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 0xa12c50182f7865924d5663975a42254097709269c20b05ffdf68d17f08eeba05. 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/e0621b43-e821-41f5-b5a7-058eab2defc4.json and https://artists.proofprofile.net/proofs/artist/e0621b43-e821-41f5-b5a7-058eab2defc4.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 0x20139ca0a3766a11332674b4090517c53519db3f4ad8548abf5f0a4f3f10249f. 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/FRX202127172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d4286f774543089cfefad929b5c89dca9ed45bfa9c510f08bdcf51d3dbac68. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FRX202127174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc810dfeb29ecbef0fdab6b58f919160fbd4319ea0a1208dccb3c5503c00d34bb. 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/FRX202127177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07890d85544592c2268a387e23bb19d58c266415fc933434c0d6e2f1b87edbcc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FRX202127178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db1e961ebda01bfe1ffddb675d3156885a8705763c6cd9e92811bb822b5c7cb. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:29:44Z), 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/FRX202127182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3f5ff2e5f8f8f23ef1c48ed3efdde84a4ea69355af779ffd1f54c9565dff98. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FRX872306317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b6175401c52948eb5212a51feb79961e0647587f20624d54cadd4a34addd82. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FRX201955397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff95092c0f2ce0406fe139c5743d4c49b3579de6d8000a09093f5edc8d490b4. 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/FRX201955399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c73db463ecbbc64672b1c97a8a91bb55ca23f1e92bba256c637ed960ebd2c7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/FRX201955400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01a9073b1204e111402bc5778f4777cdc25e8bd6e30582eecc60c9d83df8875. 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/FRX201955401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c70d600fbea2004e57f3bdcfed635d195168102f9180b69753c566a45b29784. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/FRX201955405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c6879fb4b4570ef0a06074a6cf6d5d91e64f6b8b08d61405a5447ed6ea2582. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:38:59Z), 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/FR59R2188226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b62e6d0657db273ff6f8e894d0578250bcad1ef799b09abeb519bc3f0fb5331. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:46:48Z), 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/FRX762154033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabcca6f44c2d10163af747a61cb34edd156f2610f25d00ba46471059bfbca7c3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:15:10Z), 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/FRX202278648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd389e733324a22152d191ee4ce5a1644437940b22059e07b2c107075269f227. 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/DGA052257175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x231d3a74981d712bdb28df01a67adf9649684cefc6c0fc0fd1e270dfd0d34bd4. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/FRX452482243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee37793edf05d4a3506e02dc00d2f03a6ee2fb8599dac05ebe98dd23b1434c5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR59R2529914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331b28e9f347a3c65f307c6847bb1c7d4ba6a35b3697858f3072118f62abfd01. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR59R2529915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee72261db662bed9cf65987394692e2307ae97ea0eb803b20826960980d07103. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:44Z), 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/FR59R2529916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c277ad3caf7d8250566733cfaa464d40045fb7a6a2211a6c68b2c5867bcb931. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR59R2529917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689015ebce0535c8c46cdd3fa2284bb04e4074b478e8f5ec77ab155c6ba78e1c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR59R2529918.