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 0x058d0398294dbbe3a99a65d9f835a2a9868ec0ff40c8b258251378fe3a5bdcca. 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/cff6d567-0f97-488b-9635-77681c830861.json and https://artists.proofprofile.net/proofs/artist/cff6d567-0f97-488b-9635-77681c830861.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 0x98bce33ab6fa2547b2c1572970de9af064491994f0f759ec3617ffc01d233a22. 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/PLD111500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8299089ed20ae9fe49aceb85bb3bd5a7b84e6b872f98a6c42148cba38d8c6e64. 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/PLD111500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d348e6a9309dc5a10a487c8ccc13c8aec0f0efd1c2c621b078dfdc92051f799. 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/PLD111500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890196d95156c28bdb02ddf30adac5c02cdb7176f61ae027900e832e663fd5ab. 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/PLD111500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c1e28851ed4a7d87f2aceeae80eb273603f7c0612caf49aa970289c9e463b0d. 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/PLD111500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a2a6b1d1f6363c4695cab4fa8eea6ec473088041b4d5e305b131a06ef5f1f4. 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/PLD111500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0510e052ef11031afa571d41b19f33a6cb427d89b34c62342263256ed20df479. 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/PLD111500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c2330f0982ed0e19ec73d15ba57177e4499094af47902c18af19d1f53be9c2. 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/PLD111500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255c805e096662fd1217d17f45587e8fe2d67fdc5545270c15be2f491e00a33c. 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/PLI369293750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8f32d1a07f149948b9349056d6506d0344cebb62284c7f1acb86226d0cf8a8. 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/PLI369293760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d30fd8b23d8ea83afbd7644b4430f644f393bd14b3e5d218e65dd2245df789. 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/PLD111800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bcaf1340064db82460ff809c5927ebdec8fd3e6c0b243df29d9fad58851456. 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/PLD111800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab11de33872f1ff263a2e1ee363170e21549d13a671a999c74f1539b94671f19. 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/PLD111800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a2d0b48b42eb25f41f02874f1736f3713091af87a9e3436a69918c49e18162. 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/PLD111800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9064c4ef27d2e5ce1039dbcf137181ec267d506dc37609ccb811813384e03d48. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLD111700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67c6cb085c75778cdcc6d85ea245e29ac9ed7053c891e2a1ade77a0c603c810. 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/PLD111800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f97c47e6da10c880812596c0270f05c7204075903fe445e434365ecf1edcfe7. 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/PLD111800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91263f46ed1d3d8a31e5e13c605358c11f8e632b5e92de3bf4ce1294b527b55a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLD111700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92eb453f8d54cec0918da0b3915c562384a4e4f82bc84b7faca1ccd2c195054. 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/PLD111800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdced0b2e2add49277d9440249b78738cd091afd6f12a6b4ebbdc4fd0c8067197. 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/PLD111800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdc5a1a12375b31a2e90b18d0d9c7280613693a9da7fd685b65711edc664c5c. 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/PLD111800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7880c2b9d1c8ca73b2b64a574cfd6d4706901cd118859eafca255c033b6b27. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLD111800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0a442dc7d653f081560137a64cab1b6e7385be3faa6b1b0ed909a9f6c820fe. 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/PLD111900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3d06d1299244696fe34dbed2d55bbe720b95f92cc01681dcc015f2b19764032. 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/PLD111900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca5043c435fe1096f2422bc7248a98595e37de01a5b51b4979a4819b124f193. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLD112000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96aa5163c7b501a6fe12d3f87ff0b29ee4d4133886033777f031fa533cdb0635. 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/PLD112000005.
Wiedziałem, że tak będzie - Lech Music 2020
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42cc5d3502c2d81609a221f54fedbe635ddbb3a761e559ceee16d7928e2e586. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLD112000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91263f46ed1d3d8a31e5e13c605358c11f8e632b5e92de3bf4ce1294b527b55a. 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/PLD111700024.