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 0xea5a42bf116783b6885462649a49e8a8ec002db3c933b302e88cd483de1a0f39. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80367c4b-c4aa-4d57-822a-c5bd8e5c29df.json and https://artists.proofprofile.net/proofs/artist/80367c4b-c4aa-4d57-822a-c5bd8e5c29df.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 0xcc0caf4a513c7950ce2377e2a915e499bc701c6a4919b68adc934726f57e2309. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:37:54Z), 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/DEUM72300691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5426e8560780676596f55952bba8a0d2830ebd1a76eda8ab94e20f60f46c20f3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEZK82112471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dcddde38e8cac7feeb55e6486185d8448e28c8a29eef3484f2a4260d25396c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:27:28Z), 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/DEZK82112488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21a50c226c0932fe9d8d3d817a03b579a6bbb6975d3eaceda81fc3c48afac4d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEZK82112481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f053e30b9a8999a198969f1f13cc9ed41252862c7e136b8f77436dafc7a42b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEZK82112484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773be52f559b35557bfba25be8d2baad48219c42d7f2d703fb75aa4329eee331. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEZK82112486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x683758c1b68a13a6c2b57d958d5e9b3bf6101986e01852f127dc198030b24f2e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEZK82112476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2aef6c88d1f9ef37bee82d3a5f644b6b18bf821df69d83857bff816724f676f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DEZK82112473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9009d12138355c62d72876275dfeac4ccd478791950dc3a5f16eba2e48ac2f01. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:56:28Z), 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/DEZK82112479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab6bef3e2d648c30f9a132e2e90ca8236d95334b858ca9c3dff323245d81eb4. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/DEZK82112480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222e951f407e7ad27a00ddb12cdfc65d47743490616b861926861cf19bb31ace. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEZK82112483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8180aa6c08d87002eeced33291263b6911f7d581d0e314cd0a89fdb8d324d8b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEUM72300693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894717b6a04b1c1772afe1c9042a73cf84b6fffab5756c6d0fdc13bf2af89569. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:06:37Z), 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/DEZK82112477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8ae3b432975dd494adf1df90fb6f85780c3d87902004429395632a7edcdacd. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEZK82112485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d20b6a5b71b8ce32bf249552a4ff7bd740cf06be355d3b32a003bb5e0d8a7a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEZK82112472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107efc08b5e8fcb4514820a438250fcac7b6f543fbee80ca836a0fc787388a9d. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:42:04Z), 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/DEZK82112474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca4afb17232e93ff0eb7ac78565f1d89a1ec1354bbde60cc6819b4c250d184a. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEZK82112475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68320e8bd05e5c8216b993493a008e3f2af326a25f2f4435616e499fcbb88c02. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEZK82112478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc4e608f28c3f20a2f4a7e36efe1c6ec1ed6290df603b0d429b7981903ad566. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:11:36Z), 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/DEZK82112489.