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 0x059a59304358cc0aec63d4ac6ad2145ed859aa9f6738a5e6ad080658201968d3. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/882122e1-ebec-47e3-a621-ca4ea212879e.json and https://artists.proofprofile.net/proofs/artist/882122e1-ebec-47e3-a621-ca4ea212879e.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 0x54008f879f20e1cc1976ec37582c0f70ddc3a82a8c620bce61ee5e8dce268558. 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/TCABN1361143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaaa641f28f9c323f90e8dac3241b6a755a6707abe81093a87fc2e648e5d575b. 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/TCABN1361146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094d6b4976eade260846320768a397729f162f56665197e6fb7c28f48ae0d25d. 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/TCABN1361147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0f43509e08e0896a03f381b97f6284f12edee356614d90ac8bf7df41eb5225. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCABN1361149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2a283e862903c2189ca40fc79a9dbc1b7259fad2d7c74962daf052b13fca759. 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/TCABN1361153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d1483393abb431799631fa47f0abb093d44343f277ed70c83a19c408fe9e5d. 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/TCABN1361154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdab739617fa1195c8c4f7edc0d89a61226af7cab32e5ac5e590e9a0f2b0cc69. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCABN1361156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f2966f5799659ba3f0a7101727ab1228a6ad04f669d88821f0eecbab566d1c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCABN1361157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213b0fe6d6aa709765afb4683a11fb125dc1bb86c31ce30d285beba9d753a564. 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/TCABN1361160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a28c49fa84811e40907cecdd80c047acffecc4146a71e2fe0944e34cb2a6657. 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/TCABN1361164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca84845d70e55c7af9f1440f598ce4a41d29d33b7876759dd975aa77c2dee23c. 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/TCABN1361165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d69f1cfe7059f70c5d193a4f22b485d2ea8aeda4e3646770634c9064b317ff. 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/TCABN1361166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda43b33a4f34c7913a06d647f2d18c884fa04e9c0f0231eaa35ac7d9cb782c60. 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/TCABN1361167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d5393f5ded9b875acbf6d53c91ea15ef70f75f8e6a9342f21775fca73cc522. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/TCABN1361168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833cf0084b27662f312d1588f5827ca24f5220530a541004be668f6c94a4af2c. 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/TCABN1361172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c03337daafe5db549a20ea7eb4cb9bfe600b8463caeff79b9c98b8e0d2d33a. 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/TCABN1361252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f57c8a85c0556f4734aa2a85e1880732e48b185de5ed9667000bf5fba393115. 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/TCABN1361256.
Move a Little Slower Girl (Good Timing Woman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7df149aff1a3522152dccef624eeb679dd78d3a79a83776f56887f81d1ff38. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/TCABN1361180.
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