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 0xafa539bc4ec021bde46ade9d7aef53ae820a0f2093a6473de1421711de3930b5. 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/5ecb69a2-8e68-400e-8e35-b6c2725e3fc1.json and https://artists.proofprofile.net/proofs/artist/5ecb69a2-8e68-400e-8e35-b6c2725e3fc1.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 0x6b50c3741d8cfab83cc83926222f5b76086b0cd6a86f376d3aa074acade6e8c3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGH2534573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe286be519a073a7af358ee1ba588b155b4dfcbad524cc32ef301a5fb9df631fc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGH2534574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda37237db92c27372a94e13def8f9aaf794e6da73a479af16f2ad0f9112ea071. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGH2534581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e87305a08c4fac1d2f66a72e374a37c1c665b52bd6106f0c9e5b03addabfe6. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USCGH2534582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abfb78821dfd9816c1ad25c13864dd060665a78f3829bdfb4f6f76b3e303d9c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USCGH2534586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d434adb3e5919a611019faea9d20aa3016a8cc293675dbcf4631901731590b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCGH2534587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41c990ca3e71757882e9a862a7e99946b6d73b90fdba03b6b4ff1f26bcfb6be. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGH2534588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80543854b2cb8aabb35ca44f258c26847141adb8dbd097338bd2bb0399322aa0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USCGH2534589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55a85b9bbbe4cc82d413c3184c824795d08242da842b608bc95fd4ee8237b59. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGH2534591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5be9fcbecedf30d455612dbc58b6694a6bbe55252d7080c0086f0b6363ff0b2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGH2535152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da394337c93724429520db83a1cb129cab83ef333780976f7a639d418c1d4e2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USCGH2535153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35523caa50ae7b5bdddc6efcea042aab5ebcf02491606a9d9c4bf273fa8a04e3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGH2535154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e0235b0b5114fe02006d0ac6bfe3ac53cd242e798d5100006e27f625344af0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USCGH2535156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43dbd583257179ea5d6073efc2a1695349263cb204a4b3f8a3132f96ef937fd. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USCGH2535158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c219ef0882c5baa898a54636742fe25e132421989b3c0f18f2b66b7a044922. 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/USCGH2535159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48bdd44a2d14c364a4d862c36ea555ea3a1e23ba443214efcf1b71a9e077fbd2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGH2535160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4df69914a4a24e27a56ccfd46ba6326bf6ecbd45fe5a051de0e5ebc84d11647. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/USCGH2535163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45819dc205636908df6b8212d549fc73c21a0fe21f2339f435d4b44d65317fe4. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:50:51Z), 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/USCGH2535166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9889d3622fa31cdc7cd2d52b9d2c52f2ddc6f71ee637a4db99448a7b9d8155ee. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USCGH2535168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fca6be6a0afc2cf95d4b14390df33640a23b314b863b96618abeeee5c68ee5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USCGH2535170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22a8b01be5750f2e713d29b9d74aaa1d2c025dace92c4eecc05e853609fd428. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USCGH2535171.