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 0x67a3dd6d2301ac858f0ff2065a5052d6ba4cba3e6dbb86e5d4d13dcf921c55d3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1dddcd2b-0cd1-45fc-98db-2c84f0e2c362.json and https://artists.proofprofile.net/proofs/artist/1dddcd2b-0cd1-45fc-98db-2c84f0e2c362.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 0x7e8afba2a5bd978ef0845878ae8958601102df7e1608f10fe3d056c9b9fe7860. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:20Z), 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/PLA811700070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d9ca1707c9e526beb98e42b05435a9f65c05b10dca755f2396a37c0f3fea52. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/PLA811700072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76032e869f6c73b6c42523fc7429569838d70a03bf46a6aee5561c9511dba2b7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/PLA811700074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91afe5c8757dce66aba398eec9b87158e6fef037e3e98ec828765c99c234b79. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/PLA811700077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad7ab69673442b30628ce2a2f7a675dff0cd5a638cb2180cb06ff7255e29d6a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:51:04Z), 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/PLA811700078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3350f11fdbae27dc307453bf1feb9512b25b50311efd8385709c98e533e7e25. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PLA811700079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61769e83e8bee1696302c1f853f4c6092cb43dbf24200661a88a46bb21d72ce4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/PLA811800092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6078e7720c97536cf5286e552888d0f37954818599f46be403a7f0391a10b0f0. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:53:25Z), 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/PLA811900291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80ab891ab88ca3b5d6d83262b18ab4a8cd1e539cf94bb6589e7a4b501f3ade3. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/PLA811900294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73868466d3dcfba289d78505aa01b690bba1527b1c68b1930eeb3e949b20c767. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/PLA811900297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecff9f17da56e528e4e0ea2787eb8c40a56b2acc626914114d19b1ccf8a043ce. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/PLA811900298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde72138ab1f10aa861e2b284e1ac70b41ea2346ab2402782e080346dbfc9120e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:29:58Z), 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/PLA811900299.
Trapowe Opowiadanie (fragment audiobooka "Jestem Marysia i chyba się zabiję dzisiaj")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011adcc7b45c0269b1a1583146cfe6ebd01d0d47233d3c6ad876b1b0e4423900. 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/PLA812100128.
Jestem Marysia i chyba się zabiję dzisiaj
Jestem Marysia i chyba się zabiję dzisiaj (fragment audiobooka "Jestem Marysia i chyba się zabiję dzisiaj")
Dupa Lipa (fragment audiobooka "Jestem Marysia i chyba się zabiję dzisiaj")
Nie Umiem Mówić Nie (fragment audiobooka "Jestem Marysia i chyba się zabiję dzisiaj")
Tata (fragment audiobooka "Jestem Marysia i chyba się zabiję dzisiaj")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88fbd371785fe2f7f172a57fa28826501f8a0bbda0428d99c6509d34b40cb55. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PLA812100131.
Brzuch (fragment audiobooka "Jestem Marysia i chyba się zabiję dzisiaj")
Najsmutniejsza Dziewczyna Roku (fragment audiobooka "Jestem Marysia i chyba się zabiję dzisiaj")
Kuźnica Welcome To (fragment audiobooka "Jestem Marysia i chyba się zabiję dzisiaj")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69bbd990f8dd77fd14b7de4d24d04aef59c4605189474e08765ad9fbc8671e0. 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/PLA812100134.
Prośba Do Następczyni (fragment audiobooka "Jestem Marysia i chyba się zabiję dzisiaj")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a69e1efc822ca203d98fa3dae3aa6eb9b017004489f03e826a1c0927365e30c. 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/PLA812100135.
PAPA (fragment audiobooka "Jestem Marysia i chyba się zabiję dzisiaj")
Cekinowa Bomba (fragment audiobooka "Jestem Marysia i chyba się zabiję dzisiaj")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa05f0c1274bf2c4a089cce2db69c233ccd3e170ff17b53b785719d0dd16df2. 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/PLA812200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23cfc09893d2e17c151d33e2c92f30821c6be7b7175db00108e8ec2728797a45. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/PLA812200074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402ebffc48437a8eb75b58bc6f0c89d4f238ff43cda93204b2c9fbe5027e59ea. 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/PLA812300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ccd56224101096ffedb08784bf426fa388d4933c52553ce4507e12747d1675. 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/PLA812510047.
Przegląd Piosenki Aktorskiej we Wrocławiu
Laureaci Przeglądu Piosenki Aktorskiej we Wrocławiu 1976-2019 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25dfc9770ef3bf1445668e68dd2423bc6fb48c1e7c9e3e25aef150f97d810da. 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/PLA291900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c977ebeae2aaa3b33d438967f4e6b5fe856f0bcb6642f2ea2a9dc9d4d38951. 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/PL70D1900162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43591da502bfb35b42976c7f377c212bf8c7aead0b239e2fc6b35713787f3aed. 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/PLH441600118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3d43abe01a7dd7e71668b03b38db500d2618dbeb34265baf44194ea0a0c202. 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/PL2DY2301206.