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 0x9060ae6f93e85fe48a5c2d804986dcffc9607b5649576c6f8bdb61169dfe35b5. 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/e78208d9-b20a-4b82-8ed0-3dbdf871eb1b.json and https://artists.proofprofile.net/proofs/artist/e78208d9-b20a-4b82-8ed0-3dbdf871eb1b.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 0xd046cfb9d8c64ae45de6dd64d6173183096eec4874a46a0ce43a1dc98f947e94. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:06:11Z), 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/QZMEM2195350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9311bf47925c599345079b08b9fcbc59bae7d41b88f777feda6c88711854d1ca. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNWR2168637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ce206345c4765351d3b7852cab7c5c2a923283d56cf018519da2ac27b4b2c6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNWR2162058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc476b4e574f94c2adc04074b074b590ce2bd16286297f3b294ac6b67a31f328e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZFYX2114332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe444db89c7cc637c5da9e5c8c3de93c58b30d08a89e8f589fb025479d6854cc2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6H2190795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c7bc5813010f184c25e3bc9a83191ff7eb4bf5b9bf739e532b9c51462c3225. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWR2168640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453cc979c4ca3bb967f2431e3a0e4c29b01ae47c65fb8ebc277cfbf9048df4e4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNWR2168641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d7a4d2294528f7890d24f3b84a228726bd6798cc84334aaed232b6efde94d6. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZNWR2168642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa9d2ba1e0f29b74ce8e081087f82cfc976b459cda0cb7bbf9e4a727cdc7fe5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA0M2415401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ecc4c9604f6c342736b9276c674f36a3f9fb5e571250ff36fb5f0f15097dda. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA062468705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad1d09648c7196a4b4ede986de2376acbf72e50b72be8c427c820bac9be4421. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRX762335916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3134a6935c9371e53d00f1fe6f67126a1e8e8ba3083a11596c43ebd649849fbd. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DGA062262610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb224ab4103ad12ec2567d2b67c88c679d1fe511de157489501c0ca6e2a0908e4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX202267946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42971d78c0e6f78b2a2cac3e5593fed00ec4b902f4d8028a1016827a2369ac2b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRS182110420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487fc85b5bf0375d0b18cb140654276d50c416afad22299529598c9d639d70f2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAFB2025152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60af3adcd2b7af22d78e6275112603acc4e371d86ea662b7c4f6eb1947d5cd9f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAEX2021918.
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