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 0x68a007afbe399dce3e6718e152a1958bb82822bc479f020267ff519621166ef4. 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/06b276d3-d90f-4a32-9653-34bf526ffaab.json and https://artists.proofprofile.net/proofs/artist/06b276d3-d90f-4a32-9653-34bf526ffaab.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 0xff76c700783308c28b569ca2a56b72b02a5beb1a0fdf0f4f0d0ed99e941982aa. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USCGJ1664351.
Auxilio (feat. Stanley Clementina) [Renco Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda9ce0a632202037d1dcdabe9302b0c3d8ca956a136608401c43a8c07438fc3. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/NLZ541900248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b834e4e96532d0807da171a748eddf9a589ce07a96110e80579db4f83c78c4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USL4Q1948593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb151389cf16bf6f0e1e1501610799624c3968e4f01ef8aade8b195ddd97c3638. 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/GBWUL2043733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1328ffdf096407162c73c0d51cb025f1a88a26e0ae9827a44a2b986c23d8ef33. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QM4TX2010565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fddcf81399c8a9ffa2d0892af607c82e4c5ea47d1f122d9dc590e527356303f. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QM6N22183505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522a3e482423557187bea5428eff253ae375dd4c04751c6761f97792ae54aaf2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES75E2201715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2540cac81e6d09cb4c22882c696e226a76b50c93eb62382b8f1b9e57ac3a6252. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZTBD2421620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d262b210f98527506d1c45f8a03fc9fa12b8797ff32a54bd1df06ec7a571c99. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZWFG2409757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411fc7ddc2d17920d128f97a5d6ef670e34ad3035744814a5c0e7e03f23ff7ff. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/QZZ782417530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca895875ba70eb58df252eeea3f0a1789ee533f37d387f5c74b4f5df1766bd8. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZFZ62592293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf9c5a16b109b52a29b4435b62a5a11f2c5011655f243fa3d4870bf7f2bac9f. 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/NLS241800327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f33ee3ea6ec0376be20e362cf6fb4c5d57655a01be5ef4dc56902e9943912f. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/QM4TX2221355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf08d6f6a79d188abbf0fd90b620e5ab987d39a75391d4170c82c67930b8c00f. 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/ES64E2203606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c7f5602705df234f40c4a8af39fd26aa15f009264dc9b077bd99fa81254b8f. 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/NLAM42400062.
A$$ (feat. Sevirio, Ghetto Flow & Nixon Joseph)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5d9f4ee4d122725a638aaa98e99ef8ffc77bd7ad723cba894c723bf395722c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/NLR9F1800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184cc0c6130d1347d3a0169d54c32b9d1ef3de3a1a8079516c9e983e595b2ec6. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/NLAM42000253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe940e124cb9b24197e4fb3b60d0ea09b9805ba8a5b8efd3ffcb1a4750870d0d3. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLR6A1700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21195c993d789d335ea34f2d8c4369c3464544a4cdd4128869975e8371a4979e. 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/CH7812416208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c343a55419e5d156e3c7c1ba754718decc4cb570d6a7a3836da4ce185b453c2. 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/MXF152200906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bb770f07ebff45b46ea302377eca564db5073073ad0638d32d8193a50a3b09. 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/NLS242000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0f624a50c1354d971fa74b91a6dfe269db86d237becc75be1cdee9fbfbd650. 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/GBKQU2174239.