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 0x3c2bdf99f40eee91cd2c01ae4a8de7337a76ce660391e04bc07b1b7e5c415d5c. 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/6c2d7119-8e54-4a65-89ef-42f4c8d644ab.json and https://artists.proofprofile.net/proofs/artist/6c2d7119-8e54-4a65-89ef-42f4c8d644ab.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 0xed9e99baff5c7301bb1c8c68aca6821ea8d998250b331d2e9e94f7461f7462f2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCADP1818450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8bf0ee4cedf4a5ef891c7e2dbeb6955eb7e3f3e3c7e45ab193cdb8d26c2f19. 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/TCADP1818456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8b5d5432ddadbc4a4d78b408c4fe6db127fec48be736d84e9845cac43f2af7. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCADP1818458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2196b41efb858b1525bbb6f192c5f4a96d3f16b7bfa7ad762ac1bb2cb594364b. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/TCADP1818462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd420083a90d7710dcea815f6fa8bfd9e2131b9e3e876fa08604aa1098329c254. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/TCADP1818463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f31ca41376ea325ce06aff8aa76a8c8971e27488bcef1a364034fe6f408b459. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/TCADP1818466.
Υπομένων υπέμεινα τον Κύριον… Εκλογή 1η, ηχ. βαρύς
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71cf30d51a7476ad5bee72736a5f2869b8d2b1ade85b7339c8edaab00af668d7. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:10:04Z), 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/TCADP1818468.
Ον τρόπον επιποθεί η έλαφος… Εκλογή 1η, ηχ. πλ. δ΄
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10e72f8a804e696584a43c6a2200cde7dfaaa0110aa72a521bf71b58b6b4989c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCADP1818471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454088cdd1d7128a6b8753bf68afdc1532330c7643c81b3d5fa8b7477d14e0b9. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:05:16Z), 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/TCADP1818474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f822c3ff222773c191ed7370900f151c42e75d47473bf37098e18c856dc550. 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/TCADP1818476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46bd20de28c315143e6f6d1fefcd91ec03a89bbca358069922cf7d4b145fdfa. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCADP1818482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27da3628908954d008da8f8a22d5dc21d4ac2a33c969545cf44eb4f5f9d8485e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:14:47Z), 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/TCADP1818484.
Ανοιξαντάρια, ηχ. βαρύς εναρμόνιος εκ του Ζω
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f704c9af41e23cdb4e0a95d87c5f0c77f75a01934fd3524fcc00ea52ae42d36. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:47:53Z), 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/TCADT1882974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152eb4a80832a0386cce335031ef0dd281216b3137084e0ff41add135448f68a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCADT1882977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2356fe7c9b5ee53c1819c9cb1952f13827b83988c385b807b11562caab2ef03. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCADT1882985.
Έλαιον αγαλλιάσεως παρά τους μετόχους σου…
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe5cad7b6ebb83be4b937dcb40dcb462a00f8dbe8da748fc876afb3cac68dbf. 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/TCADT1882986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c5cabf34151571c7cdd705ef7730164308c2d535c607474f8ec038ca0437d4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCADT1882989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764f5249a19ea53510fe1da9eb0d5089779af051984e4682d81598f554c372da. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCADT1882991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ec3dceee39f3d9b260404707f6fc9f5000ab57431b1b7196b8deca432a5ffa. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:57:31Z), 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/TCADT1882992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455e9c8812c23f2cfb2ff9a6e729148488aad8a49ee7c3a5d9350bf771635d55. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:57:20Z), 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/TCADT1883002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13ddc300dd4b82a5e7e4b1a7cf5631a4d33af304874576f5fd2acd20ba4c544. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:09:05Z), 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/TCADT1883009.