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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f02f89248813161cb73a6d4353564ca8f52d948d20733b2b37909ce5119b31. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef75c229-72b2-4a1b-8fdb-3f440887214b.json and https://artists.proofprofile.net/proofs/artist/ef75c229-72b2-4a1b-8fdb-3f440887214b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bandleader - That Old Feeling with Guy Lombardo
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c07e5ced07467c5df926f136dbdefc52f69ad3665cf002c48a27e96f1f0516d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/NLHR52165635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f38a5e5f773b5965e81c927073edd355e8752a74c323130aa89f4ebfff8231a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLHR52165636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd1da156390f02fe05d122e4fee5864f28e29e351ff8c9eb9890c8e37f6855d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLHR52165637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4f7bfb4d51a97bcf0570498a1f50616b3e501669dc55893c6e11896cefe0c5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLHR52165639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46931009144b568493f80303d304ede5f3616b527cc781ec71f66f03f6f00e7e. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/NLHR52165631.
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 0xdf2a0bdb4745f86a9a292b98f07598aaa281e8055644d5ca4f4bf2da2ac87101. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/NLHR52165634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750c3de8441d39c50d0f81d6d6b068733aab0d2daf850002e75a7bd507a9b06c. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/NLHR52165640.
Stormy Weather (Keeps Rainin' All the Time)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9e86d31b5ff08956f0ce06718a37c67cba15129a21cdca35e4a8fd4eeabb73. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/NLHR52165641.
Let's Spend an Evening with Guy Lombardo
The Sweetest Waltzes This Side of Heaven
Canadian Swing, Vol. 2 (The Dave Cash Collection)
Canadian Swing, Vol. 1 (The Dave Cash Collection)
Italian Songs Everybody Knows (Remastered)
Sing the Songs of Christmas With Guy Lombardo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb99eeec1fc5829fd189cb82cfd5a80476865c76ef179e8df4b726310a49dd0. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEBL60637730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc057de8728f554797e9795bdd5d7dd83355eaf926ee7848e50c98c853efc955c. 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/DEBL60637731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1542834e6d8e07bfa2b5e2d421910aa1df52f3a5ad674089c2bff2ff67d9ab8. 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/DEBL60637734.
He'll Be Coming Down the Chimney (Like He Always Did Before)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fddfa580e1b1b3228e1a085a8cb1e0685556b41f98f527b8a3baa13ab03dee. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEBL60637735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087b71aa8c0055f87653cc092ae2f3edf045cc8f82160e91debd77a4d2637080. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/DEBL60637737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d6f3669acb71410513b08a6eebd3d4eb2c5f1e31bc7f779384f3cda44179e3. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/DEBL60637729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7fbf5a3d26e8b490e914fd9dfee12097ee0201f47ebcf6bacb302b29ede45b. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DEBL60637732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647490761ad30f2d2c3c7f87ff2100839539b7e10e3d59f605040f749b1ef860. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEBL60637733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e5aa79a0b80ae3f8916bf2c6a6548aa7d789c740c770b1633003a4179c00708. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USCA29101523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74da64973d15a92e4368bd404fdb830912bd6f9ec6232b611f0e085843ab33bc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USCA29701005.
Guy Lombardo & His Royal Canadians' Get Out Those Old Records
Here's Guy Lombaro And The Royal Canadians