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 0x5a5e025f9baac6da7edd642cbbccd1233ac46349a4a415105d6a744bcd8d4b50. 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/48e27bad-e2be-4539-a5f9-1dd5a4456d06.json and https://artists.proofprofile.net/proofs/artist/48e27bad-e2be-4539-a5f9-1dd5a4456d06.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 0x40a264a0e3cc8a7707aa451205309ea0f4ae1e9103d82e71d4924a1a7af6d4f4. 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/CA5KR2363058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496b97af34675f5926c63ae75b15d247a934335fc18ee003c932805033ea49e8. 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/QZTGW2100838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69197f188949edcb8c3f7d2e8fb7c502fc3f1b5284b5b6f9cf9621ce85cdd6bc. 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/CA5KR2194663.
100k Cypher 2 (with FCG Heem, Slatt Zy, Ar'mon & Trey, YNW Melly)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332b81cc6a121c00e78a3eaba44732567045f75a7a5217ddab819b0b1c1de945. 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/CA5KR2196104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd158bc1041c3055064d036ca54073037506b7244d96677dd568c3f5198da9073. 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/CA5KR2208121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5717db2f55bafbefd3fa492ba905e8893b9bd8be4043cf8da254559d234db12. 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/QZTGW2100712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1799f9a4230cd9dd513ad5ba9e5631ff74b91dea3508242b06423e482bfbf6a4. 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/CA5KR2207788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69197f188949edcb8c3f7d2e8fb7c502fc3f1b5284b5b6f9cf9621ce85cdd6bc. 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/CA5KR2194663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f28c3e127e16dab69ec62f0e3b2322eb3a0cf418602a86fc2ea9338bf3cbff7. 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/CA5KR2208122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d35ccb0b36bd3e16e1e73f0ccfbd54180fe419b661f9965918e5d26cf89857. 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/QZTGW2100837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52be721f256cb46cdcbcd16967718cb6a85533321f208842fa4efe37abb3fa37. 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/CA5KR2208123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496b97af34675f5926c63ae75b15d247a934335fc18ee003c932805033ea49e8. 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/QZTGW2100838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c392faa349b2c2b6a2fef6bc018bd69485526d96c3d2de5546c9cba91b5eb44. 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/CA5KR2208124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe741ddfb43a9f90be0dc402b2998fe3ea00f2f7cefd1689ca06c4a9391868868. 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/QZTGW2100690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443a43ccef9ae8bd5899b4d7cda458a5e8889e0eb59da4c0be354acfe71f31f2. 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/CA5KR2173889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1097b53adda9db83b9dd4f4c0c50827226adede32a9c08449a05e723274f1fb4. 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/CA5KR2208125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6acae8893b60b6f1d03ffe76bd97864c7e16093229c9de1dfb36bf504e73a86. 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/CA5KR2194657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a5d94a0d161548f386e1b16f5ae45d9b51b0eefe3b7937ffd371c4ccea2f83. 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/CA5KR2356903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd5f5a86776b31048c1c2f5a301141d9d52846407ed23676d59090d163e1ede. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/CA5KR2350887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb7196b8df0c817afa1ac8a64f968760fc27b3be8e74197c60aa4f365e9d77e. 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/CA5KR2270985.
Tears of Joy (feat. Hotboii, Rico Cartel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d35ccb0b36bd3e16e1e73f0ccfbd54180fe419b661f9965918e5d26cf89857. 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/QZTGW2100837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe741ddfb43a9f90be0dc402b2998fe3ea00f2f7cefd1689ca06c4a9391868868. 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/QZTGW2100690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6acae8893b60b6f1d03ffe76bd97864c7e16093229c9de1dfb36bf504e73a86. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/CA5KR2194657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf93fc64414fd93a7c1cb5f7ec7054d1aac7ae665b67741244dcfdcf1c0adc9de. 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/CA5KR2180987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443a43ccef9ae8bd5899b4d7cda458a5e8889e0eb59da4c0be354acfe71f31f2. 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/CA5KR2173889.
100k Cypher (with Hotboii, 30 Deep Grimeyy, Prince Dre, Soulja Creep, YNW SmokeDaLoc)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cf1e593ef5652d6739c7c83a7982fadaa1c15a628ccd1e06d1fe1b2760652e. 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/CA5KR2153421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e4937c494c89fe1ee33c9301297b06d16dfff6b5d80c6c09154cf2baee5244. 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/QZTGW2405672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0330e5686009c437125d080de82e62d37497e61238f17cfa0f5f3b1a1738f5a3. 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/QZTGW2404922.