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 0x8aa199bcab97ce7bbdc6b586a31ca0346e440d4a0738c241ccdeb60d48a462d6. 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/8e1e685f-65b7-435b-9217-0ae61a0834e6.json and https://artists.proofprofile.net/proofs/artist/8e1e685f-65b7-435b-9217-0ae61a0834e6.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 0x4bbae3e97b5f3c1f6e5b7e3c44e10874ed5e66d51542abf1336c0dc5234e5535. 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/BXDOS1700011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80707a24226c69db7b1bd3dd7eb234de1c026dbd52cc5f27e1b5ce8a75f8b8e7. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/BXDOS1700017.
Pot-Pourri: Melhor Nem Pensar / Liberdade Virou Solidão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe829a27649793d078e4782562f52d5df4200616220ad6e2196404460acb59cd4. 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/BXDOS1700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x820248f158077a6825210f21519056591512d2b7b624a4f7ecac516a243b53d0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BXU212200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdcf4b569930e3fa424439d5ea84bafc42856590a32084a2afc698cc2e9df5e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/BRRE10300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0aaad0839dfc0bf9301e709304883c8aa9eae2abdd090adc0ad16d08a7a201b. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:29:06Z), 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/BRRE10300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5789647e35131dd955c56e543c3b189e8265c065a7310f517a19378b5e05f4c7. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/BRRE10300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba6f12c9b22091f545a800f3f69b2817ad253288f9835fb17e0a1c4ac8772d9. 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/BRRE10300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a9a8c2eb00b7cbbf97c94aa575dfb6c565e0feacb3f5fc14169cfd8bd284838. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/BRRE10300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc578a1813f7a9c3ca749727800c156586dd96111e6c96af4e5cb9e18cbdd7319. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BRRE10300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7374d636243ee6acf65750658d247b4c413fbcb4a5d6822c92c38e55700fe2e2. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:08:20Z), 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/BRRE10300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ef7d99f63421419009fb05a4de53166ebb5e0c8d02d4e11474387be370936c. 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/BCOMQ2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a65238137f960a2ff0307733446c3e08bd1dc64cecffca49eaeb62abc171fd. 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/BRC832000022.