In the British Raj, batta or bhatta or bat-ta was a banking term and a military term, meaning (i) an agio or disagio, (ii) a special allowance made to officers, soldiers, or other public servants in t
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 0xdd65e6cf358c399cf41dbd3175250e05b5a227698c3496f3dd3b034669ab2119. 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/045f2efb-eefe-45d4-9555-9d3e7de352a5.json and https://artists.proofprofile.net/proofs/artist/045f2efb-eefe-45d4-9555-9d3e7de352a5.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 0x619cac616404786255002b550a622a35e7a9cce3633a8efda929fed95410d187. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/TCJPL2028169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af2f87def2b86ab1861c622a30942f464f50630312a33179eb66a2b1831e197. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPL2028182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0109a464fc9b75cc5a282471fa6e6e60cbb052638217f9f3d628f2722dcada2. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCJPL2028184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144f85f9ecaaf557006ae4c9d42046bbedc080ebd27f0e89376fd15a101a29d2. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:49:27Z), 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/TCJPL2028192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c728d21294c80ae789dbe3665db592c2437dfa3c18009af2b4e566c8bc215a0. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:11:13Z), 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/TCJPL2028214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b2fe8b53510694a40078cf06e0703817410e9bd2d71d2c58f959990c3d605d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCJPL2028225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c2af8058a7eac23058a45b1f9662be90c79b3008ae9942b24a14ef9d80adf0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCJPL2028229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d18d631b35c2a21f2dcc5e1a0d6e4e16617f09664368bfeb69fc63554923717. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCJPL2028179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6ad342e47322589e7295e1249f0f8144f0f885bde35de7501bf43401bf4462. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCJPS2247157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97813151806a6c12261142aca251ead74765f54d171b0885e154d934a59bcd2. 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/TCJPS2247182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d48247061fbe6210aeca6ca63afee10e1b4a63d6d96705cfa8eb40d6e95cfa. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:36:44Z), 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/JPQ461600306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c25ac404938a905a9a6164b4f5cbee85e9716f24bdf9d7cbcc9d2e48e0ef62e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/JPZ921809118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5dd0b769530eb27e7db6d486b69e1e0d51cfa0e4e50f239963998fe846ce93. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/JPZ921809121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ea26670e5c263c896922c013cc8cf7f0200de75c87ccfd8b6c68d0ab284fa2. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPZ921809123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32f8f54893a8e65ec679a48aff7c2f067e52e982ddc00d3436e800580d92d86. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPW721800326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9797cab22467231678f4246238f4ff7f9c014e7b6b80c557856a81b1f10fee7. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/TCJPX2362084.