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 0xc540d77ecd0f14e890888c43734e7fcedf56d0825c8a0eb93944448730865e9c. 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/f13942fd-c848-42de-a63d-91a06c8d05fa.json and https://artists.proofprofile.net/proofs/artist/f13942fd-c848-42de-a63d-91a06c8d05fa.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 0xfb41cf3cfeaf21c0b03c8ca56622d6cd8f1c2308431ba258b7bd15a903b28c00. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:59:39Z), 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/ESA082310834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e84c57577b6f9d89846ed3cfb025887e37ed5cf76439ba32607df77bda4ec28. 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/ESA082311617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f17de1c694a55f20b6d9b1a55fbd0f9dca27841782b41a4243ef5c36f6b6cc6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ESA082312249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1ea81481333326e66299851e23d4cbbcba68c9fd0c5d29af4bfac5dfe96200. 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/ESA082312551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a032f2e14acfcf210153ffd1aba69b22213bc71ecbc07668ef77f0f9353565. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/ESA082312962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada43af34bc54fddf9af9563690e6aa6a98f1849d2aefc426d5ad742ec6b369a. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/ESA082313448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8781a2f16b44102c900d8955f76c12d3780681581519b761a5fd2775927b801c. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:42:35Z), 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/ESA082314089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc074cb8dfa790b585e79d634ee8e41c5c9a66231620955bbb7f0d7923dd2293e. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/ESA082323873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e519f694d53324c0ad592b908d20be6a841f618bb9fabfefbc1cfafb003770d. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:28:54Z), 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/ESA082324070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c71edf067a1100ad828bd009a23f8025cbf8bb93bf9b195d49e281b93a18ed2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:05:37Z), 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/ESA082324401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34dd95214c63b222dae7d93700e9674ffb2602aa4b107881c3616229a6cea33. 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/ESA082400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5d3e32b753f2312f0222d1f2df5b78246eeeb7c0441b20c573de8bc3c5472a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ESA082400418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659ca74f8e7d9b05c6a680f9b47dbef1a46b05259b757e6afeb6ef451930a0a9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/ESA082400952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864250632e6d2ecdf5d961f63ba77039642024a860c754aba7a070a56ba759de. 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/ESA082401536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d0b6f2d3ec88dc5754bcc92d3d5a3665482569bfc4668a183f2a02704390d0. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:21:58Z), 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/ESA082401895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e4e95aa68580fef7a953c88f0dc97e7c58c36ac22fe31fb7fcef92d84f63bc. 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/ESA082402145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1cc56b6fccbb5ca2f758c9580b96d30bbc29e97a84c126feaec5cab949dd9c. 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/ESA082402611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf56b39decd970dd987fc7e315e8756f4088ffae9978f0bd035a846932973ad. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/ESA082500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c51416432ca8609d080ef8b5a3fa1c3473b7577d7380db7d5cf9ea26b9240b. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T19:52:33Z), 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/ESA082500344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fa65fe7f4cdf56acbef6c26a24201a5606084dba014fa526e2d16a63d37e25. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/ESA082501638.