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 0x38fc998c20cd281e46ab170fa42bdb14751dba6a9226c8bbdca9a6bbe090df43. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c0d3033-344f-4e4c-85d0-d6feee5956ce.json and https://artists.proofprofile.net/proofs/artist/5c0d3033-344f-4e4c-85d0-d6feee5956ce.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 0x4d1fa23d17e4ecf6c7763c32cf501d04dcc5f20e84462b924a7ef929d0af5a97. 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/TCAEZ2093932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd5dbc3c1fd9a5023a3a3957c3301e38455ac664e3f55ca7d3a19309eded94d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USACX2200638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ce390b5ec1e5c2d97254dbb6ff42b6c9928c4ed68c1b6f40b66c2bab6f8873. 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/QMGR32277464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d54ecb223f08a63c839d653bc64830caf93fc96d9096d9269c9d1e5f3c92e3b. 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/QZHN42277292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52c520cc52669aa74abedb3b329bc9a2c4a8ef1da996a3420b6e95cfd4d438d. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZES72243670.
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 0xffc1a6312a5cdc98344f19077b81931f4173628ab1c4d0e241a4d0aeca714969. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/QZHN42277294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612f95ef2683b03eb6bde3a02980e058b6a07b7491f9ee7038738b46c3016c01. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZHN42277296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d54fb514bf5f23f52bb0ac1fe9d30cce7e0c534c1a9b33b465aa0cc9b7b0a3. 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/QZDA62136709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a0c9a1c70036a7d406aa6d05a1cab0050ce2a03b9ae1dd55ba53e71673963e. 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/QZK6K2081622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f2de5a6e06d69eb027b88882d3607ae68256c54b4a3b4482c08a5fff7daf98. 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/QZHNB2077346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b4d091857cb97e651acc3c3a42640327b79681553e8e5aec404c83549f6cde. 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/QZHNB2027803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2acd963212448a1b84f7c61931d924b1a0ab4ed0e3b2743223fa58e18034b4e5. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZDA62097056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb1b34a4f38fe1bd2aabc92b804d96746580c2f52c8022bba1251d28e73908b. 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/QZHNB1943561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4c18edc0f7b5c4c25a84b7253a549d7e1934a0991dec184033bf4b326a86f4. 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/QMPNA2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9423d7fd33fd175aa7b62ffd628d64dad90f68b6c2fe2499131bf7809fc75615. 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/USACX2200268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72ec605c2464c95b521f3766b36585d51254811fd2162a78916320a326ce921. 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/QZK6F2202674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e247f3a5a6ccce605c5691a18f12a6f68d79f00812c3325b315a69611df28d7. 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/QZTB32291987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110bb9ddc96f72f2c38e08b5134d1495a665cc0d662792106dfac4dd72f56641. 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/QZTB32291996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847eaeb9fc43be6d4399a9c5d54de2a4fd96f8f79fdbf6f769549f5cfd19892d. 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/QZNWR2121671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x556655eec3fe0a81e03e0d1d75a93a3e0113d342afe99cdbed8d82780ac43efb. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZTB32291993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bfda601a172170fb65cb3ba24b56502be2465e4ada273c1ec387d4fa58c0e7. 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/QZHN52384892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c42ff8e5e58204e7ba0ff155392879f9ccdc33b2d433f226498133bb4f8552. 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/TCAFA2033522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b17478d2bb849fbd749c539284e4f120cee98a94f22338b03df338e29445580. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZFZ32025106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8b313c497b18585461db45a221e5f58fcc5eb28b3c18cf72c7f62c5985902e. 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/USACX2200784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f2d8552290aa4a068291f27fe5a2f87dc5b604ac1c9389b2416f99739ae0de. 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/USACX2200785.
CHRISTCAT CYPHER (Rapzilla Freshmen 2022 Cyphers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc0926ea781544f118e23c4f9a02b4cf931553b53e0fb593fd49ee4dcf303d5. 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/USACX2200787.