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 0x7e4d660168e38c4811a7853865300d9aeef0ed229b810c116f252540557ea71c. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b41b2a16-6a65-43fe-9f6a-37b1f066c163.json and https://artists.proofprofile.net/proofs/artist/b41b2a16-6a65-43fe-9f6a-37b1f066c163.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 0x151ebc992f65346e06ab4fa0b15f169746ff779f6a1eaefbcb9cfcf1ccf67ecb. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/ATRB12100141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20fc9362e3a95b49abaffac6a3de84abd827f2c8a352b74023443fa21ae68f71. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ATRB12100142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bd33c92cac6a031cd7629331b133a045e50ac9ec69b2811be1751c97af7c74. 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/ATEW52401904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bd33c92cac6a031cd7629331b133a045e50ac9ec69b2811be1751c97af7c74. 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/ATEW52401904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b60ec2230517a96ea73fa87b790f8f97e5a65e1841848a605c0951cd7389d3. 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/ATEW52401901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b9fed3ff6dc5dff46e9afce3dd0929ee699dd0ab5a46c0f454162bac1f78f0. 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/ATEW52401902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770112a05b914167cfc41f0bdc07d844bdbbf515a481c335c7d6337942097585. 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/ATEW52401903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414b0dcd55434001e4e547c0dcdbb354e73dda06100360ba42d9a01093fc32d5. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/ATEW52401905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1041c55d09480cf84d7797bb65653f8e7ef1eccf2d5d554ff4a96e2c0d803c6a. 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/ATEW52401906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6b1bd8fa464a5d7511733a77ebb7ce06468c5fb545658578aa81b359e906f3. 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/ATEW52401907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865f5ecbb504cf17a200f088ade24d433bd7cff50b0f974e4fc3ae6c0207d7e6. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:56:50Z), 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/ATEW52401908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc959c7dd60eacbdfa7394c04975bc41a284cc27c7d1594842e10f96ffba2bec1. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ATEW52401909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9cd5a8b4621f26287aceede73c319cb5d09fbb7e503b021bf58bca8437612c6. 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/ATEW52401910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbbd2038de6147f1d9530d5010f208a7e0067fb9ec662e7fccbf54305db2ff8. 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/ATEW52401912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3165ee7f82430401639213e111c8172bfb85aefb3c55b9b23e5b1e186bf8f7. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:37:03Z), 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/ATEW52401914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484f99c410c7d21a584774a1b7dba85fec81fde3dfef1f3ceb77a7cd22423cca. 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/ATEW52401915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30fc1e116a726f189e0fd4c73f2ffa7d1478cffc3800cdc0ff3cfb25cfd30a5. 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/ATEW52401916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f471ded390936d73d9235774f4c3b0683469d78049c2857cd15e1074044681. 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/ATEW52401917.