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 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 0x38d876c587735454255d9a16fca95348092ae19bc6fdc13a8363c847a03c545e. Chain 2 (Bitcoin): anchored in block 953704 (2026-06-14T22:58:38Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/775826ef-8317-4400-9f5c-2ea2ea1bf77e.json and https://artists.proofprofile.net/proofs/artist/775826ef-8317-4400-9f5c-2ea2ea1bf77e.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 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 0xef22d6002706a415cf955938d9229bfc2246fe14c94f3185f51550fb2ed7822c. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/NLRD52324675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bf47dfd809a5584f3864fe9e9d8c7b6f279f1b9d73270d491841f9eb6360f4. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/NLRD52324677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5f7d2922ede8555292a370f069ba9ca30ec591e90f54c755420980b5433b09. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/NLRD52324676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbae0a87f55bbca23e35228c118dda32174176a4856fd1000cf03cc71ad3c76. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CHF032405308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2aca23c807ec4afb2426b54d6757ddbe5410f8b7995215be0437edd48e5722e. 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/CHF032405309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195d59c61c3dcda7bb641f330b70dd06b555eb83601579767aa93cdbb087e2bf. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/CHF032405310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9fca71f21ea33c92ee8cdececbbba65d74cb9a0abced1b5266b0a0a67fecb7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/CHF032405311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47a487f425e1a824172b05add3c7f00581441f236d757fcaf72f1a171de8cad. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/CHF032405312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9d8dc225df361a2d592c44daf023e0b01f5b07eaef6afaef02100bcb2d7510. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/CHF032405313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c561ab8c55099744df03f2cf505953f28318ea0e21b75a8a640f0fd8e38b4d2. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/CHF032405314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99960a18f809321d327a6ee024b5d5f5ea7d100a813cf250d55dd54640858131. 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/QZFYY2142397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e81f9bb9fbcd87ef2ace1fab73aa7e2940f861de52c8935219d83e54c03697f. 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/CHF032413463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02909190139a611aad449247d02485990443ccc277e6453de1f3de0d1e995374. 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/CHF032409545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6900e794c00c315b87456514fb9242881cee69bc49f7327ce1c3251fb9cf63c2. 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/CHF032406550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2aca23c807ec4afb2426b54d6757ddbe5410f8b7995215be0437edd48e5722e. 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/CHF032405309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65045d7d3a8045c89dfe8ed42c2b569d4540bee5192bcab34ae5e90da4b2feea. 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/USHM92292600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6372db9028179d6e88dcf8e5ce6989154cf32c950dc3801cf24c0aca512e72. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZK6H2102295.
101.Hip-Hop Cypher (2021) [feat. Prince Rhides, Kumba, A.Y.U., RAHULCASPER, Ritzy & 101 Hip-Hop]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dd027acfa433ab90e7ea09d05b88bf789df4a305bd927c1bbb356088075345. 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/QZDA82177487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ba39360f7f39c147f1ac961e0f1ccfa53612947965a382ac15cbc0f9d1cca3. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CHF032415021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90613cf6a7a7776d521e862c52b5903c0fd45ede4797848a0abc4f9fe34534bc. 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/CHF032415022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02909190139a611aad449247d02485990443ccc277e6453de1f3de0d1e995374. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CHF032409545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2eb7748aa37adbe2e4038c476489c701c9dd0de1505e339aecf0ef683c0f038. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/CHF032420867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7485e01272c6de99ef10a570412ffec0cbb8454f05a6fab7be47d3a7201a2d86. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/CHF032420869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2219e64284e893dac293168bbf7f9484dc6443e1dc81113d6cbc6a87d4ad5241. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/CHF032420871.