1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x56876860a189951ce00fc58dd4e511856be41c643d1e484ff717fff99e768fdd. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11982f76-aa74-4f23-8d69-18959e1e0983.json and https://artists.proofprofile.net/proofs/artist/11982f76-aa74-4f23-8d69-18959e1e0983.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 → block OTSBitcoinBlock must exist at that height 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 0xccc27ff50921e58daf8fe1dd9c5360e77d32a79892f4e2e09266ca623fda17d2. 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/PLF242108433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbaeec21aa287977d89bd3234cc6fa161e9ddfe84b91d3937f648f0309c4446. 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/PLF242108300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a830cca5adcb77256b28003684c4b7ecb347fa03ac16c86e15e112440933be. 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/PLF242108509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881f13b15d780d47dfe3a7ee554bef0a0d6ae169848c0f9a999e159d56b81d7c. 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/PLF242108510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b861b1318bfc2bc2a5b7c4c003f5cfed6d50c163c60bb13e0543375e583cf8. 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/PLF242108511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac31a44fa0253dcb3edaeada00f74887059a2196bb1f90bebe1363c8cecec7c3. 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/PLF242108512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57a5436f345a4d38b4f6a4731bc7ccf7574a3548d49e86dbcb9c6794af65e707. 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/PLF242108513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e87cbbbb597f821af5df18f5f08d9d2bf4fe5341d22446e3d15d9d062f5c55. 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/PLF242108430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bce5bdb22aa33900e47690599b4c7d157c454a6044cc37e06f9453c47553c53. 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/PLF242108514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e1f7dc575f85de1b356b4c52079f2dca24abead49a6708fa95fc660eccb526. 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/PLF242108408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925cd0dd8ec68d7067310d76c4b8382b08f13887a84a141c35d2ea8284a8fca5. 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/PLF242210712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3811a3265b0b8d66d524df8f9d21f7ec55471a98ce45efaf83f429263bbb6e5b. 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/PLF242210507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1368678021774954fdf45dff1ea6f95ea3d72ea117e1f8fa4b14a97c7a85b84. 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/PLF242210505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d8149c98a43392ca50de61eee5bf69233f63e75fd99729669e2d4d615d3b83. 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/PLF242209817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdb5710bbebdef52f182aff14472ba6e93dc01495af2d2861bb9e1899e1c412. 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/PLF242208996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d641b1e9701f8cd8e72cf1b1552b1025814cf69964352e9bacbef3cf1518d2c. 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/PLR902200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8cdb3e0c98d5a20534ce28ba5ff26b0331aefc84ba6709f89c3f36de0c4cc7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/PLR902200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f13c481b1e8e839e5077054286b1492880b1c83230e53475552e171c1e3459. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLR902200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf307c4149bde7b32618cc68178bab6be423c49b57c5a7b4733e3b5f3dbc0f641. 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/PLR902200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987e0651597e960d359555fedb3846f0c85ff58b9662807b0b279e4d2daa9cc3. 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/PLR902200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7a15b2054412dd0ec9b84391cb2c2be3338b2ee1f3c5dc1c9266728cfd1a5c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLR902200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb763bf4ace27e95878148a3c694d5ff0e7fef947fe450086d2d501fd8698a302. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLR902200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0c8472909f6e3c3a6d58a68bcee4e6cf622fa5367419db68f28815ea1b3416. 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/PLR902200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2923aa837453f99ccd9f052f59174f231c430bf3938b9960bb800e67471f0fb3. 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/PLR902200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f47f8c6254d640db61df10a1bbeb99903cb3ad47b47318ad8689cd0538ffd46. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLF241705430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6664528a2e3429713e8ca64c685b629667d6bdbed3603c492d316a4c1d7b4bc0. 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/PLF241704673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fb650d933c9ddbb17a98c451ecd5b4289cac2d4d88a97f5a847e38b3414a30. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/PLF241705432.
Każdy z nas (feat. Kaczor BRS, Kobik, Kazior)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7379ff21bd5fe01bff330f4d65920133b9b5f07f7f30f4182645c0d4b1d55db. 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/PLF241705405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4265e09fd3cba9051e7aeb3cd3a2c8cbd4c8b88b7392a914af049e27eca0166f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/PLF241705433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc82eacab561b712e977c0fa5ccd108c6b980958dfe4e899d5b9359885eac97. 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/PLF241705435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e982b51027b98cd465581cc45f6a56d452ba565aebb505307d71eb9a8dfa120. 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/PLF241705436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208ec38325bb34d41a7d258907dcae7f4b9583961a598276ea05eb4e69e3154d. 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/PLF241705129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b707716a4ceec17d774cd22101a9096b740863b5c711566776fc04b6c4fa8b7. 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/PLF242210385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d150f4c9ed338cb402b3cafc77a6ad2a9051e6f2ffe33eb1469b97c4686eccd. 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/PLR902400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d150f4c9ed338cb402b3cafc77a6ad2a9051e6f2ffe33eb1469b97c4686eccd. 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/PLR902400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d46f68f209a325a3e1040584f4a697203b4d423a5282933158b1003629cc0a. 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/PLF242211703.