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 0xd6322440a4feaaa6557e7884952a7d14b704841775a0dc77480f46e25927493e. 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/f60ac2cf-9050-48f8-8a30-f9bd7c471516.json and https://artists.proofprofile.net/proofs/artist/f60ac2cf-9050-48f8-8a30-f9bd7c471516.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 0xd5aeb4647f8dd78a83c1aeae31e9c39b4d6f66c856640ceedf0be36f7b928eff. 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/PLF242108230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088e9331468cb0febf5f5dbcafa6bd79f9b33bc47fee6cdcd66def42c4684819. 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/PLF242108232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6162727713496836b1677dc6b81e71e01fb0a3b561376c58eaabff587c758530. 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/PLF242108233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecb6bd61abaafed7e5100bdb82781a7a23d08d67e076d728703acb7bfcb5e28. 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/PLF242108234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf366b209fd2b06ef91ded3c7eb4cb719b6bce5093634b1fce0799434b2049ea9. 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/PLF242108235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b7fe1d58a0b7e927d5f6c0acef5b97239edce20a202693be51fc174c7d8218. 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/PLF242108236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab47c69f1413f8de450032379415272421918c17499c0e1961d64e7fcc1b9fd. 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/PLF242108237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18448d9b37129c960aae5bd94b38e28ed4e2c635785c4cba3af87b08502580f6. 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/PLF242108238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cea34d68706e1f9a0d15a684d96b9c34decdfecb761a0ca5adee3aaa897f995. 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/PLF242108239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df3cf7d00676ac814406714b2cd5cbd8c120775cf91e03947ec16c981e0b34f. 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/PLF242108240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9c2994f12f545b551f08f755c6c35629f138a97a2087890a544f9575c3527d. 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/PLF242108241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2005bfb79ff2312bb8abea7647013c09f171930a1a61041035f550b20707a8ba. 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/PLF242108242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7745ed75ad388a3db55752a740ba1cc88b599cd4ed338561fd364793715dbb. 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/PLF242108243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093da4bfcae45118eac89200caffe140dda6e56bfb68cfa6b3833cd2ddbbf6a7. 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/PLF242108244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11d4086004cff93881bc5e9f9b1a935ceb7da7b81b99518b87ed11961ba407d. 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/PLF242108245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb70e5cc8d39cd0d234a77ff16abc036aa6987fb950c27794f42b750137bc3a. 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/PLF242108246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aea36812b4cab6c7af0648fd7f843733b054f374afa10ca550fef863accf66f. 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/PLF241704764.
Serca (feat. Emzer, Marcinek 3Z, Kobik, DJ Gondek)
Tak to widzę (feat. Konspiracja Osiedlowa, Damian WSM)
Siema (feat. Grzybek LD, Peja, DJ Gondek)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefa89b698c9c3dafe6d48dcafe83145486ced4ccbd983b8917fba22219d8dc3. 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/PLI362894160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8af79e55a890eb85971bb621b4f857e8b97c35bc915d32f2831cdb56703bfb0. 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/PLI362894230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c68ee55a7371e012ac0534ea7a86f80a080356281eed6049ef49ed181b7367c. 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/PLI362894270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246793fde2097cb7fe3f8aa23d36a666ad6f33dad28e133f87ccabe0d940f042. 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/PLI362894280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed16b23b8692087868ac58d11b32de27f3acf795d0e2616776c1fc9bc6fa0319. 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/PLU941700013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18dbace19aff2ad3d37d1c52b428b55f5e28b44ea3241b865ad5ea7372a12c7. 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/PLT611820008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad973cdb0f4d3c92d74b425bec923bc79e53d8af49f56fcd9b137e2788203656. 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/QMFMF2224853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a3120e47164f650b99893d8cbc8155c4774f1c7c3b70d03d02bd090efca69a. 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/PLF241704600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344a3887a8836526beab08af4d2b05eab0ba66d74ca148b60ec0aef63de6c704. 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/PLF241603518.