BCA may refer to: Commerce Bangladesh Caterers Association UK, the umbrella organisation of British-Bangladeshi restaurants Bank Central Asia, a private bank in Indonesia Boeing Commercial Airplanes,
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 0xfd28e194a72b8325413c4b2801c31e05990f457ee2f810d41157a2306e39cec5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9f4d9172-e491-4daf-adf6-6bef7f0b8c88.json and https://artists.proofprofile.net/proofs/artist/9f4d9172-e491-4daf-adf6-6bef7f0b8c88.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nos Miran (feat. Eiby, Verzatyl & Italian Somali)
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 0xb548e70c7c1eba970d5c4ad2fe733dd1fe4d355bb0a44d791121ac8fad504b92. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWL12200493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7945ee74d7da061282ec93ceef9117a2ede1d6e6372fd44290907cbf7fd87e64. 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/USWL12300252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840f0f66e38800871ffb9b133c5d5f5457cf4a8e757a31c05d0e0881c7cc3133. 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/USWL12100609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbfc8b463e472ba9dee1931563f1bb0672e444d2a5992dd0d429adec15d8221. 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/US7VG2170948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abadee7d528769e760a6f3616362f12e4f2a6c579b289993c0597ba959cade7. 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/BK4DA2401383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbf50aef6f1ebdc9437e820f72c9aa77ffd096b97829e671f4f78f879d85be0. 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/BK4DA2313858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54dba823e8aa46d7ba732e866a59421f8432b00a009a156587646dfd95fc608b. 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/USWL12201411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed29ba89518c2e46bd9c0efad9e4835ada0c4d790faf095faf5f5c285056a289. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWL12200094.
Vitamina Q (feat. Justin Quiles & Lirico En La Casa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77258068d30f1c44ba986cc076eaa855e1157d9a44ca328b65873d2c8893a828. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USWL12100318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed60b7d5201204980136be3bc7c426c8391e6e93cac6c6985ef2c1424372af4. 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/QZNJX2057203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fc4939eea1a54ccb688c66fdd2c3794351569c7edd3f78dc83d40e1e26e457. 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/BK4DA2465118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7d3181f135135cdd993115d9c7c6e3c856ef8d910a7eec282aa830ba1fc66d. 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/QZN882406801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa006d765250058553cffecd09f65693c29875620cdc00949c3241f47da54b455. 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/BK4DA2440298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98b0a74aedad35e09244a933cc755b877e7480d456dd44604ce7dcd51f5faf9. 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/BK4DA2430959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb1168abb1563d7388540ad87c52e8c6bb1b71ed943fb3cba3e45d971106867. 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/BK4DA2430893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560c4e1e84e164e1ab2d42c091d22c4ba236c8545dcccb163ec2555b9fe4e715. 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/GBLFP2159193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6a89e24aaa582c3df5a0fa2eeb81d581c93c3e5a03a04959b9c90f5c815783. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM9WM2000030.