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 0x6a39f585f63007a27a7d2ab65927dd45ba2efe6fa06485f80a76f97f579a9754. Chain 2 (Bitcoin): anchored in block 953598 (2026-06-14T06:40:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d110a4f-f886-43cc-8c71-5e46b1ee8bf7.json and https://artists.proofprofile.net/proofs/artist/0d110a4f-f886-43cc-8c71-5e46b1ee8bf7.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 0xacb2da9bf92280b6b1e35dcf927ce441933203178dc3569a25f92f744b1a6c52. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLLT2330564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70592195d1bd5c6a24cd574ef61f2baf063a8ee414a6de480caf868d5e7974f. 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/GBLLT2330566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf527a6d90e83ce013d9cede7998748680e4b110d6459ad1e5e0ed5443cea037a. 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/GBLLT2331450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc12e7be064d142d5f1fbc9dd144f5d9d238d44fd8054ad86824466af89f288. 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/GBLLT2331451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a5b3d688c4f752ebc6378025bc978561cb3c8c6021e85a8639625f262e0f80. 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/GBLLT2331455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1caa6267a8e31b38fb8e00053beea5112fa9371f0713b92c8183f4e841a6ca66. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GBLLT2331458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ce24ed0b78b5406c031391320bb8957fca21d6ec9e762f51c7cd377e0fcf46. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:34:09Z), 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/GBLLT2331459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5262feb5307afcbbc9d93c0cc0a756ab6d0ab34b641828f7c71521c3e4f15a. 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/GBLLT2331460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04098c5585a02b5b25dc8b4121f9c69cee17098d6d6edede2cad257d7c5c6a5a. 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/GBLLT2331466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97022880fb47ba13eb0008a9e92fc103239bfd56d028d12142c9771a6b62f4ec. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/GBLLT2331467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456d86d69a0679ed64bc16be38e32ab150c2339a7767c68f7db685e10e1b82de. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLLT2331470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c9e357cba63195404280b66c52547f8d7c72a34da764ed1dc2db0d512149ee. 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/GBLLT2331471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3607e1f99b1d409e227e26bbecba25612fc5e29c9982404df0eecc62f854eee. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLLT2331472.