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 0xae1811e7611e63a4d391c6a409f7c3199e40da7f3194d23c1931d6ec1a865714. 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/8e8bc973-7c62-4fdd-b455-20d22cf382cf.json and https://artists.proofprofile.net/proofs/artist/8e8bc973-7c62-4fdd-b455-20d22cf382cf.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 0xd7d3a57221c00850dba139412e231d8fa34917bd8990077f073ed5e74bc058bc. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USPR39400478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe0a781ca6976f7eeac16f485077b55e989ea7478699bde7a737ad12529aece. 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/USPR39400479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84777f0912db344237b5fb02bb9dd006f7a1bd09ee96bc949a3eaea8d2407ec1. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/USPR39400483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fcfd463f65e31a6bae6ab73e6dc481381f1288c06214fbad90be0e2b742934. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/USQY51009934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ff451cf6bf86c072749527a180524c51ebb526ff93dcd802b99654b8fe7013. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USQY51009943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc9cbdd75131e423b91d20dfd92195afa326c338412c40f88b82312a709229d. 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/USPR39400491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871a9902d0b0b6b61a13849bfe3d0911a9756a66bba15511da0563145cbe64d4. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/USPR39400498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde247aca9c2cbef193f3be8a3d784fb5478d4f680fde071931055aa2f8fe1f0a. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USPR39401722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c32fb3d462750fc56fc54c03c9a709227e7defa96f82571baf3bad817720bda. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/USPR39401725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81324db932b5301b1d63aa3c8483bcc88e82e867a6ec8adf0d311dc2cffa146a. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USPR39401727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6313b4b125fb8e3b23c864e3b72072872206b4aa57122abe6a79d68f50ecba. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USPR39401729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef023c5d83843d912258863b00c6cc66b25e4e865867a91593e4b7a627b8183. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USZXT1569305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83cc8fb17440a5502f29fbaa141faee78a964fa4c61945a4589a597c90a2c2b. 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/USASN1103811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1d8cb84ce64364953884c09e1e7204b043fcfcc2879c33c6c57843d65fed09. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/USASN2200211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0b1932474179b18af52c82f0ae6f00a15d36e6d3820fc2b54d39e8b9f762c7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USUYG1050142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533d4cad3d86d2908590e3491ccf91968f75ff88149a515ae1a5567b085fb5a0. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USUYG1050146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ef7d9ee8f983586ee04ef34dcab5667e1954574c74737392d985be266cb818. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USUYG1050174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddb34e85fcbc6081ee812a0098b4089cae5ac40c2c37d6157f776dd4dab6c9d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USUYG1050175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe431433c585b18fb07b9d52e480775040a8dc02a91582887048a5b210f5d0e0. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USUYG1050176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd4601c1e28c05d63659a9d7385965212f76a110d588b31025c437d4998fc17. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/USUYG1050179.
Now They Call Me Coach (feat. Infamous Age & Playalitical)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe511833525bd667e72e48d6988deaafe6da569f6557778ceeac47d74d11586dc. 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/QM7282157491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161e39e696a0f9c275bd0f7c31d0ba3299f7eec55db423811d9ea74f2a0570c4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAHT2310652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607a383ff2c73a1d9d23a41091f5a0fd0f2f2c26abbf175dcd64d6d42e2ce391. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCAIW2400717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0a2869b6d7ae14b9413f8cddabea26e3122b0a71eed0f245d1db7116329501. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZTAY2446547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245ab2344495321e4b432d2030167430552e902c781ef6e785a970bf153e28a9. 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/USPRZ0910125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795ba18132c9cd3874f9bffe2a0cecda296d6891ab69f2ee96a7f14f78696a66. 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/USAM70750703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e0e8e221664f91c780ff001277a932e06226b8827556af2b498b2449194a93a. 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/USAM70750704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f713553562bb64e078675ef1a1a9c45be388f7659ef7a8a670dd76b0ac0315a. 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/USAM70750711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd638aa2084236fa1770215c23712bf3bf7fd0e76009313115911b53e7ec36c14. 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/USAM70750713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e18952bcba89505b7ac024c13ae556250e951bba1634b7c65823e5e550a975a. 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/USAM70750715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8910aac288eec45ad87c4c63b00bbbeb2b58ec898a61723d77fe272a2b052373. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USASN1000410.
Killafornia (feat. Lighter Shade of Brown & Kid Frost)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0ac7484bebbb3e8d75d6fc4f66f7720ea006c196df1da8c890a9bfff435305. 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/USASN1103183.
Lonely Nights (feat. Lighter Shade of Brown & Selo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e759dc937bf9a9fee693080f51a70e1bd7a0f1642d968ec0d77b2db67df419. 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/USASN1101125.