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 0xb6d278cb096ea98252d2e871e7a8d689b7e9b3a8f59adf05eca0658b038895b8. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e4533070-da11-4fec-b298-0e9ec653ae3f.json and https://artists.proofprofile.net/proofs/artist/e4533070-da11-4fec-b298-0e9ec653ae3f.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 0x653a2419c8a9e899276d8a5d566dea7d2eb18f24d21a8eed9c3727969c7e556d. 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/FR0HJ1800040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923ae34158e301dd09025c34d7327f6a8c58df423941c2bea3af172edefca50e. 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/FR0HJ1800050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6521aca987388e5c175ef6ed67e5a862b12ed56ccdc7be84b4995289907193. 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/FR0HJ1800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa438fde3008a3382930da98d63b0574b4fd0856d625b376c7eb61f0edcd285. 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/FR0HJ1800090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef0219a26d745c32c5b8d3d3bf4b11d7df4a7dbdca0c3b30aa9c4c70cc09ee7. 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/FROHJ1000050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3806184a9ffc3d3efe429a0badb26fb4d585f7f0b3ea183864b6d20fd556a440. 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/FROHJ1000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4508587ec3037903298da202b7716d621726fcc3c31b79f6cb280d2c119da341. 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/FROHJ1000190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac07ea13df065786861c90b138de675647b04a2307a8cd479d31d3b4f44d384. 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/FROHJ1000200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d18839f103b71f1548ee0b6e914cce197e102ef2d98b76633131f927bb5995c. 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/FROHJ1000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e25930df2fe6839d7ef37281f8dac6b23c4452b31b9cdab8583df2f9df57a6. 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/FROHJ1000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf370b21dfa1b011ad126e21da4bfb48721d4df27330ad8184b93820be0f21dc2. 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/FROHJ1000250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0cca9a0070566c3011c6793d2164afcdf9884a985ac1b912be9299b3ae0d518. 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/FROHJ1000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4c846ceff6a92c4b48ddf986d8c83c80039bcf53fcc9cf1d340227c55c32f1. 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/FROHJ1000160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29ac607942a187b5dfdd0ebf09c215afbd75cb40a9139f9c804784c9936c4c5. 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/FROHJ1000480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcf22718c1c0f933066deb6eb6400b7941775bcfa4538febf3b5eaaef4d640c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FROHJ1000490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b798ce5f6622bc4be21e0ce8d4f79bf360f5f278ed4f324d80967f13839be6f. 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/FROHJ1000500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ae9d3ed4be4177d6df44b57b69e1349e4d37e70213bf6934f078b7560a6181. 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/FROHJ1000510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e68679c28c97c8aeea07aae86d461def067960b6751ab46883de30738d5b89. 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/FROHJ1000530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0f76f553273583e0cdaf81e7e7de0271080b3937fffbd3c29b33e93084cf92. Chain 2 (Bitcoin): anchored in block 957253 (2026-07-09T03:08:40Z), 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/FROHJ1000600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539451dc0f1566833ef07f030c24292f6e8523368f04ab81b95b643df4f36c87. 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/FROHJ1000620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b798ce5f6622bc4be21e0ce8d4f79bf360f5f278ed4f324d80967f13839be6f. 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/FROHJ1000500.