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 0x46f9ad6e7b915caeddb4b2e78d7d305d6111ed2981a5f33fba369150d056df5c. 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/db2afb6f-192a-4a00-ba93-b740be3197b9.json and https://artists.proofprofile.net/proofs/artist/db2afb6f-192a-4a00-ba93-b740be3197b9.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 0x21f7c1daccc46cf70fba73f66a593bb16cf5ad7f53ed578a15263f517eb5732c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/CZA163369790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa044cd2fca6229b14e166bf1c97ae047857afb550b7c7d88cf3961ded748327f. 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/CZA163369791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe57f1f5bcd8480fe0a4d973e9683756578ff07cb1ffa0a1882132fa455acb1. 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/CZA163369792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87c87b0f8c1e4a5eb523075444f54ebee07538f33af666b196bb7a149f1377b. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:29:14Z), 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/CZA163369794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x122825806c039ec25b2a8e0f6d9e1ceb37aabfc8e0088b0f35d727c2f8bb2b41. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:00:57Z), 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/CZZC62100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e7f8853359b27eda587ca82685ce0726d09a54c208078ac7a96370e8f51f82. 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/CZZC62100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3aadbd8dca87715dd25a7429cdbfa9c94eca2b3f5d1973efe472fb755b34f0e. 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/CZZC62100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8029fe2c731ec3c6ada3f92da3bde4d9a96ec00f973a693015d7299de1f620c5. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/CZZC62100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0760e94c42f6e8a059f1362bea35dd94de8fbdca23c5018bc193dd733cb195f2. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:05:19Z), 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/CZZC62100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80502b45cc8d606212a4269ff55116c853aa13128b3ff11db08b1d157da0823b. 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/CZZC62100009.
Tisíc a jedna koule (NoD session) [Live]
Tisíc a jedna koule (NoD session) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2bf8db6b59c944a9e1c715f92c0904665e42507a53461b25d7c363a1dec23f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:52:21Z), 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/CZZC62100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40a7beb207e766e2cde75318c05a42311ae775462852ba5c01e44083f175078. 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/CZZC62100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bc525e1d4ba05772a556bd602e837c66ccfc642a3b1aade9b7fcf6e2a250db. 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/CZZC62100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbbbb2387fdf981104738fff37a939ea29a17d40b913450c9390f7f3f1e987a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CZZC62100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49df74845ac91e10e87ac678a8dadf400c1c43e5cff7824550036d2855ececcc. 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/CZZC62100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026dd01ea21c17bfe488f722db71c4e1c54348f23dcb5bdc61eb900c04c62a59. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/CZZC62100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a6d67ff25c4cc5632d6fae42b82317c7a7d44e7ea5211d260cbdbe9ef06119. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:43:15Z), 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/CZZC62100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48037256b810611aaf6ff13909d960a5c78d7c74fff1a95d52a9abacdcb7f5d. 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/CZZC62100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2519fac9f9290595e19898c7eeab3b74738d0899cd863244db8f8349e3e3024f. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/CZZC62100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82a38d26617ca26af5940af14b1a9ea1b8c55f05a7a7ad522bc9d1cbb0771a5. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/CZZC62100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d3fe4caa3cdab8a0159b27ca35596d448c3bacafc323afa2054d7b46739c4f. 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/CZZC62100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c38c37a83e27abda95b445d05c06ed9b50416ecf9a5e89f164eef9cbac55ed. 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/QZTB82373300.