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 0x65bddd5bc54222575ab456db1fa8dff2b1dbf3b38dfca488e9c062ca84852e29. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8dd5a113-0909-40e2-ae80-5767fe1e87f5.json and https://artists.proofprofile.net/proofs/artist/8dd5a113-0909-40e2-ae80-5767fe1e87f5.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 0x9ea9083958d2b94f05800a7207a5a2504c1ef965b865f0a6685750a550fb4cb9. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZGWX2216108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76be968d8971a22c18c46b4c4531d7459c8f0943dbd478fbc97fed72d877a0bd. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZGWX2216109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6400f2d05b828aa034d855b319d311910e62622ef0673b17d65c018962fdc0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGWX2216110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60ece03a1ba0827f00308dc3b7efa507fe4e006f7129aad0649e8f6ca30b114. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGWX2216111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e0a3326e67216720f96882cabc2d3faf2a212303d236328b417d9b26aa41aa. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGWX2216112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9520e09947095148c1531415b9f645fd276f99787b075787f5c34b00035d75ca. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QZGWX2216114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e13c8a7bb51ca3d64a399a7b6d2f5fa4518387d5a20f352818a154d35679ad. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZGWX2216115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6b3853af2bf2ed6e109003ecd363a5b2b56c1a5db3aba4b0183180e671c46d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZGWX2216116.
The Noise Live 2: Anniversary: Centro de Convenciones
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ac31e75104a6119b39a282066f32617a1412fe95dc670c4c81b422176fb179. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USJE62004073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f54c4253fbc89801b5f1ae4c090a071c6d07df56c5116c67af4816a8e216c8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USJE62004075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8c27371cbb3ac7521b9de3fde53c1d94bbdc826d69a101769d129a0219b79a. 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/USJE62004078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69569ee7890b00a2afc9b2b04f3dacd32b445d89f7c4f7e47f0f0e40eded369a. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USJE62004079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34658fea2a269044466e6cfe55c585e8abaf18cde5f41f91c56ed5c1c979d93. 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/USJE62004088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc3c842cf8b6f155a10afd7ab79c675cec23b574bd5068ea5d65a131141441f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USJE62004093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac0c2eb626017cb74660dee72b2094f99b3bb4e9b49cbbc7f89362da8b2bb2b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USJE62004103.