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 0x33968a67f316ce2f2977d1bde6e8b5e6764e6606529de67da7e46d58357ab77b. 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/25415de2-a0bf-4193-b1b8-53d3281e11dd.json and https://artists.proofprofile.net/proofs/artist/25415de2-a0bf-4193-b1b8-53d3281e11dd.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 0x8f1c16bc9687ed3238430aa53da0f7c5b460844196b87b1ebb753a8f200fc309. 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/USAR50551960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde2675d19ff15baf476c2b74d84e529e5cee45882876639134d9a00c6ba9992. 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/USAR50551961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c97d655b4b91de60a4c850d63229348701d57f992ea43d3c65a84561116bc8d. 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/USAR50551962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf7a782d42a9d72f9697fded256b452f36e6f9b74d3bee1ba3316ca0949a06d. 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/USAR50551964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf626351627a0526320000a35404de03bbc4d95c8d87f3557af77ea0c8f2caee8. 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/USAR50551968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a3ae4c5824f911cea6132d0526e41d2c7ab04210812f36a04b0fcb34f0ddd3. 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/USAR50551969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62299ea455ebfcec4039cf4476ebfd275f377e6e338da8445811d9c88b913793. 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/USAR50551970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbbcc984cfb9294dad94474a4d8259f9a286679e79c667743e13cdaa51607df. 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/USAR50551972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7da7b9a82d3158deda0c69bc1bc59a7efc49dec658539b0579b625fbf63c94a. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USAR50551973.
Keep the Guns Cocked (If It's Beef... RMX)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0fe3c67490a3cb841aeb74c60e6848d7896b71a24abc01363c53513c98e9ae. 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/USAR50551974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8370a08c9b5f336d159fcb2650a02c39cce8a27b0c465b07cac56cb81473320. 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/USIR10000767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4d3a129adfc3748e320b5df9865d56134fe5ee8b50a8288f1bf66854e313cd. 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/USIR10000764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a08574027fff52ef30002fbb5b04219494d6641c43ee0130c77415a908b655. 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/USIR10000708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a8dab94aa329b7aa2845129f2c061d8717044686a11d7fefb620700522a1ac. 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/USIR10000777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe05b096548d90bfe411f27f765b074d406014ca8aecb97d6aec9e1918656ef4. 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/USIR10000774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb899ec78ba92c6e110b8f41dd636fc9f4d10633d9ad887f8751ccb5871521b1f. 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/USIR10000772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbba91efb562e22a8201581dadcc28d5b7efeeff4ebe54cfe39f25d8acc0687c. 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/USIR10000765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80c10955e54fc40f4141d9a6f9ee69f1d86c759bd737902fc135da187a02a0c. 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/USIR10000770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c6a3580d9b06a109f1bd7c0c4bda36d7a90299b4ed09dbd54ce4b7df19b744. 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/USIR10000766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6369c20295560e5825eeead77fee1662b49cb488d9a1cbf79bb4f0afc2c3e9. 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/USIR10000776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db5cb990a69a3c7b783a28c08cf813eed6fa17f741f08df4969713fc591770e. 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/USIR10000768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b215086607a371c6b54d8cb5c7865b2e40e3f6e01767a7115794fc576540e44. 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/USIR10000771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515736c3e5574cdbbcb65dd2fec679e7238d25d00b61a8590cb4d6c2d07f9611. 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/USIR10000773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36d6136a1ba6c477eb982bed9df75b7aeb3dc48f6cc9367380fecb97a24e0a6. 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/USIR10000778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d5784a5dbdee46b771cdc8ea2307c5f55c0a71d2a5f724b2fe8ac1c4f1123b. 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/USIR10000769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afc72c7083dce1146884b0e82dbc4d1130df0481babd21ad27045e1d06eac68. 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/USIR10000775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4fb905821dfb405f79a143ff7d9e7486c814cea8b68377907381ceda662001e. 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/USIR19902110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c35b26ebcbdecb5dc3fb514d295c4f9dc6986b5ab3f45f1eb80d84d34f9db2. 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/USIR19902111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793c4df8e2b906844fc7fc1dc71002a88202f3b0242d0f3c18c720b021506be1. 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/USIR19902112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe61a420ed9fb56376323043dc52cfdcffa56f4cec576fe6651531066b10fee67. 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/USIR19902113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb783a805e8faeed36a177d84c7432965dce4bbebe044f50408a64456e6eab925. 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/USIR19902114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc32754202417b13a0bc1f41dd9a3e3d28b3ceb02a90b1e67999d025a18f9fd. 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/USIR19902115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda3d02ba3ac49209fddafb4b1fcfa2385cf7c1638b51e27ebdb605d445a2ce3. 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/USIR19902116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a4d4564524c19a824269b295332d5f9ce5bb014092a7c0b0cc89d0c7def872. 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/USIR19902117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72509040b21cf797e2f808123da9edd2b448170916e8fbbd553db236205e139d. 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/USIR19902118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab0d8cb6814be2eeac0b61e818934f87e3b40375944019d3df58525eb5b5a31. 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/USIR19902119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aceb45886066ad1f1c801624ed8731ff46891d38a5951797899772f8fbc05d5. 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/USIR19902120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8fda19e439edb94e104b69ce5245836bcb5cbd226b23b6dc56ebdb1f8158de9. 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/USIR19902121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c42811532a4b3a475703f1615d2081c4758651f30bac0a3de8509007c514af. 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/USIR19902122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3a459c68579e3a41e53d7f6fde5f0d9bead193a54e2994949c38db6bc378fb. 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/USIR19902124.