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 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 0xa6d7ae7dd56ca0d9d9679bc9fe18ce4fc56812528d0f30f0cea37e85eb9a0718. 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/afa683a4-fb2a-46df-8ec0-385c0fb55457.json and https://artists.proofprofile.net/proofs/artist/afa683a4-fb2a-46df-8ec0-385c0fb55457.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Piosenki Dla Dziecka Do Snu Baby Ballerina
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 0x3362f92037686109c040b602e64646ae8c8840c01370f643c6c8e89efb78cf17. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/NLGM11809075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a22672a086cdd992df82de061267a3d0ce232a14ed4be03726eb4b2c165bba. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/NLGM11809215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b838e16feef919099261bafcba71f823ea16ba8526ea5975c00ec6a536c41d2. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/NLGM11809216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143c1d0879edbd3e31e50d382636fa80bb80e4762cd091709f87cbb43af4d1da. 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/NLGM11813241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef35675cb1af855fd37cf1c8440d88eeaad06bb94eef8352eb7dcb298e1116a. 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/NLGM11813242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fdf89dbe8d5f1312d54ca2c1616ac884e75dc10ecaa0534fb55c6cd9a26343. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLGM11813243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7638e7d10999881905d3ef55be3050a3892c1577a18fcea2f0ded90b941383cd. 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/NLGM11813244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4508e76d5f5453fb6e3284f41e8de9ca080d7d86c10fa63bbc28a45e334cdd. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NLGM11813245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07d3d86627cb6be2201cf25988cb438f82d35f3e690c9520f8a389b362a60d5. 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/NLGM11813246.
Najpiękniejszych Polskich Kołysanek Dla Dzieci
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f4b2069c9b2825d8f8e0dd8e2b26ea42624f617c7bc61f2a15e75d129bad05. 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/NLGM11903620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13864c2b497082cffc02b9b8cd8c08ef04ce5a65b8e455736a71d98988bc8969. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/NLGM11903623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5685042ad39d797349395f4a286e95975b24bf1807f1e356e66c6a068fcec41. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLGM11903621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8169b43672ffb53330dea7bb3145a4ad8573fe3fa7109159067110c7c2f65c92. 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/NLGM11909990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe391e3ff3f8725a3cc8c14095327774c2d071bcbe81eace4d64a37a1873d4b69. 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/NLGM11924700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbf4a3432e98b21feedcaa137c2c4da387639cafaab02f4d5ae06464261769f. 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/NLGM11924705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67178f8c7ac345547a1cd1dcc4faecb6c7b5730ebecb010cb9279184741b437e. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/NLGM11910090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2e85ce9c411dfbabacf39a330cc2596bfeae6293b419d8a6cb19bd5af8481d. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/NLGM11910091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bc74c58ec7cf76f8a0991fc21eeb9a480876d19b6c8079713d9d97d1ce62d5. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/NLGM11910092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96d14e688de1a1e409dac6c63893454dc5b26838d68d337c068f07d3c894a5e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLGM11910093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ada596b39cc947256dc1f2811df609051ebd5e8d962f8e503e89aa598f88b2. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/NLGM11910094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb1354f8719fa2deb5f5c83f17de4b8bb4139a6d406beffc08ba7822539f7d8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLGM11910095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ff5dc667f48d927f8b0c686655f6d6498a8275d319c705791f7bb557b52d57. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/NLGM11929340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1462832b34a472960edfbef92cea3bcff0a382d2131f345d8f9467dbbaf79f8a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLGM11929341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1662bd4bf424db8c3bd6d8db4dc79afc6b905130941f32f32dae3db159795b52. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/NLGM11929342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc41541e3b18ff65deb13ea0b1d9459967107843ffdcb0b6892c746098219f8. 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/NLGM11929343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe66156c3def7133ff43e9c846e27e625658dc7057596ad3dc8024bbf654a38c4. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/NLGM11929344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dc51cf16fc1f88556ff48fd58ddfaf1b621e16bf13f18bf99a02ae8272b071. 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/NLGM11929345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa297f49566b60efa41f809d15f2c969a692ebf37f114b54354deecdec543133f. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/NLGM11929346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2432641807b053efea29777636835ca355fac3b05c0458eb50e8c67a4cd9e002. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/NLGM11929347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd305b61566a9f1d65cefc7cd38f6cf888b29c17ac42e382f2caf69b92393d4b. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/NLGM12117862.
Kołysanki z Pozytywką dla Niemowląt (Pozytywka)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab3cb1a9278487eb1b4b3e0da0ada13a0d2e2f491d32c952cbe6512f3ac9db4. 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/NLGM12047889.
Kołysanka Kołysanki Dla Dzieci (Music Box)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45adfafe64a99fb1d6fe7e4da845c536dfb84b23819d35c9846b8387bc350de3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/NLGM12048163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6283c3c5bf93297b6d4a22604e5f8026bfcde819228906348def6a39bc9d001f. 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/NLGM12048172.
Najsłodsze Piosenki Fortepianowe Dla Dzieci
Muzyka na Boże Narodzenie Song (Music Box)
Moje Ulubione Piosenki Dla Dzieci (Music Box)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b5129bb7b865b1e0cdb2156d7cec66a1b650cc15f9b3f63dc234d18eba826c. 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/NL6VJ2208104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0fb21ebb2bdc588e4d4be4e1031298f5d8a7a674c863271da215b33a8ed987e. 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/NLGM11811530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913d921a0a02f0247a47d7db66f4176658f1bd8cde43edb886d8fbf56f551528. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLGM11811533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce927cb3d7079d112f0fc0e1e0590caf1db0588f859254f8610917530dfc501. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/NLGM11811535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd9742c8c396293c16211f879a260a9e01f8a4ac8524e277110bf9945d95605. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLGM11811847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10985e0bbe4b2dc7eb3306f1875ad6d2bafb3b4f2e039c250ac865d7fb07459f. 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/NLGM11811846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6514195b9c677ee23f74f1845232b5c243e34786904a761aeaabe82ae0cbdd48. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/NLGM11811842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1142a27296edd548a944189052d66dedbe7f7256c6552662823370cefdb0dd00. 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/NLGM11811843.