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 0xeafd161cfb011b93b188794534359110712f2ef8b4d814111f6e575e64d4e6e1. 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/71a46301-fbb3-434c-a251-623a7a177280.json and https://artists.proofprofile.net/proofs/artist/71a46301-fbb3-434c-a251-623a7a177280.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Những Câu Chuyện Trong Ngôi Nhà Mẫu Giáo
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 0x6b85871091bbc20253c07eb375b1b9ab0cf3134188803e23ac9b55ce84daa378. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:17:56Z), 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/FRX281992043.
umakeme (feat. Kny, Ox The Moron) [Beat]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5beb760c2fdd26902be431171913e27735904ba0ca64fdf50db41973e0f98a5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/VNA0M1921575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0258c96f35e1673aa5385e37b9606ae9ee5ab7dde3f1c89e0e66e23156fb467e. 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/QZPEW2212168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880aa49b64744e68805995da98e04d8904c3fa2e5b36127e512582e49902d450. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/FR96X2252876.
Ngày Mới Lắng Lo (feat. Mon Hoàng Anh P336)
Xuân Nghi (HITStory Season 3 Live Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687c63f1b7f41e4232d9db835ddc2a440d918590b4ff213a22b65208502678e3. 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/DGA0T2466096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76122a598d7dc83d0e270a11ef8275d672b206e2962a396c90dcf9b9aefdaed7. 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/DGA0T2466099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9374d2693c7c5ab34553cc6b68b02600101d6a9062ad790181bc291d524c75. 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/DGA0S2423457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a941fc528aecc3631e85eaab7c498787230aa00bef686afdcb29a1afd56abb. 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/FR10S2548585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34df0be044747816b977f6c4aa50808505a531c805dd02c14cdfc7763537d65. 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/FR10S2548586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef321c02911cd0dcc9015ab2ba711f22731730934e874c2fd148bf4082f52b2. 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/DGA0T2411631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46e74aaecd3441d63c6d76eb0dea527124bc4a2e3d6c77bc044d7dc3ab31ab2. 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/DGA0R2464950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d6c5d16ffa013b06bb643843808052cc2713874325ae80a7686bc47b2dd7fe. 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/DGA0S2460795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa41ed58e0d9c722d39d80e431f23ea1ef7bb1ce41d051b08365b27d24e62a0. 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/FR10S2576731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ed045998c123c36edf43a9a9a869df2a69662b771c4e220e5c268b929b45a2. 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/DGA0Q2414533.