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 0x60e970e844b1418d0824bc857cb6704107e8f9ce65a79e474d87adb28e1accc1. 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/54f8d169-de2a-4545-8bf2-0fa391b50eb5.json and https://artists.proofprofile.net/proofs/artist/54f8d169-de2a-4545-8bf2-0fa391b50eb5.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 0xcffd82848beb1d2c402e3c3c05dc123a366fc88b2774f2547dcc16a7af344bb4. 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/EGA252105688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28032266ed172366b107654e08c41e424cd12ee30f2530fd3c963915d9ea595a. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/EGA252105699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff28edfb3359d602c762c716194e61e5313b848b6651db1da7efd210ed8eb49. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/EGA252105691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a02419cbd5e9e69d19f949bce558df8d47449e1e9846e6480aa11fcaa430acc. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:32:12Z), 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/EGA252105698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077bf6e586825f552dff3c794c3afad7d4f5ec10395bf902f92c86ce06a1679d. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:41:32Z), 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/EGA252202182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf49d651654facbcbd4f2b76ba05ee97b8e4ad109412a06c429d0df4620c1b44. 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/GX4R52164542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a911d8dd00343a7e4598c816427e35c86b903db53991ed0a0729ab01765cf8. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:57Z), 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/EGA252105701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851cc549cadb9c5feec2d3be8d82ec4d342a017596a89c79b8d06198c6149288. 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/EGA252105696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc280920fb8e98055e8dfb11ebe86e91471d9fac645878f26cdfd054c859f9cdf. 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/QZES62040302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd435203b801fb9ac1a237e1e88f02bd86869bf8cc5e1161fcbedcec6db1608a3. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:26:35Z), 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/QZHN42034644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7ec1098d7a913337757498a58dff99cc71642b313fd90b89f13298ca309c2f. 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/QZDA72166049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7976db22eba1ac5c7b2fb25728ee805f1b858cc4fe99b1c7a75159bfbfb13e3f. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/EGA252105687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3f8e8d71e29d5b7619042b6ab6d9c61026802f9b9889683d8ce468da74bedb. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/EGA252106300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf1b675607828965e8b7331565b1cbc61eb160e90ac088f57f9f4fb282cea07. 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/EGA252203224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e48c6c973602e31e6d80579ddda19e539bd233c3c663c8e144f4bddda4d5b7. 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/EGA252209319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bae030d794106c8e3daa5d8e8eda8c50624cc64ae9b094efa33a99781ad3bcc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/EGA252300571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8cd59d41b20c79b0ecc5795d94a510eb387736a221c59fe94ff281285ca5f4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/EGA252309380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a206456f69990e414e8ed022b367419c93b8ea8dd02ac6df3c9cd2efa945a9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/EGA252310488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f29403674841534140bd14de2c8ca15209742379b052648b6ee4c366ddd6c12. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:11:06Z), 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/EGA252400690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7542e73d50c599ab8de6a12efde0bde32bd5795a71d943ab1929252669fd9f. 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/EGA252410439.