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 0x7959a9a0dc2177de03421dc102617c712dffc21379c4b137981f8fd8cb6179e5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61b02235-bf33-4c6e-9ed7-7279a62372d6.json and https://artists.proofprofile.net/proofs/artist/61b02235-bf33-4c6e-9ed7-7279a62372d6.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 0xae758f8eec6dda8e297bc31462a43b3cccea6a0854f569482e578af2537b290b. 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/DECE72300502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c285d4aca62ceecb47495eca57177044c815b9ce2164c3edf9b0f8a9af3071. 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/DECE72301548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf947156901875492996ee55fdc13ab269ad148b963e2db78a00cba50351590. 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/DECE72301695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c285d4aca62ceecb47495eca57177044c815b9ce2164c3edf9b0f8a9af3071. 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/DECE72301548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d45d8aae153a00c9971ff93986c33f807618e7e0229d3b932f63fd3e733f8d8. 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/DECE72301922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf947156901875492996ee55fdc13ab269ad148b963e2db78a00cba50351590. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DECE72301695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c285d4aca62ceecb47495eca57177044c815b9ce2164c3edf9b0f8a9af3071. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DECE72301548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae758f8eec6dda8e297bc31462a43b3cccea6a0854f569482e578af2537b290b. 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/DECE72300502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bac88fa930b8ee75f846444fa8d307b2c5881eca6160c858ac4388a7ac73e50. 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/DECE72301969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d45d8aae153a00c9971ff93986c33f807618e7e0229d3b932f63fd3e733f8d8. 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/DECE72301922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf947156901875492996ee55fdc13ab269ad148b963e2db78a00cba50351590. 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/DECE72301695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d45d8aae153a00c9971ff93986c33f807618e7e0229d3b932f63fd3e733f8d8. 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/DECE72301922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6025284f1c2e2f7c9ea43d17026437a3db0372b4b7baee89a74655923935334f. 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/DECE72302078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35abb4754f4c4ef4570c780a4140063b9fd3a4fb87fb45b73c166cd79f14e49. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DECE72302075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3412fc5dcd168b9b42e62d2f804149b698da140f1980f65a6cf81ff36df9f72a. 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/DECE72302079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66453f84cbdc5011a20b828f4ef763d8597fec53548fcdbcda16596569bb5fa6. 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/DECE72302076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d873753d58016fc590f438d055ee7454ba12f8ce8af36ffc268c013d74f3985. 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/DECE72302077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd421cf290680ceb55f10bda3fdb134b51318bb5fa87cf9d33377683ccbc51102. 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/DECE72203610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50863b73e3c9a17f5ac982b4f9d03c9c4b2c85c8233c4de518aaa0bbdbb5b81e. 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/DECE72301739.
CATCH YOUR BABY MOMMA (feat. Camaeleon, Koushino, YY)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d79326769e9890d01aaac301ff9f502ae88105c720ca503852fcc8591863e1b. 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/DECE72202428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d79326769e9890d01aaac301ff9f502ae88105c720ca503852fcc8591863e1b. 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/DECE72202428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d79326769e9890d01aaac301ff9f502ae88105c720ca503852fcc8591863e1b. 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/DECE72202428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d79326769e9890d01aaac301ff9f502ae88105c720ca503852fcc8591863e1b. 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/DECE72202428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42af3960f1a468cf6fe8fde44610cd10ddf037eaeeed22e2d2bd1b72341a110. 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/DECE72103811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a12068ce19445c0a4d0b6769d3cf97070b6f1202ad07d62573ce8451a767c4. 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/DECE72003501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013fa7d17cbf537b92f71ea94479edb546d7ba295dafc1d7bc3c0a5a0c38cc6f. 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/DECE72003504.