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 0x4d9da13c6ed6d5f841c406d9feb6b0dca594002937de5534c5d8567fc4cef38b. 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/15be3e94-57ca-4976-8b80-f47aa0aad56e.json and https://artists.proofprofile.net/proofs/artist/15be3e94-57ca-4976-8b80-f47aa0aad56e.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 0xafa6b6397e6a9f8f992ccaddfda91e1987f7cd99754aa8f97d4bb8690115f44d. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/PT6HD1900007.
Leva-Me a Viajar (Associação Sara Carreira Version)
Leva-Me a Viajar - Associação Sara Carreira Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119be498ba97cb49fb7450f2d7145bbdee1de8569f4c4023727e3e3efa9904e3. 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/PT6HD2100036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc018cd28415d5b4e28ac313fcb7f4b9e748d189cee479e11be25819f94316a3e. 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/PT6HD1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4998a6c91197c3d40bae6ec947d894878406135fddbdb39c98c4dbaefdb34b0. 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/PT6HD1900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5f39a494455724662b590b4ae9f89edd7f64c4dcef85aa9526341a85c20bea. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/PT6HD1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a53c11a65d031fe32c677c42fa856d1a1e301912efa3f9ee70d9ec8fab2d7ff. 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/PT5HD1810016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d9dd15efec53b6390091580f4aaa6a25fde4117cf0a2cb50f44d8dff99a3d9. 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/PT6HD2100001.
Une maman soupçonneuse - Extrait du conte musical Martin & les fées
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa720ec9ee98d6184c49d6d5131acac20f387046001427968bda6dd60a554d4d8. 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/FRZ051500344.
La vision des fées - Extrait du conte musical Martin & les fées
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1af1ed6521f4f2d01c0de0e47d5d3b79615419624cf96a2a648a9c89afd81a5. 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/FRZ051500345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2969d1465d5b748578f6c1f0580172fadf56d210e415f7c79b27ad4fb4ff781. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PTFA11201796.