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 0xbe4c40c1989b7314007797fc49d7c0014c8485ebf00e74b8f8f6460fc6038a8e. 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/cc4c0a01-ff0b-4d13-a05d-7a5820f0fd0b.json and https://artists.proofprofile.net/proofs/artist/cc4c0a01-ff0b-4d13-a05d-7a5820f0fd0b.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 0x20f00c35a626f7af725d39459513391d889ce3bf7d7a674a85b02bf2cb0f9d7e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PLUM72000463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf7ba2d84018d1c2fc65662aae3c7cf6bec0b3e4f5f9416e5d5e9e835e9a6ec. 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/PLUM72000327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e7da70e14dcd8b66c931a2c9b9797b6fc9154a42fdd08ba77e32b3810df5e8. 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/PLUM72000464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7062f13a785b422b11c51ffce7b2a0f7d315185a1703fe243e3773f6dc00746c. 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/PLUM72000465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2528a283147c2b4ba7fa4162f3bc8023d8d7be3dbc3e56300e72d1dd56f7978c. 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/PLUM72000466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b0a3097c05a89baddf892bdebde44ea5e693e93037721f30b45be52f4dade0. 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/PLUM72000467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f72f97f65ea3b7ff8a678dd9336d72ff400b3c388b204279c42fb5aa7ae210. 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/PLUM72000468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef40cc2bccff04ecfedcf599e0292693003c05778529c0c762b6ca4964a1432. 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/PLUM72000469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x259eb04ad059cc147c3f23d65b14f3d6af7588da16825d47a53d9778b69ec9e9. 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/PLUM72000470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c29da0b3e734f3335913138a7a369d015d45e65e801e8848673562defbf84f. 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/PLUM72000471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f8884de4a6069022ca24f2a06776e3c7bfe0095c3b7c2153459cd0a7a92bd3. 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/PLUM72000383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e89eea8b6c8b96b6393f605b80bc29a9fcdbaa30715c515a9e334e91a292913. 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/PLUM71900669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308ed2bd4beec26de53a30653363a7170571845ecb699c1cf8881a089ac4f216. 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/PLI361274220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb967da778bb335c78cc7427e698a0dd0a1015343ce23279c696a11ab9fc493a8. 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/PLC061100846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47468f50b6c5615c1bb4abf970dd5dc10d0c40bb1c8558f792fd2bbd5c523957. 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/PLC071505013.
JEEEBAĆ ŁAKÓW REMIX (feat. Otsochodzi, Te-Tris, Włodi, Tymek, Wac Toja, Teabe, Mosad, Fokus, Abel, JNR, Dwa Sławy & Gedz)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6776218b8ac2a1f518b79ed8135f56da547df0d876b47855ab09834465b8b2f3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PLH341300511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e886beff2f8d40b96e8574cd93b558b7bdcaced063530e1a730b9c38a3a961b. 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/PLL371400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d1351b1e307b010d7e251c8a064b3ccb99fc2d0b9e736e3b5f1b77fa5a4440. 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/PLL371400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c8860286e12f0b0c3436cb3c7e37e775129b3a7dfa48b1ffe66fdcedafe851. 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/PLH492249282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93097507381949a159c8e4a7747b9ccd173922fd3eeb5704755fcd3993f876fd. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/PLC061807398.
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