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 0x3ccaf94808fa11d4844e33964ab2fc5d9492bb998d315b455cfd6ba1fd5dc9b9. 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/d0340e59-8bef-4994-b13e-654e0b7133db.json and https://artists.proofprofile.net/proofs/artist/d0340e59-8bef-4994-b13e-654e0b7133db.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 0xa704241d155cd6325be00be4a7b35ce7ea2100caa873f7dde356fec0d70e2653. 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/TCAEP2080245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506bab8b5c27fa5b3d49f817deb7f5c38885e88cccdf2ae7008553fb2ce778c7. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHN82229903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0c0dee3b28be4a501602e6c7719025883448c93e7c00db0c011613d6099882. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:03:04Z), 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/QZHN62255325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fd2b747fd637983c2808a5e98f3335a3d0423ed8ad350d8b8b8a729e3a974e. 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/QZFYX2200377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b77770c76844be5a826e80cdc70a76e3a8ef2514b8f51dfc75b9a37ff1d6ff. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN72273183.
Saved By The Bale: Back To School Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf81a758ad4924a8da544517265ff54787f85ce7ee1d124ae9b9e04e9a9b9da1. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:06:56Z), 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/QZNWS2251856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49551975c4ddd0d5d9f7075da546b36720140d006388ab21abec889df880c10e. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/QZTB62454251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7020c88fa825b7a6ac17e25e468467e644b5da7f58b87052865d62063e741ff4. 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/QZHN72589593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb242d06ff593327a7ca0d1b7f911ea416975d61efe9c6d57ee160a9e077957a0. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZHN72589594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd68b6bd8238a26339fff29d91f144f5ffdb7e6f89cc864b64249412b6a0fc6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN72589595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd86249f070120a7cad4fc59968d5b2f68f96ceb05345c9021158746446a945d5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHN72589596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247933f71046154b3a39aa9e5a3e8cc99bc0c9e0eb757b6ed4f5f07b6f786c39. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:10:29Z), 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/QZHN72589600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48e5b161bee43c859ff7a9689b0a5e67ed2ccd44d76b8bd6969c396b49265cd. 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/QZHN72589601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19673513c015c792a7ed4d2096d2b5f02f0f6de37e37f0d99bd2979136ec480c. 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/QZHN72589602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c03a2282b969c44d04ec5a6ea31f23c5fb298365ae7da8485781db731b6f4bb. 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/QZHN72589604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3ea23dcec11e6a7388055b7f628a72c90bd9aff9656217d422de73836e5ac6. 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/QZHN72589606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6793d571098934d3246555cca61ad8d974d2c49cb06fa4bb5513a3f20b6df103. 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/QZHN72589607.