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 0x3c27029d54b1b1b0113394709a530993308ca62c90834b70af00bd17929950ae. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e0b77acb-fb30-4cee-badf-d7ea5458eda7.json and https://artists.proofprofile.net/proofs/artist/e0b77acb-fb30-4cee-badf-d7ea5458eda7.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 0xf77807675a12aeeae3344fdbfefb090a93db2a20bf60ae395a1d9f8972a8bfe2. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:58:29Z), 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/PLC062544857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5895258445cd7ca4e3d845397fa05bfd9eb4213c7435158a3609a2a057a01e39. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:32:20Z), 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/PLC062544858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e0ba6085091f47cb5cd14bd32bdbdf67be376484d9272f248bd5e3e509a5a1. 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/PLC062544859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31abbe290eea71262de985c1c68ff0c83c2aa97afbcc02c44b07363a4a412081. 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/PLC062551402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028d0a900aa61c225888346c9bf4e7c787e8c5858cd2196f167e6dc3f17a020e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/PLC062551403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0206a0d10f16791ccb92124f14126c0aa251026074277e6181ba344d17a06b95. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/PLC062551404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0243e541f7ebd5d5d1d065dce1a62bbd3cf75b1d78fb98dba2820f42c2a2ec3. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/PLC062550398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4100f217dbfe975a97f53b162e205a3d6398eee972ee72c4ae7a04babc178015. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/PLC062550399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ae6734cc1a2edd2c36911b8b7523dad9a891cb91e651db0973f3eb2e894631. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/PLC062550400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e3fb3c20467e83f52de85e30e6d82d1bf2cda891555fd3dc24fbfa311ed085a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLC062550401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a9f055b458bb11e8db726260d281f748cf847f741e32dc36f3140f297ef555. 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/PLC062550402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa222f32122574f585d64f305247affc335271f9a322e451ddc490497c41054da. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:31:42Z), 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/PLC062550403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c64e91cb8f3ead411ae6f2c63a986076b5aea85772fa91dd4e7ad0fa649b6cf. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/PLC062550404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f165dbe7c227407f8afd2e2d030a492866a7a00b8b4ee0949e0ced0e56dac84. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:28:03Z), 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/PLC062550405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6507b5ecc4d496292fcf3f7729ac00fee5987da13cf4ce3f4a95afee8b824d39. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:39:31Z), 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/PLC062553790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474226a63af015d65bd9ffc1353f19becae8d4f2557871753d858b3dc34198fe. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/PLC062553791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3432e6a19281dbeb503e6794e421461a4d67f95ac039e4db071b1f78183f01. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:20:18Z), 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/PLC062553792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d6134d71ba86fd18c2521af380dd2a8f43206a68d29e340a8726986674dae4. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:07:28Z), 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/PLC062553793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3858c1e77d251a2348d82c9eba313480fbfe1be83739461d69b5b572bd1125. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:02:00Z), 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/PLC062553794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b66455b206c63a4ab81590dd2eece390621337890cbdd012e147c04ef78c0a9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PLC062553795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8720b41594dd47db80ff94cebbb2705901211511490216b94c9623e8add4481. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/PLC062553796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c5b19ea9f038a78111c7bd549059449358f3299b41951b520969bd89cb40f0. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/PL4K02501079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2160ce8cfc593cbafc6f8dc36cf8501aa7054445f00a27dec55ebbfb95ae26. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:53:22Z), 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/PL4K02501080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415ea3b0a4210af47b6535075015cdb5092a0eaf42eda7cd822710070292aad1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PL4K02501081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc570a15a7a7aeac22109e358ef2ea6ae8c0837710010dfb83b2670be271f8bb7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/PL4K02501082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514e23d047a3eb61b28152a05315cf3cc68fa432bf51538e169fa3678c2b77a4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/PL4K02501083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bebe99dc58a025225ef06418e42d562add864ef9f1b497add98cffeecc8671. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:20:06Z), 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/PL4K02501085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf2e1820823ebaaec49977112f2277ffea46de37fdd8d2c5715bd9980c0782f. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/PL4K02501345.
Niech nikt nad grobem mi nie płacze (concert)
Niech nikt nad grobem mi nie płacze - Concert
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fb2d0fc45bf1eef7e7cb9faee38e3f8623149fa931b566402230c3d3cf5fa3. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:47:06Z), 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/PL4K02502468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1648abdb6e9b293ea2a1ceaa4e665247addd654c89b7e7b023c65a5213d640. 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/PL4K02502859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98eb4a7b1d6ede9c746433e2c785f2cf8414c2e7b1c257e30f9a52794caa367. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/PL4K02506007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274db7c0a812438eb8af5a67c3fead3fa7c6e668d1756c6b175b983a9ba8d112. 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/PL4K02508203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7596b99b80de97d077ca6957ef444c0f64d4f19cfd9099849be50dfbd79e91. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/PL4K02508202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cb05da999405d05c6d9554e8583f31994ac2123e4a4a3fa9ae6539b8e21a22. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/PL4K02511551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ac5b3ef11c633d15a3f902c450c2dbc6b962c605e677b5b214f902877b48eb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/PL4K02513610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc659b1e57997ca7b4b3be25f49df8836b3596a2e35077c40ca4c4e8ae6576712. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PL4K02514756.