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 0x593f03de5c2e4844bf156b7d3138113012a633c79e90e763d8ce5bd44a6d81a4. 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/5b7266c7-3eff-46e0-815e-5ca01ea855b6.json and https://artists.proofprofile.net/proofs/artist/5b7266c7-3eff-46e0-815e-5ca01ea855b6.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 0x10dcc2d404e0c4b63fd4f61c9aad9067fca2321d8066a77fa3d0dce3938af5d6. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USRC18705918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732ecbdb7dba1d395fb885dda52c57301762958954d2d05f67c5c50d6051a149. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USRC10400337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75189f27b665750428e8dbb93987d00fb36fb8cb2bbe723d84267a5cc052247. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USRC10400336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10dcc2d404e0c4b63fd4f61c9aad9067fca2321d8066a77fa3d0dce3938af5d6. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/USRC18705918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f484a112d21ea72c03915ff8370380e335bd54d7fd54c32033d31a6495c011. 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/USRC10400334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8442ff6ebdf5d644814ee5480b2bf08142a844766de41687d00f4ab203b77314. 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/USRC10400333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ca844fa1c2cfc369b0d3ce9b50334558cc337d81200a942587a71732370af7. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USRC10201743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a875d68403c1e95ce9c8229a58aa4366d1d923e2633cca73eb76b2a36b3e33a. 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/USRC18705917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af11db9c640041f907c26c676bb16e4cb306cc0d250e27d4718a9b5d9726989. 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/USRC10400338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e57036aaae9422d763258fe203e0b897a5686f8f62bcfa643d67a16efbadf90. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USRC10201742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x732ecbdb7dba1d395fb885dda52c57301762958954d2d05f67c5c50d6051a149. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USRC10400337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa6dd708637f7a3da560651d48da3c117eeb7deef2ca1ad9f5d1baab9391652. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/USRC10400335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa75189f27b665750428e8dbb93987d00fb36fb8cb2bbe723d84267a5cc052247. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USRC10400336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4081f2d919504dfe819ecb87a708b918b4d6917022c30dc420551cdef4f267c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USRC18902473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0bc66784f2c9da2f97d87377e3efae20863ce0d29ef858564b935574c489fd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USRC10502994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19356e878e34fd0633786c6aab8c2733c82f372d1fde0db1eb7d2c2b56e5c21. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/USIR29700195.
Medley Three ("Three Inches Is Such A Wretched Height")
Stay Awake (Various Interpretations Of Music From Vintage Disney Films)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d7eef05e96cc9d45d9b986dfdc25181c53b26694e3198fe1811e04d42ff1df. 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/USUM70731577.