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 0xa3214184351a86c40e4d06fa708f21b372d5e9d82c4958f287309ff96bdbe34b. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef1e18d8-3674-47c4-b7b5-36b5c2638ee6.json and https://artists.proofprofile.net/proofs/artist/ef1e18d8-3674-47c4-b7b5-36b5c2638ee6.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 0xb562e6b0d30d7e1a96168037c2836f6db0be452a2a9658f35d8269fec21cfb36. 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/BX70Y2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446aaa12fcef378405f047e24022d335958967322dc1996cf6f432f36bea9952. 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/BX70Y2000012.
Nossos Momentos (feat. Bruno Diegues, Dom M & Joey Mattos)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dfc15f0de6fafe5755860254ac1aefbf5f3aa5c7277d220eb8c4baf68a9f5a. 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/BX70Y2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5deef58259b236ee8a35b5567cc2f43ffc6dbf0a683760c78c015b561eb19e2. 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/BX70Y2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641682336419ccaf5dff4d9fdd25150299ddb882b94e6c6fe27ff54c74024c34. 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/BX70Y1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8819dc6fa68b7a0c49ad505af9d7409be324c7279b392c74d3d7f685e69d0ee. 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/BX70Y1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641682336419ccaf5dff4d9fdd25150299ddb882b94e6c6fe27ff54c74024c34. 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/BX70Y1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5deef58259b236ee8a35b5567cc2f43ffc6dbf0a683760c78c015b561eb19e2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BX70Y2000001.