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 0x9c4a5dd674f3ce801b8e5686202715fb96ce163a541b50df124262ec5b8484dd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84bc70cf-e429-4a1d-88b7-cba4e04e7a82.json and https://artists.proofprofile.net/proofs/artist/84bc70cf-e429-4a1d-88b7-cba4e04e7a82.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tri boje zvuka (Live at RTS Studio 8, 2016)
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 0xb17e811b9ee68640c58998151bebaba1c74a323cf563c9bbb8393035868f8e0b. 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/RSA131703102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859fe5e04fe41b9997e721cd9e78a0f7f5bd5a22feb6f273d094fce2d8047c35. 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/RSA131703106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9e0a8c83f61bc67fe6f50051e148a0103e3c645c3531f0802d4926592b830b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:06:23Z), 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/RSA131703109.
Mir i Ljubav (Live at Dom sportova, Zagreb, 25/10/2014)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0517ac01cf15283b32a482c736803acb0d902977f14b825bc08d6de8d1f371. 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/RSA131703304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddf9e136e8fd025ae9b89277ff7f30a2c12cdcc89cd2f6936f7179380c3cc96. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/RSA131703306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efb7cea4850db74e6bec75d4d1b87104d3835eb9e9b15ba3e6a8b543a4dd941. 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/RSA131703307.
Mir i ljubav (Live at Dom sportova, Zagreb, 25/10/2014)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c469201e029302f12491bc626407bb258471b739bd5aba62ec490310141d25. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RSA131703404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c76db098685ef4db62f03046212ab3e940900eeca370d2cd182716ab8f71f8. 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/RSA131703406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e87a95d286c816f13d70826f788c3dbb4000a0e855ee2db23c1ef3ce94c6ae. 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/RSA131703503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ee44b092e2098170950becb31f8558469bc4ab49ec91c8e08644af38516c6a. 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/RSA131703504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423b79a837f0cb9751047d6da5035c950efe6446154e1838ea39a901d8dd2cde. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/RSA131703506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d903abca5bbf338b53e10af6fa7c66d33207515f571a402335d6a641df1b17. 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/RSA131703508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5bbd20e4c9b92e5da81d5c61d98325f547735c5329d78e8e503d6710d76b587. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:13:56Z), 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/RSA131703604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d1af85fc6ae9fe9bae6b0e48fff3ae8d5fa6db63f4c933ec2542d12d26e298. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/RSA131703605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c025c32c81d7bf17eefdb839821c40b17c1841c7ea7f25586ea8b433e4c8e9. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/RSA131703608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf66ea4ca82a2fe8fe87eae09f721c2320a32b6afea166853a9e81ebbee85a3. 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/RSA131703004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081aae70333cd7d10dea56d53e1ae4fe69722ae62097c3e8741fd093af45b5ae. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/RSA131703008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b03578442bf613c0b2e91958975533a6b8d5bf26d1be4231f18bbd90e74a42c. 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/RSA131703409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690fd078caaa8c3aef35c516032f6c8e8ba727eefefb8b08def4faa76a4603c9. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:49:13Z), 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/RSA131703501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46072ddf0996d3a6e9d7d200a49d9360d5886c2486cb0a65cf4e4a5bf3dd865. 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/RSA131703411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3411613ef58cdffd142dc2de61c06a5b69624eb0229de1e3d8806548037a6d30. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:42:56Z), 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/RSA131703108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9044d004047ec8a418998d002bfa32ba2bf0a9934a9ce2c730e8eda81d5fab6. 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/RSA131703303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c01adbc62a1c066bfb996de4debfa15f115752792bdf6ff0316ef3f14357a3. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/RSA131702802.