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 0xd85da2fba09def7beb8fabb95c9a5442d71383bd58a04c825e1b7c5b64da3663. 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/dacfd27d-3130-45b7-a9df-279041ca52cf.json and https://artists.proofprofile.net/proofs/artist/dacfd27d-3130-45b7-a9df-279041ca52cf.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 0x49fc28f5fd04411a9ed567912f1f41d382b0b2f516b744f5f00c0c474edb3527. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZNWX2237239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5876a47222bb5303b16fe5f0796a33cd5c100964e6e152d7fd27315fd7919c. 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/QZNWX2237201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ded23b253a94f4adddb310ab8dfacc923297a585b3acc48306a5b6c28dd61a. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZNWX2237199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607bb9f163c1ce25859025c1b6fba2fd46ff524cd89370863f40c72eb43b37ac. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZNWX2237240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f27397748256972d426c18b7fb0fe5c53ff6e21b36f4e4b4e79fb5b719fa3f6. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZNWX2237718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91697d04f83e06cef107d47717c993b1aa1623c5ec20140c32dc3dd630fdd6d. 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/QZNWX2249788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6890c0651914eb3d874b2087bd81570b2ed24d15f133b7533a045ed644fa2641. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZNWY2217571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf825a392a3b24fa328ece189db0db96263bd9360547c61df2cc941b34d6350c2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZNWX2296708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef66373f578651532a49d072eb54a1fc325a5dde99e0f9e8cab9d18921af4b8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNWX2296709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858330c3ee0725a5b3086be757570d8fecd916a2cb6a7b2a5da208827313fe69. 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/QZNWX2296704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5947c75b7f51c620faf7e020dbd67779226b187d4efb12595d8a036a5a208f7. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZNWY2256191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6308bdc0af6ba93806b84a89dd614fa49d03a86f2aa509b4570b4f25a38d535. 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/QZNWY2256190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78f63d198c273d2f35a27fdebda9e133966f29a1b2e4f3344276a8b46de6c64d. 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/QZRP42277418.