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 0x75bc7b222eadc5b8ae83151b0d178d72be2660037bfc4a7f1a470074ca6bac24. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19aa0c55-f7de-408b-9ec0-ba97228d86b8.json and https://artists.proofprofile.net/proofs/artist/19aa0c55-f7de-408b-9ec0-ba97228d86b8.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 0xddfca02a1dedcffb62374109c7e53a218a59bf5dba9666ea9d99bf3613172b9b. 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/GBEKZ0500126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837871a88fa587dddf1b6bab1fd2f3a476043b5ff85b4142ccb4d876553c2289. 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/GBEKZ0500143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6d918b07fda00a8c1797e9abebe2514182b9b4e61153a7b420a5e841531b37. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBEKZ0500128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6ec3ff74e604fe358966d0e98f3289ab35f1bcf1548bcc4688ceb9bae0cd76. 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/GBEKZ0500131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38768e790546127458d24e473fa5688a596a99319d0a4a4739b9db136c61f7ae. 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/GBEKZ0500132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a8f8f08bd9ac358dcea08813bc3a2730afcf6e863b7d62cba52422f901c103e. 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/GBEKZ0500133.
The Lord is My Shepherd (Psalm 23) - Theme from the Vicar of Dibley
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c26d72fd3239925ecba081cd847bd83376e75afebd3704f355e82429958c78. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBEKZ0500136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6585da48741e324388bfbae0553cab920ca069e838cb5623dcf7790074a3b9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBEKZ0500137.
Corpus Christi Carol (from A Boy Was Born)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8e12662e7dff814105355c52cb728909351a35b9c93f4feddd4b7d48d6a30e. 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/GBEKZ0500138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc825b0cdeed204736e38ae58de059c545e83f4907dbfeb83a77e48bf8a645fdc. 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/GBEKZ0500141.
Walking in the Air (Theme from 'The Snowman')
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x377785014bfa23326401e65db86e9c1ec6e83aab2c20a9ebc2f2e24edc4e8b6a. 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/GBEKZ0500130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e5dcc03bc8c745926db575327f479370f4ac8a8d71ed4644422c09554e9ad5. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:05:40Z), 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/GBUM70705965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f207d313b447a316dc53644d090463b2c1f16116bce7f18fe1ef370128589e6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBUM70705961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e771edb2acd53f36f546689b432a03955241e5f0c0c54c962ed73cc3f47ddc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBUM70705958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268e30044246e7632cdfb3e9ab62765e321e61e88f576c932eec0c4c4f7b8d2b. 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/GBUM70705960.