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 0x81407a223a72a87cdf12d9d4d26571fb9f4723bb0a2789254f4c6bdd22c3c3e9. 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/79332dff-853b-4a88-9b4e-e4343acd3659.json and https://artists.proofprofile.net/proofs/artist/79332dff-853b-4a88-9b4e-e4343acd3659.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 0xdd359480cc1b3f9cdc0444d1437f9931bd01351cc0825ee4a585e134b7224f8d. 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/ESA112437281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fd96f8953f5a1cdd7ab01237616505dfa7d24a172fc907677d2148bf277d3a. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:45:07Z), 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/ESA112438629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d214ee8e065c4ad044730efee15095f1dd3841068806256f696230af727d40. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ESA112446283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ce1b781598c39f1aca9a4eea5eba81053eb39832ea36a0cd13333e1ddb8f91. Chain 2 (Bitcoin): anchored in block 958647 (2026-07-19T02:36:14Z), 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/ESA112455635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384c9d02a388a6b210a33a5cb0d42240d43b3aa642c01886b2210d3b341aca4e. 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/BKC3C2400031.
Porsche Azul Eletrofunk (feat. Felipe Beats)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a91718f275524ead0da2ec3d18c217aee2e206649cb3ca5efe5923d896b1f8. 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/ESA112440296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3769cc5dc30496d806ecf16050ffea2914e9635fec351b73dfbcf8643cb8398. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ESA112440297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9beb8582be835e49c0ef5c2f07f79f7a3136cf4c957bc2717472f6862af869fc. 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/ESA112440298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4edc1bfe55311d6f5df82b1c403792daf30d86a20ee002e56926e2b7c6f7984. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ESA112440299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5646464a3e02ecb5f8c4634d6411b45fc2b58d800d7ebd9eefb5071f02f255ad. 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/ESA112440301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd348a2fb2cdcd0a5e8f91c4c9321d2e708bc9c85ef2b995d2bc9c5a78eaf9caf. 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/ESA112440302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d83230c43452603fe906f506390dc3e4145227f7a63babefe19c419a21ace4. 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/QZPLS2441793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c7a583ef74a78157b997f6498476b529736a3c53fb097924461a2a5d7d2936. 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/AEA3A2468784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc7f4f815dc5875149f3e51fa7bfae058783581f1ba30c773867a43401ed017. 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/BR90B2401643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f2ea2214ce3017887abecbdbb15cc36d60a11d4d3f31d34b52109d7494d1d3. 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/BK1P72400175.