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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0aa73c4dbe40ff8acfc9fa98aa3c3073ddad540a82bec48fc3f33eefb5627f. Chain 2 (Bitcoin): anchored in block 954593 (2026-06-20T19:46:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be1ec542-d994-4588-99b0-2360f549795d.json and https://artists.proofprofile.net/proofs/artist/be1ec542-d994-4588-99b0-2360f549795d.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e94960842970f6009b60a38f05b4e1fdf8c7b030ee2f6f975687101fdfe8f39. 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/ZAJB92300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5069eccf21b94f002631547d3ed4d396ff3c90e925d084c4f191b5a51f4c5394. 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/ZAJB92300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d42d60840f99df9121e5db39a49cbb2fc6c238ca263126699dec2cb87201f3. 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/ZAJB92300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f7633d9615de51cf41289dee1dede8c28f8387b42abd9b13d24c7b4a97b642. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ZAAA52100239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a68ad06a9f6a1d0e3d55c58a584ffcedb884d802e0273674d65512e9f1573ae. 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/ZAJB92300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681b20542e4abc3773d70511a6694927091fa4efc456482872c638e71f6bc64b. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ZAJB92300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf88a7cb944fb6bcbebd20762f5e56ab6e94572559cbf1f0ecc72b9b6f314a29. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ZANG11900138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e7dd312f7d155a4e102b661707cb1b81bf2632222d7bc1bcf16937cbd55973. 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/ZANG11900139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8706a0cd6c84a86d299f7c4600d94c9fcc63d2a7efc4bfc26868b52176b28b. 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/ZANG11900140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4937882621ecb4e2022afed3173261828a1f90b120098242830fd163b7edc92b. 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/ZANG11900141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbd7136a68151fafc26194b841cdd4274f0324eba99c95793e6c0420e5d98f0. 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/ZANG11900142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696774a6dcc3c94733f11398bf95545a6cbc667c6e7219e1baa50b71c182ea3a. 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/ZANG11900143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075d080251cdab604c55df19c52890c50ae3077c58062169cfdf6d14f164b68c. 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/ZANG11900144.
Pray Your Way Out (Young Molz Dubbed Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09d2f1dec82ceb6c2c4c42505a1e605f13df808581c546d96b9eca5763af0e0c. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/ZANG11900145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d5fb5858b43c13232bf99bc6a04b7d29a4e0f6cdc9426af27e89c8bb59d5b3. 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/ZANG11900146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9093d9712fd7544b6fe5a1b70290ffab9418aa5915db75a022907e02e22c7ed4. 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/ZANG11900147.
I'm Gonna Wait On You Lord (Dav's Groovy Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6592714a0be9c092ea253f67b321a4fbbc49a171a5bccf9c083767ee1b83f3b2. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ZANG11900148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0511394d9d20fed761e6db480c3b380f92df84a387742c717f250932f92f16. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ZANG11900149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519a8d9a1bfb0252dbd4a1572b3b05581a87a0c58a7c6428669a7366dcb41139. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/ZANG11900150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7439828a10c2426ebc2b49b6d01a7a3ffb5b2f459f02a90fd38f6992ccfcf8. 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/ZANG11900151.