172e4ff37f2c6a9a41924e8c16f939ae695b282258c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWFJ2444768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b0b1025e09adb95ab8c85343ee1dbd3a7b8fe6187ea2092cb042b6d42b079c. 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/QZK6G2416243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad63aebc62042234c63986a09bb4d4b6819ff4344a21a9cb5ce0308b007020d2. 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/QZTB42335488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdb3e61bbf31a65ece7d818688b4d1bfd7be6d60417fdb7f5baf5d780636d2c. 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/QZTB42334106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ac27e881cab605283835447dc7c941b479556ed12a6a2864daac3c020e27b0. 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/QZTAY2344620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5f2c591efed8e7017b21cef2fc45d4712fc6de895747627fd174c42d626404. 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/QZTAY2344621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26b4879f1dfcc7d464e43cbb99525c6f84af01df719c6e21ba55ff1f4f702db. 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/QZTAY2344622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4717fb03337e819046ccec65e27ebc185a70dee14a8c4986f59b4cabf8e47b89. 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/QZTAY2322196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d78507ad569189c8f921ed0b48504eacb82ca3e4384adf31c9dae4cb1293e2. 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/QZTAY2344623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048df69fe69847ea6019e3b9d3276404c1ebfa2ee4b04132a2908f833493bd5c. 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/QZTAY2344624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4717fb03337e819046ccec65e27ebc185a70dee14a8c4986f59b4cabf8e47b89. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTAY2322196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d71edb49ca5a0569911c88e22443a1926e0b3de745cdaa9c13c5ceb1376b89b. 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/USUG12406739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24115209a389cc5786cf87f967b66dfc61a9d18348c49ded969d41033396aeeb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12405945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134d14ca7118c5f13365154ca6a880f3d5c02bd1a989d8143ccb96fd1b1c54de. 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/USUG12404979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b833a13a2f2e26245c06349ac26f07f955a0c8d39fde476756d7c326699a496. 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/USUG12406740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdcf9cf09a95231760d4835901726c9561ab0247d8f90745d51851a94924125. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12406741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae84249e13861ccd7829d2a2f4c0e7115d6e60241a740e0da663abbaf8613f01. 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/USUG12403956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cc741f3f529eef7acacbc580dbce5ed76dadeb1f4724d1acd4771c89ee3eea. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12406743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15806a8e2d481a91817b7d7bf455538f3e674ba77aed27f571ca6ff5345d70a1. 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/USUG12406744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e4c2cac20aa5172eb1d6b59c6b6e76b3b449ce51c3dc5a98b8e43e19ceec31. 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/USUG12406745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc13ca49955ecd368856ae3f89d803ea18b69418cc9eff1cef0b50b8d9823d78. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12405457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d99aa62b31f024ea4301596e8892bec938e5cc94fd3061f3a9e522802e210c5. 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/USUG12403033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee098c3f934eb5b19a56d37ba0ab45659cd7b9bc482f30d680fd6145c4df4ba. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUG12402422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035ce98734c747c158a9b0d135d3dde3d799ccc2f8337016469f41326cce28c7. 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/USUG12406746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7309d4fd3f993c80b3fac361ae7ca8cf4c24eeeaa44240c76f842ddef7500e81. 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/QZTB92473239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff863798a7cd83758e511ef41e24a671b127dffbe589c61cd8c8dd528c58767. 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/QZTBA2405746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef673ac72fad8858a4cdfbd6238eb4b5ef561ab8fbe7cc1b2bcb5d7debae9758. 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/QZTBA2405747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e5cf2329f9573ce359ddf10944797f0a0eae04ff10f6fc94a67a5b55838fc7. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZTBA2405748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c628717aa5f659f20236d20b8a057d124ec20eb56e8c014df1fb22afcae357. 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/QZES92432977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb451dd15d8277faaae8837ffa9935e32727b55894ec26e11b24ebb9c4516d968. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES92432978.