A phonon is a quasiparticle, collective excitation in a periodic, elastic arrangement of atoms or molecules in condensed matter, specifically in solids and some liquids. In the context of optically tr
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 0xf3ce9203359750d934b22cbe53332acd260972164c62ac84d9be649ebce6088c. 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/26701981-0601-48e0-86a2-f65d0bf15e27.json and https://artists.proofprofile.net/proofs/artist/26701981-0601-48e0-86a2-f65d0bf15e27.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 0x758c540e113e7e8f2b67980d55344d018c1274512c49cae36a2391b5533e8fef. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CA5KR2022129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52e86a22b37772469ad378cb1740440bf13082c846ad920bccf0a28f10b4141. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/CA5KR2078094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8508d9840ff8987850bd07d53ff8071b83d8d153290f7157fca9a70f56638867. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/CA5KR2109908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ed70882b5377b0f5e7b6ea44c1796a6250937a79936eac86d83c6e87eb23b8. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/TCAFJ2137372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab34a2132bf1906fe323b35bc72b8eb9ccdab1933d40b3c211d831d1c6fa178. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCAFP2172445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49a32a8bc624448f6ee5d7a52c4fce085dddef5757cf8b91a4b136c1afd73e6. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TCAFY2154503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f4a34cb9429dcbeeb480d438a44fe45f4f2b47d3c1eaacb01bbbdcb4a17ef6. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/CA5KR2228505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d67d599a6940df9e026ea0794e8e7b9510e59091aeac1d2771ce7cc1bde70ec. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/GBMJG2511835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7127f721d732deab422f856abe2aad2ede2ef167ebbfcb1bf5e98c51201c86. 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/GBMJG2511837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4134c2e8753740ae72362c8babfde8dba65e8ea21080871cc0b05eb09b475e3e. 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/GBMJG2511838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5507cbc616240050b0d72ba58695cabc9589363a14b37e0d17b4dfa8f88efbd2. 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/GBMJG2511839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063dcbcbf719d994d0cd4a226721346a0a8e6571af6ebf0e8f82635998079421. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/GBMJG2511840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c9626c3855a46c3ad0621d1fd96c86feaaa90e327394ff61908912bce04fba. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/GBMJG2511841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703ea3e59583171c75d88df983ac78677a3f930d4f856da4611e1777153c16f9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/GBMJG2511842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4a2a35022832855fb86a8214246340dfc6bef483fd62cfe0f3152668e2c21a. 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/GBMJG2511843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1a8ade53a5fe897ffd68370727fc36cbc3e42561cf8d91d8144ca5449e809a. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBMJG2511844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe58f14bb305570c57e92b13a6f9362fe9207effb962cd32ec8dc3f2bb168f8d. 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/GBMJG2511845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951591dad843da69d807953dee770014f4e9c8b3ac0b5d98f7d2035d904fcdea. 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/QZHZD2069477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1456f8a2b46a0b2bfa3e5fed2bf813aa536bb8b2380229a629d82ae9364e07d1. 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/GBWUL2073396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a08523bd81e726d8cf4dcf66b09f3f2ef4db097ad7bd675cd8ac791b6379fe. 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/CA5KR2191433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b904cf0a553c7c7a5c11f8bc9fbe0cb61d9dbed9d6d450d340541590c3fed2. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/CA5KR2063499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03574012454c65ce43f558c72d68efe1b10a62e5ca397f9f1697ff873b0a18a. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/GBWUL2013088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9e4050375b1e6920bd3fd5fc3f15e40be38f760289e46b754c7bad3cb6d2ce. 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/QZMHN2047121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f2e02043fc97bf0debc523bbd2e9159aa177867b679d97326b81b273ef4b32. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/GBKQU1987300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x063c01abbfa4937c68c45dec283fd746ae5eebe2c563d169637230e86093d6e6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTGW2403415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe623ed1639927d2a8d063f0b309bd4c325667122c4228cfbb38195273a5f8761. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GB8KE1958703.