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 0xe21ee532e647656da5f1ca3cae877135076cb9de2a866ac1607ecaf5026565be. 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/ef9d9be6-7de2-473e-8454-a7673e6fcf45.json and https://artists.proofprofile.net/proofs/artist/ef9d9be6-7de2-473e-8454-a7673e6fcf45.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 0x5b5520552b55086f4a07ea916ef4ece97a5f94e5ec222c5388255bad9de53b02. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IDA141700093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60542546ca709f07c25168b6c9eb22d51d1cf09abfaed7b2c74a080392d7af71. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/IDA141700094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bce52516a86304d3aef67ae2314396a9655d15c118e00f27cbdd656f995383. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/IDA141700096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956d887f9b2140ce8b9555694b22143892f71cdb8a44f085dd7006fd6e89def7. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/IDA641900487.
Penangkap Pesan Dan Pemberi Lantunan (P.P.D.P.L)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c7ffdc57b7c065ddc69ed4af5d6480500132f47094e362e74108a34a4e93c17. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/IDA641900488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498369fa430be8c10bb168cdecc7d511a842e9721428c26c2a2ccb2d86530f90. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/TCAFD2084582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949687d09e08bff2bb136e90a2516515f0a4dd9a3013179ecc3ea90f7fa2b2c4. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/TCAFD2084591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9efe46bd3642c3d2ec9b2bdfcd2562c479c9f80593f722f05a885289fbf6560. 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/TCAFD2084619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fd2465b8285461ca4bbb53bcf520729f1ef823d126dfe8399b02c4836e9542. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAFD2084627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aeec37138054f74218d85c0b57f2f916c92c5f785eb02797f786cc2ea303572. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/TCAFD2084700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec33cf7d3a656a29c6bc4b4f888ffb8426b76fda227c4f0cc31f49bc9ec36eae. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/TCAGE2205470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5e7cd2fd3931eb84a3c69342ee5cdc0aaaf8453648a24078dc4f44355de152. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/TCAGU2363588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2c97e259e05362cf01b6cbeb3ad4dfdfd69f92952f596a628b73bda730a9ad. 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/TCAHW2489992.
Dunia Tetap Berputar Meskipun Aku Tertidur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf776ad12e5ba5ea2c5ccb7abb1b6385f115d247d177a99736c915a2e55b1aa7a. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/TCAIG2490684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff4742e5935f8711f4934766cbaac7dde2c2a1f5104ac8de5c092392834b69c. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/TCAIF2490722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd448b3edabc123a7781d3a08b176a44c89537b9583b6582186e92447aa7bdf50. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/TCAIF2490776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e355793fcfba77c2f489c8c372ededa5fba3b0fed633c2040a95361e87e7ae0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAIF2490786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570085bb6cdb7e697db27eee98a62ab454a7609d86e3999215a8d018c0bcbefb. 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/TCAIF2490825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6fa8288be3255aa7eec36d9f521468590416e6689f940b89856fd4769f1b4f. 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/FR96X1917671.