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 0xbc8ca6eea6f8f54c5e691a87b74549437d42426193135b8cf1add3063a4c3c54. 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/6c6c01f8-3b60-4326-92ac-d4a000b0ac24.json and https://artists.proofprofile.net/proofs/artist/6c6c01f8-3b60-4326-92ac-d4a000b0ac24.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 0xc3f3873dbe0a704d5c51f2f49a102382b340ed9ad53d3d32ec7f3d47ec6502bf. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/GBBGL2003531.
The Split (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381fcc29562ecfed65ea6762e1e8b92987ef459e3c27ede2b86880d6b37d6cdd. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/GBAJC2200125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d02126d2bb61ebed16ff58382616bfe888895c40e7d4b373bc945937fee255e. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBAJC2200127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1168e760bfaeb02f17ec3cb3e8e93788ccc12d474f78afad7a81a2ca1b6dfa. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GBAJC2200128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd7b4e538876674664f74411fff4f057977bba0b04ad915ce9a521e1a3ededc4. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/GBAJC2200129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfca7dd7b46c3641d36c09b6dc784f9c2cb9fc210cd658a7ea24771df750f47b. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/GBAJC2200130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad2edee42274ef9072dea0c973dba1e829a7f6ad3c554eb17d4c44b5476357d. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/GBAJC2200132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabadef80edd0a76d184397395bd2b570ad9dcabceca948dc8bdeb4f3c8ae8470. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GBAJC2200133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247c0068ca2c0f729635f3da3f5af721be716a9a3f27994f0371aad708806db4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBAJC2200136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4150c37f9e0fa7e34312fe73b8b51eebbb2650d8117af81114b5e6c6fded43. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/GBAJC2200137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6012ffebec1a927b960b3f047ade2ab031d716627399592145f4b1b1d7e2474e. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GBAJC2200141.
The City of Prague Philharmonic Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e21a4be1febfcf0350ba9e89f29847e4b2d45995d40c08420cc838eb71d434e. 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/GBAJC1600072.
Snow White - From "Snow White and the Huntsman"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8c0356858ff6b7908d9af983e9aee6e592e9a2647611dcc688fa8e4499f152. 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/GBAJC1300049.
Dance of the Cuckoos - From "Laurel and Hardy"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a124697f8bf15b6deb92037945673d18a885e02d2f4954b602ab65b74f77380. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/GBAJC1300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f3f57548873adf473cec2740b02211156458b8a712618d99c84bd6ef20e2e3. 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/GBAJC1100365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140f41a712858196f3dbfd7680630b2dfbc6149f3147d764f89f50c09ae020cb. 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/GBAJC1300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa718df727d59941d68017931803fc211f778658452921cca1ed5b5248ac736fd. Chain 2 (Bitcoin): anchored in block 960352 (2026-07-31T05:48:30Z), 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/GBAJC0900539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bdf0a25ab76ce2b899021a46923698c3ccfad9f6fa6c14d275994fbb29f5b9. 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/GBAJC0900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2d55f7af0d63e566a12f0f854cec6683381c7e586aaf028403c578bf0a661d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBAJC0800131.
Rey's Theme - From "Star Wars: The Force Awakens"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0a88ec70c1b815e4aa17829217e6e6b765ad2b407f0d02acbc51e44125bcba. 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/GBAJC1600145.
The Hunger Games - From "The Hunger Games"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b5659d1c8b58a8177a70ded178cb9deac897699435b7233f85eb985ed640aa. 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/GBAJC1600056.
Horn of Plenty - From "The Hunger Games"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc163dc9e35dc901ab7b554b33a283270db4361d87a61cfaeba38af0305977ee. 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/GBAJC1600057.
Rue's Farewell - From “The Hunger Games”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e720d3d473acd2116f1f232c48594c157277890092e57c1e6967023c51e714. 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/GBAJC1300041.
Tenuous Winners/ Returning Home - From "The Hunger Games"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3e962f002bc2ba05417ac7f0c6a5c105e0ab911817a97eb1d3c7e555de5998. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAJC1600058.
The Tour - From "The Hunger Games: Catching Fire"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4141eba2ae8b95135de45a48c393bd6fefa685f4e3dd1cd13169640e6c194c50. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAJC1600059.