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 0xb9e9d42874e078644f6e931e7cb6c5be7b8cffc3d8a23c6a11f69184383b9da1. 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/736287a0-f476-4b51-9db9-6a8a5ecf7cda.json and https://artists.proofprofile.net/proofs/artist/736287a0-f476-4b51-9db9-6a8a5ecf7cda.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 0x79e18c895f99ee045c441566df6ff6d98289246540bcc4fc0e5ccf49249b466e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USV351362815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd493e9534a0af94106771f4eb8593953654934351e3f65382dff1a297100ab68. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USV351362816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b223b61257a148be31b9c9a78b1e99b428d2918d28e78554346c72b21df6dc5. 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/USV351362817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743e619f859bf0311832bcb15c440a7f5001e6afb5a9b63b57691052759c1b32. 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/USV351362819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572c2dc2ac8186eaa088e1207bb7c57da561c6838ac17489dde8a4232227fab2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:10:11Z), 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/USV351362822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebacdbac438c5a74c68502d4631ebdd6dea32175c5fba0b6a9766780e591204. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/FR2X41940171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bcdf66853b9bc97f0a10bf0aaef414514b82e68d02751e3aebcd8cb5fd1755. 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/FR2X41940173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164be0aea255bcda21d589209c3183c7d970e9dd48942450b3fa97f491d30127. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:54:59Z), 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/FR2X41940174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32ffc76df99f1d72ec24547f6c55d850165a8f60c03112d8d473c117ace9aed. 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/FR2X41940170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bcdf66853b9bc97f0a10bf0aaef414514b82e68d02751e3aebcd8cb5fd1755. 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/FR2X41940173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164be0aea255bcda21d589209c3183c7d970e9dd48942450b3fa97f491d30127. 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/FR2X41940174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f3be8892db3501c1ff4ba127b1551ed813f38e7f74415919d2c4d08509157f. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FR10S1763435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81450fa164be8778f5a0b17ba691a28bd77469e48842ad1a47320124609375ac. 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/FR10S1763436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72be3d01e36f558656e7668f7d85d382094c18c1811c6cc8d494779c2adea6e4. 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/FR10S1763437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d904b0d899f3514ccda71b1e8744ff98898a5d501a475b2007214986ed18cc9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:44:40Z), 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/FR10S1763438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6e75c13d18cfdb39f716529b7dca812140c43c0a072c599aef28c5f5a2cf1c. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FR10S1763434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bab193ccb29f47492ec26fe53c374ba43cccf716544eaa7f36233fbb11ab2a. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/FR10S1763439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fa69c936128b2729303f6c9647d724976b8f5172fc292889fb446422ba2daf4. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/FR2X41940290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875cd07376db46d85ae80d236415f3e76e73852d1ef25ef8fbc7cfc37d1b89dd. 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/FRX872015403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba602704071f73e4f4e69527c527dcb5ed730e7e7bb9c9da7dcdffc4a30f2ad0. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DGA052065711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a74bbe7fcc1f420db7467bb1e4da8c688c2de4ac418c711bfa4ea2f9e9df26. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX282252518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5662bbe80ddfe24a495eabf8a9f663f048138aa0b4fe8b6be0346c0a61ff690. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX282252528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2241298121683c6809b3da545c5aef5aa1cc6e7f17b2a2535570be41bb91d43d. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/FRX282252132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f53daa715456f0af88ec5e0d0f6b066c58db6a4c24d1bbc682d95ec8d6bef73. 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/FR0Z50099715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fb3b094829307e5baa8fb20de32c85fc8f4f1e80c2df5571ac27b518e34e9d. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/FR0Z50099714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7400698f365cdc95e30ec6020ec327064c923dffcefb97344d494410f72685c. 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/FRX452314144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ee3798ff721cdb0d6fcd07700e26774bbcf1041b96d7bec4639e2a8fa37f0d. 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/QZNWV2351609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ce5a1a7397f09d393783e931e77145c72cf74c95bac21d4b2733cdb0ce0cb2. 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/QZXLZ2365776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513747e362438b72134c676deec36ddfe29b05299392f1faeec08834df3140dc. 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/QZFZ32484772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a41c479d58d0ce525bc07d1d6b1fedfcca648f600acb23fb4302ace3423845. 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/QZDA42428808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18be8d506645ea8ffa1eadc031262de5e56d3a41cddaafaee0d7186449ad8b8. 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/ESA012446797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x320287a3ac3dbf22110f77267373ecbcb35a459c0981b220f4077b78782c10c2. 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/ESA012540410.