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 0x6d15951a4aa2ada6789034428ae9610a412a4db2235272d20aa1074eca3c2e85. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/db6b898d-99f8-4ef3-9790-879f97d15afb.json and https://artists.proofprofile.net/proofs/artist/db6b898d-99f8-4ef3-9790-879f97d15afb.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 0x787ef54190e6f941c3ecb776ba6c87a1a6ea072b9cf8c703f5203a5e7fa649cb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAFR2186834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afdd5b9dc5df8ff93bb137cef56fc5960f8a9ccb76a9123757d94e1ba2d2e79. 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/TCAFS2106356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f6e0e65fb6b3adcd9d57a88b17bf4d0b5e5f65bd93290bcb9166af45d749ef. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCAFR2186839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9cf673b6daca803238d27e0b68f26ee42cf748782b63bb0a2abcb285cbd072. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFR2186841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb353368d8776b6f04ce43d10c27e5e91f214f36f3d1c44e788314c3c846c40d4. 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/TCAFR2186843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590f845c3cdfdc7ff30c4508d0dc888848db117b9029e6abf73c8ebb9199e3ad. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCAFR2186846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5187e8fbd555af924a19e765666a6d8013fd258c03e655ab77e38d515f5acf31. 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/TCAFR2186848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b85cffd2b2bd43a1dd2e6bf114f45ed5873a5b7c4cd20148cf02634fdd7183. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFR2186854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836d1092353877af11e5cd5f5c6b735c3b17e4faa2e9f1878d01f3641e1fcdc5. 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/TCADN1855487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a009ba7835ed31b406c4a7e22d9faf524fc5bc4aefd8b6886c43508ac64dd59. 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/TCADN1855488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc5a682ad59f05a237b8e0f2e466e92134bb0a94fc3d94b93bdbab32c193c2a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCADN1855494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f89b1e9b06fe7531d8de180a7cd853ac5567e6427f3422a2999a0260941b76. 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/TCADN1855495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8730d7ab224e17be259d229cce08ddacfb2abe155b54d3d6e3deabbfffded869. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TCADN1855496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc830f4f9f15257899ad62f247623c0fb0030d65fa5534a709263d71eead7bf. 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/TCADN1855498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256531f0320d7cde9d4503e04bbb64f59f3083c01b428f9b401a1d1ec7944cfe. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCACG1591768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4ce2b69afa514f4cba24f9b08e85b0ea6d5aa25667ea7296b2a04ae8e6849d. 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/TCACG1591779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x740e467ced8e5b5de739f1e8abb3fe12a025d532fe7deae0e03ea1107e77d9b4. 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/TCACG1591781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4ea487226ce98821bfd0ab1e9e33cd32ebd39d0976a0d5ce4db213bafe7b09. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCACG1591782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e214cc45cd7a7a9e079513855514876b88bc7c46f1cb586e19e93d58ecd014. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCACG1591784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06695178c373b13cd00ad7654d0bc9bca9a216a05c2f43bb7c590d61b394698. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TCABQ1301147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7374226f880f131fd53e2f9cfdd46576175a0e305b4da87a3009539bb9368b5a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCABQ1301148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda11e9de40915d514c01215481d3598349c957a38a3060d2b4dfe29ec8fae8bd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCABQ1301150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f420d83e3771179d44e9264749c4353b22f9138ed92127d1264884140e2881. 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/TCABQ1301154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f823522462c981aa0a1024af236f96ba66f48976a6f338701f6d3883218757. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCABQ1301156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac05c995eac156528c2b2f72e72fb419114751f1b12856a1229a90a8a321195e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TCABQ1301161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7118a35dc321300a2b4f86ffedf8f26c86cc5e708ff9875af2716d37ef489675. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/TCABQ1301162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5b47f8e86d19b64c0b1cec5908f2b4469ba2e22176052b9368b29d98e4a417. 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/TCAIT2429323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf913d31900c562e6f4380e4fb1b242e5bfeaa6fe7a32712c0cbe80699d0fe64c. 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/TCAIA2477031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32b723dbbebf1bb94d5b6e699c8d0f56506af871dcb66ad3d9414e24dda4969. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAHN2393108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68206d309127afcb80c4ca5a0724097aaadc1440e279ec4d9f772ff6bc29572a. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/TCAEY2096318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd714be6d248e10a371cf13626d8d54d7f13fbf255f219b5b5007594c5aa4ab34. 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/TCAEF1990200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836d1092353877af11e5cd5f5c6b735c3b17e4faa2e9f1878d01f3641e1fcdc5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCADN1855487.
In Good Company, Vol.1: The Colorado Sessions