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 0xb2e8980d2ad70c24b442f33539971e242998c05c57242ab548a2a0bd19d4ad36. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e5064c67-c5a8-4ffd-859f-69bafabe1a8d.json and https://artists.proofprofile.net/proofs/artist/e5064c67-c5a8-4ffd-859f-69bafabe1a8d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bach: La Pasión según San Mateo, BWV 244 (Selección)
La Pasión según San Mateo, BWV 244: No. 3, Herzliebster Jesu
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 0xe5f69291d5e76fe9800301e3072164d81a3ec16572f7986ff8857f60f40fbdc4. 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/ES5338107977.
La Pasión según San Mateo, BWV 244: No. 5, Du lieber Heiland - No. 6, Buß und Reu
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1b8499c5925ac9f73390c3a57b61ef393c51529b1956b3d62390c0a12e2d03. 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/ES5338107978.
La Pasión según San Mateo, BWV 244: No. 8, Blute nur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562cbc056c5ab8ab2df9b769b38d06698b257071121f6d6fdf43258be814eea9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:36:15Z), 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/ES5338107979.
La Pasión según San Mateo, BWV 244: No. 19, O Schmerz - No. 20, Ich will bei meinem Jesu wachen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a93f4f63ceddb6be6e45df401618515251bd48c25f506a873bfd5788b18a6f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES5338107980.
La Pasión según San Mateo, BWV 244: No. 39, Erbarme dich, mein Gott
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf197a565cd1cd76b3e6327a58447bbb693292788ed5709998ac6a9ede2983910. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ES5338107981.
La Pasión según San Mateo, BWV 244: No. 48, Er hat uns allen wohlgetan - No. 49, Aus Liebe will mein Heiland sterben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d8511c8446d11cc197682a124a794a57e5504c88a163da6ec025f391ee0528. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:18:07Z), 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/ES5338107982.
La Pasión según San Mateo, BWV 244: No. 54, O Haupt voll Blut und Wunden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52693d01ee1404a38b6319eed64b0ad8132f43c6d51e1e5399a1b81234b50d57. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/ES5338107983.