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 0x91d4ba59025a204b7a939170678325b37a1371ec6793c904aecfabff50f2b849. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4f58e79-59ae-4afc-b153-1614c8b931fb.json and https://artists.proofprofile.net/proofs/artist/a4f58e79-59ae-4afc-b153-1614c8b931fb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nevinnost (Original Motion Picture Soundtrack)
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 0x76771bc82eafb03389b3f491051a4de74015b56aba2f163df48f7ae0bfce2bea. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/CZJ361300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cf94bb4aa5073255c923dfe5aab05901b9b15ae7a892b9fa94837f709e51b0. 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/CZJ361300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ba695fcc7794a300d59164b79687355c5a00ac0551ae3679ffbf7ea1b4801f. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/CZJ361300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c642fd8da52a69bece72a7a4d86b9fa1e8a4664eb356790507fcc4d839c95a8. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/CZJ361300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0308b66b8bca1a2f818eb414f9533855db8d16e64c74aed6fea4b554158cbd96. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/CZJ361300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84256822b4a06365a594e16155ef7b85c00a01476fe21b4ed981b3a66c0ef509. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/CZJ361300037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32fe18384d44cc6b23b6ead8264ef86e675d0603e77afcc517ba89f224ef600. 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/CZJ361300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddcdee26b6b4fb3548cdab91d71846f060c32c9b809848781f0582cacddde3c. 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/CZJ361300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeeba4394ed5e84e30de5b9c7df2a2f93767cca49030519256def7906f71389d. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/CZJ361300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b120ddc2d7498ecbc2024a479e80a9c5a2eb1efb8077aa93881a91cae14df8c. 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/CZJ361300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5878b4728beab6e08171cf756f39ad7b3fc2a2a235fd33a59b72172f457dc75. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CZJ361300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d325029925783f6c6b120311455945fe45a1013555d006a7f7040b5c5718ca6. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/CZJ361300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13d8286900a5af1e11ef161ee82c19a0e619f71d93180410c8810f031b25cfb. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CZJ361300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3da578222fc95f4441300140c82965744f12991fb3b0137dfd311552e2318a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/CZJ361300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf757c20c7cdbacd0b7780314003e404a3ffa628287b19461c6309f1323f1e122. 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/CZJ361300052.
Karaganda 35 (Píseň k filmu 8 hlav šílenství)
8 Hlav Šílenství (Písně Inspirované Filmem)
ANTIHRDINKY (Musica Scenica vol. 2) [Antihrdinky]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5864472fa591fc13dab329fcf122ced94717b9e0e4f6c40ea03c7d96bcde5e46. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/CZJ362400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef39468c4fbcc5d1452ccd7ccd8331d6dd3f17b851b682af8944f074ac800b3c. 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/CZJ362400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddae9bed02b47ffb91d0f833fa8ee882e48d84746a74e7d3a0856cebc447559. 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/CZJ362400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b4980d5483f3aa094aee82d5d8d53f86426084b0daca0b1d2cedd9cf95a1e7. 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/CZJ362400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c40b1ddca65d743e20b5fe463adac4a9af58c58845a6cfefff2743137b9144. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/GBLFP2131521.