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 0xc897173defe0739dcc0f89e0421d4df8d8e660df30fa2c7f446e1dc237b04f5b. 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/f1ee6f43-b548-42cd-9162-6e2cea7c6619.json and https://artists.proofprofile.net/proofs/artist/f1ee6f43-b548-42cd-9162-6e2cea7c6619.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 0x3ea05e1b15e2c52daa95582741deefb178c1b15ea8c929a9678eebf63c4eba31. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:17:50Z), 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/QMFMF1563174.
Hold It, Kid (Your Heart Just Skipped a Beat)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c28af292e998ee795dee6be28c8aeefcdf8416dd860bed6f2c5590ccab1c945. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:55:21Z), 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/QMFMF1563175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417d55581f9c64dabeb5310091888a464096a8e83e38c19b39d23fe5cceb3ee0. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:23:10Z), 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/QMFMF1563177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d7a2d08f87b304ddfe13041617d42acaa3640eeb270b25bd86891b3b08829b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QMFMF1563179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d3eb3a158c05d1b269f6c2ff30b274b62da1e1405b17f4817a67420d21d12e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QMFMF1563181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5d54b0942d917707853b9ba496475c9070709fff8c673f4983a1fe183b21a6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QMFMF1563182.
Gutter Gaunt Gangster (Expanded Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134c846b923a012e1aa13c064c1714272763bb5d9a40a601bad6a062644ece90. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:48:16Z), 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/QMRPC1270026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f577a7e3252a4c68de76bb116fdeab185a3e5099b96a28965961a54f9539b4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QMRPC1270028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb269204d6faa26c6e4b013174def5231c06b2333c64ce7966258d8b8f65637c2. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:34:58Z), 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/QMRPC1270029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d14d19ab74205399800b81771233a19e2aab87e6242ada18d2d79cc745a071. 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/QMRPC1270048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b59c6331647cd5550e4f7287050ef2899421764c65815607ed4301610a100d1. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QMRPC1270047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718e4c11a914239bc18613a0b078726edbd8af61cb3bba7a9a222d32fff33c2d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QMRPC1270049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763215758f8420a7844f6b4e1976f2f1574daafa58780e1df81617d5905f7244. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QMRPC1270050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1b363f29199dee2f4077f36e09ec4a3cbe6f7427b20dcf47738a0e2957eb09. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QMRPC1270051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb72ffacf50420de99eb1dd2b45b1648649d433dc425ad91c5172495400dc65a6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USLN61700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce47a84f6efafbb74a212a0efff51ceecd23c48383b2fa7536d592f27e8b14eb. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/TCACR1650370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56296557186fab217153bf3dc41b312522217d9bd3b43a6ec1db8dcc7ae5a667. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/USLN61700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796447bc9a196f706cca5d1d5f2c6a05dbc30297f34c477df034b53876a81ce0. 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/USLN61700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5488be5e404c1792c044b0340f6ca880a880f6a7bdf0c5d6d251ec0c41f56d1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCACS1658383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ed0a7c7811ed83d12cf63645515672395c4c4f50fea8614ea3b7b7b2b8ebcb. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QM6P41911425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c7b3d9f122fb054917ba94e41736c55b98eb46dc8756ff5960699934e9006ab. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:34:55Z), 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/TCAEE1996292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8033c1f99fe0dd694a5c6eaa2d5b7681a6781e5f9a0061aa76d5a9b1825b97e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QM6P41911429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ca6a1521b216baca5d49ceb5dd57fcb8405aa61f167232a46ab31064b01406. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QMBZ91929912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc7e468295a11c43f699b197412c5c6bf5ee4aa82401256c944952e4a69ed55. 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/QM4TW2081631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c0c3266696c3794eecf70e70f628038661c421de2727af3a4273e3055415da. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM7282015484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ffcf213a09e54344dd73588996dff76ba9d9c7f12241161e5089e0f3d019ab. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:19:46Z), 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/QM7282015492.