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 0x8809e54ebb0c7020f62ca41bd56680845834fa1721b3f3c1916359c9fec655d1. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e59e2d06-410f-4bea-9885-83a873df5417.json and https://artists.proofprofile.net/proofs/artist/e59e2d06-410f-4bea-9885-83a873df5417.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 0x6bfbb0598b7c74438a45f90db29ead7e8db5bffa1e53ae052d44edb4157d5dfa. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:39:04Z), 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/USDY42408865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea21040b2009104db9c6329b39c688dfd97e79f1dbb8c3bda67eee40f90449c. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/USDY42408866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86903c1b2ddb05a91fe16402bb032556645ac85668d725a55e0404a6afd223f3. 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/USDY42408867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0100ac2d90e78b835140fbd533cf1fdbf2b09b8beb5b69fe80ea39bb439f72f2. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:46:05Z), 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/USDY42408868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa233c23500867e1dfc05c51c70d2e1f80fd83e83c783686b0246458ec989fe28. 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/USDY42408869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956efc4499a10fea7b7e854284eb24a1c247a1a96d672a8836bf6f1052d17603. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:50:32Z), 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/USDY42408870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dea44f3bd4c8eab5f12b7910978b987e5298faa89225100e0f88f8549ccaec. 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/USDY42408871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c075cafdf844256fe7e727d475ab5f50cbcd9e04a5123b95a45c2d0be39a177. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:29:32Z), 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/USDY42408872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b0803403ce49c715d05d6b91d4904a54c275d86b4fb116f31430875f05caf7. 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/USDY42408873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bf27697571c80dabb186b9a612c5377ea1b94330f3ac105ef4670d370cee61. 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/USDY42408874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f37eac52561e7bfdeaee1c6d83efcc124fcc9c8616cafc76c24d319b587b53. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:06:17Z), 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/USDY42408875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626edb06a1fdb9c7b21d9484417c7d5584feb207c5b10cbe1372d2cd7c6dbfb3. 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/USDY42408876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7300857f0a5817bb8c207a1cf6e8ee4230c15fcdb4567215118af74f6ebf02. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USDY42408877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab1910b60c1f2d4d87c16bae19aef7fe20a611c458740ae16392184270fb284. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USDY42408878.