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 0x176b769e8a7372da8015c8b097f9495c5d7de4c93f86e590e744cbd618a0033e. 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/3293c6c7-0af2-4922-be7e-979f50b9454e.json and https://artists.proofprofile.net/proofs/artist/3293c6c7-0af2-4922-be7e-979f50b9454e.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 0xc2a772aaae60b099981653abc06c6b4004ad50a146b16a1e8ea0d11112c89011. 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/GBLFP2381450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00e6878d33394004eb7e23ca094c8ba4d1dd136fa283e5d711c263d9eedf6f0. 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/QMEZE2197548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d683b4a57956ad46cabb280a2b6167d02055d7b5c3d5ad8c19b4d3cbecf7ab7. 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/GBLFP2381456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880fd65b86d8e81265c7c0894932b068eb2a31cd05fb0d4aad78c1311a4d26e0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GX3Q92550402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81deb557a37d5d31e48869dcaa77fcf003d5a5ee67e438c82d86288ff95311d. 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/GX3Q92548883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ea7c41c81b406f657ba50d34a5792abec8d31ffbf97e8cd3b6aec09d23bcdd. 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/GX3Q92547822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1aa0d53205195e29f2d7ecb918a97ee3996a0434bb4a9ccb0488689f819daf. 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/UKXN22587217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63162fcd9dfa53432bccf7f7df4ec3af11be4848886b429a94d545027ad0de7d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKXN22535767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca55977b20152a4c39b3bb28c0d5e7bc43bf01322a201455e0bbac5eda1b57c. 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/GXF9Q2586015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf163e575eebdeefb42ffd0e711dc6e17955c65f7ad1b8f8a0c46fc1c1a356fd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GXF9Q2468569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74d520c623541dcaf6bbc22021aed285366abd59b91e2a9a22665576515028e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GXF9Q2468583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad3d00a58ac493b099e5da36e4bff50d89c23b90ccc2af1bd06b883f8071121. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GX53U2476294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eda859ed2d9c0771a75695728488dc9de484cc605ab7032b61ab2753fb3d7dd. 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/GX53U2399913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb131a337cf92944167b0ded22da675e8e7292cc3804c3e37997880b1ba1eb0e6. 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/GBMA22412519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343625f83bb043cc18b930f5408011275d7392a9a852b27a67cdaec14597e8a8. 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/GBMA22412517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6e420b245ab0461b33d11f2b8672286a49e5bb5f55251b11b601235a1c781a. 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/GBMA22404407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f8a13595a06e734d27519242d0cc10980b99bf647ba77ded3ba4e8ff7f01d8. 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/GBLFP2475064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f032da84c2c1b62114449e7ddaa8ae3875e9a238bea5fbd889fc7c5f0969d92. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UKXN22365304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629321385a2282e87c576a764e94d3f843d9dba82eda0b3f966b926a00d53679. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKXN22365305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb186a577b49fbb65a86f419e1d4afe04bf9408bf63a9eea1822207e7407ced. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKXN22313432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d69e4528f217942c85a9769460b92650c16f746c4a9e6e204fe921357babba. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBLFP2398504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00e6878d33394004eb7e23ca094c8ba4d1dd136fa283e5d711c263d9eedf6f0. 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/QMEZE2197548.