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 0xccf9beeb6b102d5c9a5a57f3b160eb27a57b15c6b3494219078d4adbf6297d26. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ce4070a6-6e87-40e8-9d3b-a69310e571e8.json and https://artists.proofprofile.net/proofs/artist/ce4070a6-6e87-40e8-9d3b-a69310e571e8.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 0x47ff240e98692cbf74d6c072e877d74f3f14d14d9fc8fb5d12f7dbddeaaa8eab. 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/PLUM71100605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a05d03db8e1c7a863e1a4551bcac7fc0d0e0366982e5ec2f44f6f2a85c6642. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:15:56Z), 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/PLUM71100598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5d18bebad4475eb98e44dc2287795776b938887ea6cab7adeac890dde6204c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PLO891500001.
Szukaj mnie (Piosenka z filmu Miszmasz, czyli Kogel Mogel 3)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2987c67c528597082a428b6941bd5cccf27af12d5ee4c6cd3acd24a6b20213cb. 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/PLC591800340.
Iść w stronę słońca - Tribute to 2 plus 1 (Męskie Granie 2019)
Iść w stronę słońca - Tribute to 2 plus 1 - Męskie Granie 2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b9c34576aa675ff0593237497ab9c122c1651c0e1c2ffaa46c8b78323ca9e6. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/PLO891900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09029d1f3e1ccee93deed19ca4d5415ca7cdbf87e8089d843d8a88775f1df9c1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/PLC591900194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4632cec8666aa3488f1163ea4426766b221b47d001cdcd26c2c447856285f87. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PLC591900197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69dfeec3733f4375c8f084aefef25c06ef6d8cb7d47cf5b9021cecb53d3f800. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/PLC591900206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f80c6dac1c247aaf0e8648ddbfcd2a93af6c727352cd48184bde455190a5d19. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/PLO892000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416311f379b6775b27f1f29781c29d201ff3a9b4c7a3efda2142cb4907e597cb. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/PLO892100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ba1fa7a6debe60f679007fceacee365335939da3389cd5f195aba7686d4d98. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PLO892300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9379bc5e2ae6cfbcba36ba2a4f58951a1cdadac862aa5c9007a5b245aa00893c. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:22:20Z), 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/PLO892300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7335302eb5a4cef9734063206270d346f07a2906a68195d249d292f4fc538bd1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PL0892400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x852c1c67e93561f39fc860341fb2c7dbea7d16b55772a78b412d25ccaa5c0250. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/PLO892400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aeeb98928cb798b8aedd562b4c372227d3e303b7d75c5d18d99a375f240a8d4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/PLO892400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47473169be3b08a161d82e2c187c66dd0a9320e46a93a845d7643ce5f96a88ed. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:44:25Z), 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/PLO892400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcf141c02fffbc2f99ef94f32d5f1ffab2b1e7af2d9adabaccc767fa893e5ea. 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/PLO892300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd864d692ea5363d4b2f7c0f647b8a1fb59cc0969fee038470c04d359428c7af7. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:09:40Z), 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/PLO892400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e0ac5806b9e2d20b6e6b32d124c792ef7853f9553068d03afcadb27a40b47a. 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/PLC281200014.
Iść W Stronę Słońca - Live, Tribute To 2+1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e6f893a62bcda9e6dc12d6c6e10ee61109623da765d2b00d2e014005421868. 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/PLA392030406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223bea0e466ef05893a22d5b27267449f15e9dc9bab347a4c00e7c9c9dc39f7b. 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/PLI363176110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29d34bbc49b24753e59caa935161b636ce4b4657b6706502e7f23f7697f7fc6. 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/PLA391929201.
Piosenki z filmu Szkoła uwodzenia Czesława M.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e98f6f2e9a832d00d89c73990676b543014f5838e58f427956ddc19849abbcb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PLC591600120.
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 0xf88a99f5d86a8f1a6b35ba8264ec7af135e34431507ed847d38a3663826413eb. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/PLC591600131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1e69088e01342459ed3c3bc1110bbe18d77683a840c33511a7f5cd37ed15e5. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/PLC592000111.