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 0x527c6b04d0c496af96ba30d69118668ecdc972ce570c5f8952aecddf6195cc11. 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/91a94eb6-3369-43b1-a88f-81b79b83e7ba.json and https://artists.proofprofile.net/proofs/artist/91a94eb6-3369-43b1-a88f-81b79b83e7ba.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 0x8f1e0ee905e364ae2dd816467132637f0bda1aaa5335bff770c969caef3a732a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBKQU2225389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7678bc252ea6b9652ab33271a6f69ba2bd1b6a1f1b48056926268a68f43df9. 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/QZS632265194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc336aa8988b3bb92afaf7811d20b66d9380556ed4f193c12717076c02a76f68. 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/USA2P2262958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375f793931d99dbe1eef3950be442c53e987577bf4763b49a62ce0c594568107. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USA2P2417307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41577bb0e0c271f7b5580bb07a93775f7bc49f39d4c894add06aa4292fc244b5. 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/USA2P2417308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0771bdeda425201896ac18a32c00213e4fe22d4950a22a7d8241ac024d0feeca. 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/USA2P2417309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb733b667f0966d3e5307ea620d631e5896ae441b5f98c6744e0f8037f1d298a8. 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/USA2P2417310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44235a6ebf15fa03770191aa9de36466051dd67b695362893458a6c52fbe60f. 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/USA2P2417311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462ec1fce1f62e69090c6c94fa0ade0d8c6fc1f1efbbab7da86e3cd4a80020af. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USA2P2417312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc537c26ac64c75a8127625e754fa755825d669dfc38590f2d85d4a2effbba022. 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/USA2P2417313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c6781086ede7dd4ed034301a73ed261aaf02185818fddea1cf424da29c0061. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USA2P2417314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e824148a62d32b07077a607aef0853e96768b61ddd1da721ba424912a143da. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:34:54Z), 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/USA2P2417315.
Lunatic Paradise - Compiled by Sid Robins & Space Wizard
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39da57f14da27f68acdc72778422a4e7fa54cf4af41137937e19c74a89e57fe7. 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/DGA082347899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9359ac5ee3ac59a23ac1043483b0b64591ea75e25189023c65806da5c5baf3. 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/QZMHL2282804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c03c6ee0e0e6c451506cd0a1bc46948d263ceb5f58068d516f10ecb41dbca0. 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/USA2P2033192.
Tales from the Shiny Woods (Vol. 2 : The Wise Shamananas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f14e14c683caccf75c9ee5fa336e6c2f59ba0e4c8b40c33e9dc2b661a42024. 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/UKR6V2371761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94156d69bcb49fa4c0ea713233d7fca16dc00479ed302084950bd5a829046e85. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/UKR6V2370869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60de645c890c8cc0f30c7678dd068ac81540f9462136e30dce0db7e0c50b0b48. 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/GBY3R1600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf1fe75c78f31d1425a15e0c12b6faf44bdb0d74f523b08b0ac0479dab0ecbb. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBBYB1502303.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch