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 0x18c7c54b56b9f44ba7837ff6c1da0ca2c09128421230b83250a5630c0bb53e9f. 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/c2bd353a-a109-4389-937c-6000dc3005ed.json and https://artists.proofprofile.net/proofs/artist/c2bd353a-a109-4389-937c-6000dc3005ed.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 0xf07916e68ccd060f237ead88d66a1a020bdef85e4fc835b5c62280cd81fb38e0. 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/HRA040638967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb20595e028d68223d920168b948f64904da6ba4b43a95b330da0b742e91026. 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/HRA260403705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccf64ed19bea568c8715dbff04da31f674b5ffd40a335d2ffbe037cc68cf058. 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/HRA040633748.
Komarci (Ljeto Nam Se Vratilo) (Prvi Dio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6503db9025b91ae7b79a50a96fa12bb25f8b50aeed7322029d1ced63c53a69. 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/HRA040632964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af5b9a2daa2ec4f26f824d263f27b24b7e8606d6c0d63e8c2b93d43e800474a. 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/HRA040632966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f0e498a35346df786ac32ae3e89297430cc74fefe900b9912eced5b00f48e4. 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/HRA049525177.
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 0xf443749164974668e690c07fed15bbce59d06210b4bc62614d18783ff809639c. 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/HRA048432965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf99d7f2e0b7b4156ab2c539466fcfe3b7668f5ea3627e94b6dfe92bab5a7b8. Chain 2 (Bitcoin): anchored in block 957246 (2026-07-09T01:49:50Z), 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/HRA048449025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b35e090e417d16459c3bd0dd41a42920df0f5c391237a315badfa3412fcafd. 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/HRA048432967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18e1ed448370a6c6e3ad7ade3e4a617ca3b6be0881d20423dc410641823c266. 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/HRA048708902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x105a9d78ed2ab3626976ff8c8922ac51f17a4c0c5aadd0412a6b0b6a4b3f2ef9. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/HRA048708903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c59b859f6efa5bc55cab330b7c34270c6b6705ec72a1d33845bc3e414c1fabc. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/HRA048708908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed666d99b0c20cdfdd9eab0a64ee3db0136888b64d4095eb4efab03a5f0ad82. 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/HRA049431156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2745ed498644a4f45a2529878bcf8c65d0b8dd4f827bf93ee2754f232b166657. 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/HRA040642002.
Ostat Će Mlad (Sjećanje Na Krešu Blaževića) (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ecece594e2c90b8ee90a845165dac1a3bca1355d765610de957526702d836b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/HRA370701053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2cc2454813aa4f26274475f3464c71fb1219ddf5292b1571f217b7644fc90b1. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/HRA370701063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d3f7e95a35ae088243736c07580e2f96cf78d100e996775b472b4948d62ab0. 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/HRA048325179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c01bd00edb1aece34a55d5516a84884a5a6d2bba9dac0b2537603e7e7e7524. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HRA048406976.