Big mama () is a Chinese language neologism for an Internet censor on web bulletin board systems in the People's Republic of China. Big mamas are human censors and moderators on different online plat
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 0x492e093c997d111de45c3ac1f41a1c0cda72d838a2ec20e21d3de7e4b6c9c9d8. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0017996a-65e1-4c8a-81ea-6435be52131b.json and https://artists.proofprofile.net/proofs/artist/0017996a-65e1-4c8a-81ea-6435be52131b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x4e69dde47ec068ffdb065567d1d4c32fd41342b5b2f47c8ae6893b607e16b59a. 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/ITC940600525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e69dde47ec068ffdb065567d1d4c32fd41342b5b2f47c8ae6893b607e16b59a. 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/ITC940600525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267e051fcea6694e52bcf03b296743977181e6549db39ee4f00bb7f0f97e6150. 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/ITC941000217.
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The Legends Of Soul And Disco 02 (Mixed Compilation For Fitness & Workout 135 Bpm / 32 Count)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b3b0e4d4aefa2cf78ca0a9f6b474976109068c4d71dfa2034725e9a8fea9c2. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/ITC941924515.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
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70's Forever Vol. 4 (Mixed Compilation for Fitness & Workout - 135 BPM - 32 Count - Ideal for Mid-Tempo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2fcb29dc643dd945c533d6a7bc8548c29e0b3874e0285a33cedd6a72641ed5. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/ITC941903536.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x123ad3d79302b8ba12491c59e946577fa614fb6fe861f30f4efe6ea455861e04. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ITC941903540.
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Everybody Loves Music (Mixed Compilation For Fitness & Workout 130 Bpm / 32 Count)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a94e38266b43491a7c360a2d28c0a1ad997f9503d6a657a277280205ea3cee. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/ITC941926219.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0967c04c8c995b0288a8b7feceb5223a2a425e97886588e2ec940c8b64cc47. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ITC941101684.