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 0x3115e2bc6321bc7c55f7b7a47033252ed9b450c2c808ad79a6c764867c544908. 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/b024d0a2-59e6-4595-a0a6-b01077be247d.json and https://artists.proofprofile.net/proofs/artist/b024d0a2-59e6-4595-a0a6-b01077be247d.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 0x71a128c12fbcea08c2740aad17f0553d8a1169773e39681f1baea56312a7354d. 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/DELV42400858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c9063564609020beb8493c7728725ab77bb72a55dbcb20062eef146f69f38f. 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/DELV42400859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5921466240c1f049abad69f05a78c790e70332a3d8c2af0989d5d20b971f188f. 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/DELV42400860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c0c059fdcafe60fff691f00fa66a6d520f1177b2a9cece5a5757d40de6fd57. 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/DELV42400861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe216223f625881d46f9caee3c2ac81398fc077cef33582a181ffef453887484b. 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/DELV42400862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1a43922bd3f76ed576da5a4569a17b38c5632410f1bce3155dbd4a2a3803f8. 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/DELV42400863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6666fb18b6c3d33d3ec2788ff0915c710c2973ff407a51d1bff6810e320da131. 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/DELV42400864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c51917ede1abf7037d77ea784f8dccda0bbce0e963801b2e97dc3bcce43f96. 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/DELV42400865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e366214dab858ff57c89b455e35f57ceae5fd76595fce88e04f41dfed9868b. 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/DELV42400866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2fd5c39a3df5c98678fe08bade15c97247efbd065a88f796976e2de21b79e4. 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/DELV42400867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd54a9afb901e0baa928301fb4188c67b2d8953c6b04927cfcea15a3e93ade08. 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/DELV42400868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43eeea4be8a565b28d3fa35ba88e814d8d1e9235a5e75a330797cc9222a26737. 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/DELV42400869.
Ein Zug fährt durch die Nacht (500 Miles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad59732447f78c04e107dc36650cb56284252e519353f60facbb3154bc2550f5. 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/DELV42300882.
Der Condor zieht (El Condor Pasa) - Jojo Remix
Der Condor zieht (El Condor Pasa) [Jojo Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f7b47daeb21086af4dafd74ba833dfaf86e6cd47b2ee452f9bd537554fc834. 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/DEQS92200512.
Raum des Schweigens (The Sound Of Silence)
Raum des Schweigens (The Sound of Silence)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367ac5a066e036e0d7acffb322cb0171b708c30ffc3a4128cd15424276550549. 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/DEQS92101152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1005eae57a1b31df64054d2119489ef28320319f146a2c6f50bdd70a80f545. 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/DEQS92101478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a837605f2c97f9fcfb4e64f9d982413e17d0e1fbd83614ca534ac070ce9b05a. 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/DEQS92101141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26dfe85f618402e37e3927cdd8e2ba2887ec899eca2a056ce97b206b44798e24. 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/DEQS92101142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf539b7eb147293eef369b880df31bba55205a39b48e50bd668c702957142b726. 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/DEQS92101143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f7eda061cd6f0177931e337505a0827a92b5fcf1716eae03887d292c5e5f56. 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/DEQS92101144.
Geh mit mir durch den Regenbogen (Bridge Over Troubled Water)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514215b46c4d89b81d4717d29675d778835c053aad1b9b22e3c95ecd494c400f. 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/DEQS92101145.
Du sollst die Tränen niemals sehn (Crying In The Rain)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4cd3a19528db5bcb026ef6a8addc6343754cfc169f4ed4683a6e73540b60e0. 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/DEQS92101146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766b6ac631a54dadb1acaba1230bce288a250c1e0af7ea9db547661ebc39bf3f. 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/DEQS92101147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7666cf248cf8518b890f5537235135b0bded1bb49211f1ac8749c2c7c1d55fa0. 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/DEQS92101148.
Schön ist der Morgen (Morning Has Broken)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876ba55a61b478166010e0d0a692975013e8589496f59f4ee9a49966bf451836. 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/DEQS92101149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17688f038ec9eb7c4069141cc355422a3c0a1eb24a2da6e37209f4e34e61811. 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/DEQS92101150.
Ich leb allein auf einer Insel (I Am A Rock)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb9d70fd1f65e28512317606cef5378dcec15ca6314fd023ce2a5504d67829a. 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/DEQS92101151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367ac5a066e036e0d7acffb322cb0171b708c30ffc3a4128cd15424276550549. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEQS92101152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d662af0bc53ec2575845820d5f1d6d96116540281f2b0870772a7e0dc416532. 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/DELV42300876.
Mich stört kein Regen und kein Wind (Raindrops Keep Falling On My Head)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92fd7ca147393ba70622ed6d038152b008bcd7fd9b21d5c9581ccab2274745c. 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/DELV42300877.
Wunderbar ist die Welt (What A Wonderful World)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd04580a2a3cb9416014e0b657326927ec9524e6b4af6d2deeaa5f05579f4f269. 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/DELV42300878.
Seit Ewigkeiten (Turn! Turn! Turn! To Everything There Is A Season)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16b673afdcca2f42e95d4faccdc7ae978158133c526e49e339cfccd11330d88. 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/DELV42300879.