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 0x8baa55561276acd680f89c3719ded5ffbd94fadcaa75cb2ae57eacca56a033f0. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2f5c1a62-21af-4ac5-89b7-1945c5a265f9.json and https://artists.proofprofile.net/proofs/artist/2f5c1a62-21af-4ac5-89b7-1945c5a265f9.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 0xebf6e63a37b6987ef176dea5bf47aaef7d6a5b79ee16c088971895ba16372d23. 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/USCGH2164785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbaf58fcb51d588690741a6f1120087b6dbbb2ee98df85c0ea86a57fe15eb99. 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/USHM81716074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b597917a65c4dda02f1023d4581768cc86b9217acc1636091b265df4be0b0b. 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/USHM81716078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bffa947742259d516055a765fdae8d129533e17dee31ab98daf7d9cd68d84cb. 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/USHM81716081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108f30ff499d7be21a493ba4c45a558a988774f5ccd5d6aeaf0902e9157ada1d. 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/QZNWT2212219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47911ec54c9074a2d1081eceedb107b6658e55b9f7c2e73848763f3e7174bbc4. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QZNWT2212225.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c89f08c2f51a151e0ae82d5971c85c443a2e808037b56af7e405d4056a4c3b. 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/QZES72326917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeeeb03c7727204d38caa2e7d50f083b5283a7b587ce1460156a0502f5070166. 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/QZES72326904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f969d6a712ee89b619bcb94d2d712ab44d5b71a0b9f8055b67a014983adc112. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFYY2037588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3a78004bc574fd94f3c6af14d53c636b5a98d713f6455438a8c130307f724d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZFYY2037589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf521253ae81bdfa9e6b6fbebc0fa93c560915925ba48d309838da7812248aecc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZFYY2037590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241bd6f937929f57554dcbd10d4c5f38c366decfd3949634c21346fe1d7e928d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZFYY2037594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8f05f487e9bd5c9c3c0261de6d502fa22d69603801933480b0bfd0e3c69dd2. 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/QZFYY2037595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05e673180dd67b0b81b7fb9a14d6e15ea4958ea40b3b3148c62f7b6944cbc357. 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/QZFYY2037596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda0b7a1029f3c18a1d5a0632453ca33c039085c493618d66aed9519692d814f. 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/QZFYY2037597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ff739e441aaf8ac0973bb5e71eb10c0711616c364820137743581417d41c17. 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/QZFYY2037598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3983155721ac55de7f36087c009e5060f73c8012bf917040181097d9c6bce59. 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/USHM92145517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72907193cc8f0408ad030750e0de18e85d35f36dc5ebd3b25b2398d9b06e05c. 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/QZDA82312460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3f4a86e3df7d070a86980a49eb4beaadc9496986dddd431240b05f39c97732. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QZTAS2470784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b18b1408a806d807e94dd5de9df7a428cd6cf1c6bb241e1f90746eb5fc36cdf. 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/QZTV32574951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb69117de7a15b0b74e6915f231094acdccd3ee2dbbf4764c649a004e417812e. 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/QZHN42560292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf33a73b6ebf6744b6b4c42268d1dd8434fe27b350023553da8aaa94d76322c. 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/USHM82155508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c2cb032194246d8628b846aa0f3aaeba157243ba16c749e9fb1f4861103526. 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/USHM81812658.
Return of the Real (R.O.T.R) [feat. Crispy & J-Con]