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 0xa7c26b5af59536fe9bda549322ee69ee2005a1813ce6ada2af7354fc6bb93e85. 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/7b49fd09-121c-4c98-8cbe-85116f25b21c.json and https://artists.proofprofile.net/proofs/artist/7b49fd09-121c-4c98-8cbe-85116f25b21c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Phantom of the Opera (Instrumental Medley: Andrew Lloyd Webber) [feat. Kirk Trevor & the Slovak National Symphony Orchestra]
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 0xdfb95a66331804b2a2ae0255becef8e875157c0a569647821d7b442d3da55e95. 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/TCABI1217063.
The Prayer (Instrumental Version: David Foster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa9287997a2fb25868e7e4cf97919f06039051f88f472f042c128f2e5684634. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/TCABI1217064.
Romanza (Instrumental Version: M. Malavasi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504f8bdfc22591ba0c08c8b3f30ab598c7d8b6dfe327adbd208b890e488a221b. 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/TCABI1217065.
The Mission (Main Theme: Ennio Morricone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdffb86c16b783941bd53173bc0727b252ca005d23c9a58b2e0189b6afa2ddb4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCABI1217066.
The American President (Main Theme: Marc Shaiman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbf26a3368b032bed3d5ca07497ac698177b1b30778e12d4111fa603c1d8d6b. 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/TCABI1217067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16cce0a551d13f0d1bacd420ae372ade3ac738fe48452c679ab0964179bcc41. 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/TCABI1217077.
Nessun Dorma (From Turandot: Giacomo Puccini) [feat. Kirk Trevor & the Slovak National Symphony Orchestra]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8329187e40da31aae38ca6e094e3125f90093a01415a418a771b4a30ca4126. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCABI1217078.
O Mio Babbino Caro (From Gianni Schicchi: Giacomo Puccini) [feat. Kirk Trevor & the Slovak National Symphony Orchestra]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d7db447049c7e062e90288f9fc42c88c00c5d617ade962c43cd0db0b049af3. 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/TCABI1217080.
Flight of the Bumblebee (Nikolay Rimsky-Korsakov) [feat. Kirk Trevor & the Slovak National Symphony Orchestra]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e891f5447f1dcd98e25d2863640af11b3c70f8799af7d6b5142180b32ec4d69. 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/TCABI1217082.
Lascia Ch'io Pianga (From Rinaldo: George Frideric Handel)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8f28554c960e83a398605a2d7c6dbb7dbd4e4e82a327fd535d05f29bc44a4e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCABI1217084.
Paganini Rhapsody (On a Theme of Paganini: S. Rachmaninoff) [feat. Kirk Trevor & the Slovak National Symphony Orchestra]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605d72bd38a7bce92eece0d6b09133ded4b5f0183780e18625567598376cc051. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCABI1217086.
Adagio (For Organ and Strings: Tomaso Albinoni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02d8382bd92b43df1ded80cbc7652ad9cc707930f2742e97c7a99d171a62227. 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/TCABI1217090.
Summer (From the Four Seasons 3rd Mvt: Antonio Vivaldi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fe2674a24541e78150428b93230d2becf27ad43d40768ffbe7e2352c74d082. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCABI1217110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf335457e63a6779b862e27ae0ea8a7bf2d1f1445be6b57504f2b862d6077d030. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCABI1217111.
Meditation (From Thais: Jules Massenet) [feat. Kirk Trevor & the Slovak National Symphony Orchestra]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af0a105ac88c04b0626bbcb1575e4a9d5b4a1f5422468e2f3f1994fedd8c2ed. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/TCABI1217112.