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 0xad899b0140ab19926cfea9957a6572c740332862667c85367dfad6cadda54213. 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/99e42f3f-7563-45d4-aba9-481d733ec610.json and https://artists.proofprofile.net/proofs/artist/99e42f3f-7563-45d4-aba9-481d733ec610.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 0x48e8ce3400d6f1c1e2317034e13b47b5785883345f8921ff71c4cf8bf3d21ab0. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/SE6TI2188702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e30909a7a702b59cbc283a4d462c4c7be85956899b6062056d05d91349701e. 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/SE6TI2186660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a01c5013b4e3541892022f4a99cd9e4c78e0bfbbef8a94a206db3658c050be. 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/SE6XW2102497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0527f019d6214c8a21fbb7829b60970fabd6dddf0633a011a0fb1eb18ab32d5d. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T02:49:03Z), 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/GBRKQ2136572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bec6b331693192a4b2af169cb2a141d21291d499482eb0fc56b0e87d493d36. 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/SE6I32201093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b035285802ff7e59988a1b66952fac9bf88f07ca32d622d1d56a4d08f935402. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/SE6I32224209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d35e6de89698e2a0eca344a2f7b7d9f9a0857b6918f82165d4977c704c4b7af. 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/SE6HN2398138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8899e0453ab795ae526c8308aae99d1e452af2dcde8be4c608dda74550f97fe8. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/SE6I32308059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a894ee5e014cfcb6c05d40ac508ae9d73f8591ac8ce68f348b904d6e3ed3fd. 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/SE6QE2346091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b065e3ef071330de856d91493cdfde82f35a07285a63ce59ed39b1a21a9da7a. 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/SE6QE2351338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbbaad6ff48c748c9b3f7586bd4196f14846482f981e60b8b26cd19b8d6e4a0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SE6SA2355497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7379f51115394b89fd11fbc4fd89475ab8564676e8fd1f4966fbe3367690bb66. 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/SE62M2362535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa4d42496e4e9600a64b497227bb1105dc0ee46ebaaf4978ae2d2d0fba117b8. 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/SE5BU2435825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f7c96c0b4c25e9d7b6d0a4efb8aad00233b9659c88775c73f7d75f41f867aa. 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/SE5752401101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14b39805aa6731d06e01d11389c7d57b328bd17dc8b1e0853976b8715946e49. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE6QE2466674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1595241282685e9e473baf2add6549c545e893c846aca46f68ca7872d2aab0b6. 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/SE6XW2425391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac8349bcead5bd61478c7d3c5ac894c817aae478d93d2940526be8f398ef07e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6XW2426144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bad86404c68aa55958d86980de3ece7611afc521b52c1834c72138e9e47de89. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6XX2558038.