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 0xbd3e4a971ad9184ad986bc62a1cb6e33284b028bafa3de726b12198af287e9f3. 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/2b06dbe7-7a9d-4b45-9c61-68f598fc5493.json and https://artists.proofprofile.net/proofs/artist/2b06dbe7-7a9d-4b45-9c61-68f598fc5493.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 0x6a9c8e994dfed394bcec7f1a387e3489aaefd8d0fa1441b45eed63cb0e4f33b9. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/SE5Q51815242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bdaefeb7040c64081cb22521055483b4d0896f2ec89f3545d7e6e63a82f33c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE5Q51808467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14bdbc8608036e06855c7e1d0634c70c8383d65730ad17205177c2fd2facb078. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SE5Q51822225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad7c0e0cea934628a1c913978d2aa3e6b6590edef3f9866f4a9e49a290b98e2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE5Q51821379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ee8e30ca815e724e67f826a631d23c1088620fb67cdfd62fc2067a0f67cffa. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SE5Q51807064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2dc4b8c51fbd55255bf668824935155c44c62ab9e912770c4f231b78ba329ee. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/SE5Q51818473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaed959140ccd2807eb058b003d916c71b89f093a6a9ad94b8346f99e38ea860. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/SE5Q51826496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685b98634d21f6aa87cc5f378ea7dd5ffab04d0056eaf12ded347f5c34ba484b. 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/SE5Q51803963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a6c783108ea2e4939be766be2a27bb6fb102f320f5175ebbabb94d12b9add00. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE5Q52102425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098956529ca7e9c8e3aedad323ca31e6de65b0de8121e4ae837e825d529da735. 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/SE5Q52004015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eb4132b38b34d320293d8eac4f213dabf0f23ad952237899d3268e698a5880. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE5Q52101140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fb764e8d187c601cbae1a9a686940acda4acfb72dea5c108308e0579966bed. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/SE5Q52200367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46adc7066c47664a6e001d21a8635a6915fd7d2ed09bf644098e699bad0f5ad. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/SE5Q52200359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2649315f89790afa3e564db667627c9323cebfd17024f6202f817145bf7cba2c. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/SE5Q52202023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2296471cb7f9e2b83c2a5e40d1fd54a6739ced16e034b6d495ab96883f6eb69. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/SE5Q52201349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a8040b42124df6702a7593f270e1ce9b83374e79781f9171877359483cac7f. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/SE5Q52203181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168ca0bc1e6b316731ec93bcfd0533052346625195f3b5468336111a234c670d. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/SE5Q52202635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e14c663c4ba500a8df7d159900108756485f7d9c42b7608125bdade8248879. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/SE5Q52204164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068047d98fd2a171e52b60ce0c8a038bca22aa6c2e3c53509f779d3d323bf68c. 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/SE5Q52401185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c93c8947bddcc3c3068dd068bc1e9ad8cdb0aa27f64b659ce120326039fbcae. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/SE5Q52401622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d31961db5e7196b5ae97d0d372f89f2d4cc5f49f952ac2e5d9aba62b0f92fc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE5Q52402312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff84dce9cb5a0eca9def8bbd5feb1420db28b047ca7425d2ed36e1229a0e7e2c. 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/SE5Q52500366.
Epidemic Presents: Crates (Urien Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe807152a55a80072d181f9ea4960f78eb15f6adc714f1b0de58bd0a880f015e5. 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/SE5Q52001242.