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 0x713f5c731058518709893fc85f19b110444971aac83d547aa3c9524f3f9ce3ba. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e8a255b7-0250-4cac-acb7-e05f763f637a.json and https://artists.proofprofile.net/proofs/artist/e8a255b7-0250-4cac-acb7-e05f763f637a.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 0xa5b9e5eaa982039ee43163a9f1f4359ed1c9b3bf16432813b0ba9eab8ebfe235. 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/QZFYZ2312475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973a287b3938a8ba3531cdfeaa430e6a36999a885beaeaa9c67733024eadb314. 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/QM6N22372341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7018912b007537c0f931d03a23bc712f1586db9920bc56dbfb954ae968a4a87. 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/QM6N22372811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11afbd27b41e69061adc9c5e5770d16e4509cfce0f24dc34b23739ddf16c1b83. 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/QM6N22377724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9d5cd68df1d5e60da29f5d6b5764fa62510906685445b00e5f74e38ada338c. 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/NGA351700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9d5cd68df1d5e60da29f5d6b5764fa62510906685445b00e5f74e38ada338c. 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/NGA351700056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa720daf5a04bcb807a35d29044d4e2eb39e1bb397d65fca45b4773ec8ded426. 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/QZFZ22264766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde400874c70e22551858dffbcbd14da4cf52870bfe0342919ff3ff0029b242f6. 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/QZTB22249166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c462c469b78339961a95d976936de8383e9df8ad9b48cd6e77541187432b70c. 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/QZTB22249167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1099a2f575c6a0a405b756f9a813cf3ff419fb3404b2661e6ed435d1cd6470f5. 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/QZTB22249168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ee89f8c1a3171c1df035b95522e52716ba2727abcc0f25bfe20ad2d19d1cdd. 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/QZTB22249169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ec4a235e5f401da391df97c2db7cf64b068cd006175e41ff1a5cdd7bbcc09e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZRP52289135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae31581a1a40c709eea74ff92c5c5a6e033809a7d9f16911fb8cce51563fbc83. 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/QZMEN2247798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa720daf5a04bcb807a35d29044d4e2eb39e1bb397d65fca45b4773ec8ded426. 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/QZFZ22264766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7c066aab111c31c3ca36e3572fe6037fdd1ecc1e617ac80835b3fc5c2f6d49. 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/QZZEC2302532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973a287b3938a8ba3531cdfeaa430e6a36999a885beaeaa9c67733024eadb314. 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/QM6N22372341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7018912b007537c0f931d03a23bc712f1586db9920bc56dbfb954ae968a4a87. 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/QM6N22372811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fca1cbdd69d7d7a57e488eb244b16a1772c3526a489e1dd250d2c64cae8e002. 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/QM6N22372977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11afbd27b41e69061adc9c5e5770d16e4509cfce0f24dc34b23739ddf16c1b83. 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/QM6N22377724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9d5cd68df1d5e60da29f5d6b5764fa62510906685445b00e5f74e38ada338c. 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/NGA351700056.