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 0xf0e6984384ff443fd244bae8fbb31b5c768b8c0c6547ec7f1edac79d2b3bdde8. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/61e2a35a-52b9-4642-b113-bb2cac9fcb52.json and https://artists.proofprofile.net/proofs/artist/61e2a35a-52b9-4642-b113-bb2cac9fcb52.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Golden Age of Light Music: Grandstand: Production Music Of The 1940s
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 0xaace310d711c6ed5ec11b4cc1971411838b8d0ee2d33e8fb99a27abaf4c66eac. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CH6631452017.
The Golden Age of Light Music: Childhood Memories - Vol. 2
The Golden Age of Light Music: Childhood Memories
Roger Roger And His Champs Elysees Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dc0192e34638b88642712c182a3dd86b1e80ff5ab052021d5ce16b4aa1e945. 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/CH6630652506.
The Golden Age of Light Music: New Town: Production Music Of The 1950s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf070b861baedcb0816025016c2a058deab242b7516f630ce510219fbe7a33c87. 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/CH6631452402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54dd8dca249de3dab5468900d478265292b90b75e2ce9feb682ed111f0a9ba94. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/CH6631452405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa48d37656c1a671e02e95bce29da22d8deccbb5ca8dede51486bc0da64d97a2. 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/CH6631452421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c587217efb89dc1c694f474223c4457dc2379ff8420e1ec5831eb899c7e06e. 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/CH6631157501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88923e73d308aaf700cb9beb8982ac4247b3bae81d8a96c963973c872211a2f. 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/CH6631157502.
Leslie Jones And His Orchestra Of London
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82683b4e392c6215c7fb10890251a93048be88303f6a7f74764024f514713bf. 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/CH6631157503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e9553a6fc4254adee5bc6c312b2e34134974476588da77913f4bd16b88b8cb. 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/CH6631157515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4adc0b9a2f51cc2af7baa539048a5fafd5a4eb6e2caa377b0a14a568691471. 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/CH6631157519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6088ade526eface797705fb177c9a1c97f91c0049c5bbecbdbfcb4b6f3d91fc5. 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/USA561336511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ab129a9c34b30565affef1d63f31313bc9f162d3fe6969e935881f60d13da4. 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/USA561336515.
The Golden Age of Light Music: Highdays and Holidays
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72bf0feb3825890b64b0707816663452c9c4953028cc1654bb110280024b093. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/CH6630551508.
In Party Mood (From "Housewives' Choice")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf115b2d9a5ad2d3f85f1da574b998af83be59e4f084ea579cd90f2fe860eef3c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GB8CG1150892.
At the Sign of the Swingin' Cymbal (From "Pick of the Pops")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5e82779e3fcb99b6c32aefbbe725d0c7644f440d2320275f218d21cd2cfb1b. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/GB8CG1300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050cba0390187223bced08b5c590cd7e737ceefdbf5bc904082b3ace5a200158. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/GB8CG1300137.
KETELBEY: Tangled Tunes (Ketelbey) (1913-1938)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafeb8a2f04c50a1f58790460ded3f9dbe74abab22897332ab207774c06d38ff5. 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/QMGXA1447671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81d11f6d56cafaa14ae92cbd7569090378b1d509e7e27b91b520e5785ef9f82. 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/QMGXA1447683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef7fdd42a20f077af561a35f335589f09663341cdae60a05cb69ead089fde04. 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/QMGXA1447684.