1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x578124ba2db34d481f59efce83a39cc5e926741d36909518ea799c6d9e13497b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06ba9e8e-f039-4c56-9c6d-6e65c9ba03ab.json and https://artists.proofprofile.net/proofs/artist/06ba9e8e-f039-4c56-9c6d-6e65c9ba03ab.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 → block OTSBitcoinBlock must exist at that height 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 0xbb00164464c55d69ad4c7406dac850c3592ef9cb2c7f6916c96d043fb8855efe. 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/FRX282494093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1490101e682dda19f74a90f52e9c0152babd4a8cb5a6ebef3a6639f1b6441d5b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:23:46Z), 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/FRX452431257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90974895bd31ce73b9a1940d3c1b731fe2dbc7cb34ad6df0e573f5e8ba2dfb3b. 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/FRX452431239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77bf26d116eae9e78067dd3060e95624c01bab4cafeb440027ce037f4e95a9a7. 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/VNA0F1781709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bddb88e313666d352918413217255b84e21bef7eff1da0493c2192e9c345728. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/VNA0F1781713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1a6b67b666d5d9e4fc479d9e5cc2d8e0757f78baf155868df342d3c582f353. 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/VNA0F1781716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1859d89b98312ba4280fd9c28d3dca3534b8e009b79f7b55913490c88dc256. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/VNA0F1781718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fa1017651a0ca535091dd5f00a40005d8c8a78b30a80152550a2365c00522f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USJ3V1229778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9334ed12676a2ac98eb6b12abab8d22491d7783b67d403dea5f02643a707dc9. 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/USJ3V1229781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3707226b7939788a7beeaa377ede906f213e4894ef6e35700b9b7d5a7cc0cc59. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/USHM80727772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c52a7ff843885206a20affb4d5b5a2dcb0611c4c5be395aca371062ae33320. 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/USHM80727773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15191c3843b6a0d8b5e2a580157bae3de26bb3748310625e9203aef13f0005f7. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM80727775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a1a620c13f904077f4195d558badc037acbf933d1430f89e361d568258b2e2. 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/USHM80727776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6885cb8c23585dc8851d78a5632639c2fa0281757dfff9455abd73098db39646. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/VNA0F1798415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cf659d24520b283119be11cb96f71b5860a2c544a26867fb123d92d7a89184. 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/VNA0F1798416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424d480071b98b087eb07cfd8722b4cc0fa50f2f6ff51e2b0a6ec63cbe262e5f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/VNA0F1798419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5e53101d9f0a617c783d2382b5b0f72d5c0742d1b774add645b94b0e022d72. 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/VNA0F1798423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b04e75041aad644c29343a8576d0202f99e290b126fc5fefadcbdbd23f233ec. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/VNA0F1724665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6e8fae7a0c35a1b59b5dac8715bf5755680677ed28bac318f989e0d4ba6391. 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/VNA0M1825689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6e8fae7a0c35a1b59b5dac8715bf5755680677ed28bac318f989e0d4ba6391. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/VNA0M1825689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d08b67a7c101a27545e34bf1461fd2d13dc12db660cc0bc676610274166560e. 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/VNA0M1825692.
Đường Cày Đảm Đang (Đại Hội Thi Đua Yêu Nước Lần V)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520f59ec577d32a9688e10c99dd6a93e50f6ebb8790e3ebf4b3c439fd433d9b0. 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/SGUM72301682.
Gót Hồng (Live Show Hoa Hậu Việt Nam 1998)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf20d7f50b4231fcb7133d682a7a511730a3fd668405e0770756bd49b4bd55a. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/VNA0F1723554.
Tuyển Tập Ca Khúc Văn Cao - Cung Đàn Xưa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890f37dd80672e430e84be995bf3550434856de365decce5d419ce05dc662a91. 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/VNA0F1765882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f534c3ea23639fad50be00cc147aca2384e395d94df839195532de97b3b55e. 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/VNA0F1718841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a1efdf12ec822f59b0cb241e09d9e9c8de14da67bd184dcec0299360ab56e6. 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/VNA1M2284589.