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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a565663976e9af361e25230b06d70348edceee71d97256fd446d8963b6fef21. 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/c2341908-9361-45c1-9689-8f04378ba9d3.json and https://artists.proofprofile.net/proofs/artist/c2341908-9361-45c1-9689-8f04378ba9d3.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314619ffa59fe6ee39f1df45687ae58bc27200cb7f75b8ee36506843d9e2dd68. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/KRA401500266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b712a6c848c58400287cfe061335e29b46c0f36313c3d11ae55b8fdf89aff0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRA401500269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698dd756be3c5de8e16dfe593e9d62e280aed2b7fe3ccb0176b12e51f986f823. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/KRA401500420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46af7545fd424ca72a8496454292c4ae7bb3cd11c7b4eabc85d6ccd4f4ad8fe. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/KRA341338731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3183bd5218c39f816bd80551dc88f926d9fc1c5b4a58088a6062c241c711e6f. 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/KRA341338735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68c9f78e6d5d589ad81dd2af1782390aa9ac1469db8e04b3989763189458484. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/KRA341418655.
Another Me (Police University OST Special Track)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe3ab3b8eb645f946e6ace739ccc5cec5edea4a2a0f9dc3798b46ce7602129a. 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/KRA382160983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1481c0da484984209978e2a2d13cd0eea7a8430f947ee11e21af1a12a82d7aa5. 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/KRA382203031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884ab360e7771f308c1843bfa06b70d9e7602e5921fce3619d50ae22ac0ab411. 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/KRA382203033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce76b5f72001312bf65506c6af9c9af91c014d203f456bb7f5d298745a84321f. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/KRA382203034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2b864b00888c378de3f39913c61696372a9a19c07240762df1ea7457e78e1d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/KRA382204936.
Work Later Drink Now S2, Pt. 1 (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe258c3e03e20e24bd46aaa2950a14f297322315210261bae13aefd93e9d57f28. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/KRA492201247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf854b4936a469fdd9685c0066fdcda3cd1e1fb36a1fa5ba26124ea857c13a1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/KRA382322433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2545a19e38d09739aec4b394fb57bdab9de0f82725b9589debdd57d4139da35d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWDW2571702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee2d75905a47951c6cea73e8c9c930464ec09c7b5c9f848568ee598f0d3cb25. 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/GBSMU9598485.