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 0x6925004cf29cbe8e4cec087652186fbdb06180e3920961288d86a764a8e45938. 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/9709fb10-e324-4ce5-b436-7fdfa1a23e45.json and https://artists.proofprofile.net/proofs/artist/9709fb10-e324-4ce5-b436-7fdfa1a23e45.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bliss: Miracle in the Gorbals / Discourse for Orchestra
Die Walkure, Act III: Ride of the Valkyries
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 0x4df5f7bb5c81abf51046906896f8bad1049f9ba828d8ed201b8691da8b02405c. 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/HKI199332102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0d944d5afeaec52f2bf3ec35665129d06e275d3081f042b8554af51a11a3a3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/HKI199283025.
The Firebird Suite (1919 version): Firebird Suite: King Kastchei's Infernal Dance (1919 version)
Belgian Radio and Television Philharmonic Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa126d7136c22d6845dc9590d3a8776905fc08b19e324bb1c97e5b97053e9a8a9. 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/HKI199709007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368f0e5009efec8849c6882cc41ebbe00c7eefe5db5ed2aac6cc69dc06e2e490. 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/HKI199714805.
Pini di Roma (Pines of Rome): IV. Pines of the Appian Way
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee239b34add8ad9b255ca9a6f033bea0bd1986d8b7159e06c4f4f715b8356ab. 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/HKI199292512.
Feste romane (Roman Festivals): IV. Epiphany
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850c608ed75464708d2f05f3064cae5c70115d97dfdb8279b737326b2afee2bc. 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/HKI199292504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1161f7e8b216c7b71739db3f829e2d750d6857c5a77a67698ed037080dfcc5. 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/HKI199297104.
Le sacre du printemps (The Rite of Spring): Part 2: The Sacrifice (excerpt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b416814c15942a89068e8defd0892c14676f3749ddf4a2d8d1d51a3ffedf744. 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/HKI199709018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411eedf9e009d1aa4c5c6965268596b9047edcb4c54e1d2bc5d1393787c8884f. 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/HKI199238801.
Danzas fantasticas (Fantastic Dances), Op. 22: III. Orgia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eef7ecebf2f7be9895276df377fb71f2b3e562fe778f53020c0e3df4120f084. 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/HKI190143906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157deb0112e37f093b4ac28ad0041b61d14581f56c60739c0f27ab08ec3b9f5f. 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/HKI199263006.
Gotterdammerung, Act III: Siegfried's Death and Funeral March
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c560d8f806f481a56a4f3fe84aa0cbfeb4644075084e90b017f455205ebd67. 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/HKI199332106.
Bilder einer Ausstellung: X. The Great Gate of Kiev
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a5bf03e2b1398a99898139686fa76211cdbfb9e0aefc00b77ff48383d0ab83. 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/HKI199940615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715e2ae41131374786ed2f168223627d9105cdcabe5013c31a7254047ae7aa11. 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/HKI199238224.
1812 Festival Overture, Op. 49: 1812 Overture, Op. 49: Finale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70579bd24cc99190719092882c218254158822a8fe14f933e1e1e14fd30dbd5. 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/HKI199238214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01747d012a97ef468573fca13b2e752ff97b976f42da15f4db3c8ca92fdf3090. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/HKI199707613.
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
Varese: Orchestral Works, Vol. 2 - Ameriques / Equatorial / Nocturnal / Ionisation
Polish National Radio Symphony Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39f427ed612a17cccf77ad54561e06aaa4b7ec59897842296d163e60912cc8c. 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/HKI190703801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d435a9de376c1cb38e494d34bb8910d60e47bb3d7bdfc4eac6320eab94bc05f. 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/HKI190703809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd79193d3b335de7d2caa5da7ec223fc7cb5b2c8fc729d466654b4d6e8957af. 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/HKI190703802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7267a04917e39c723c1d3ffa6c72ba635a70223c4ef70d6bb2786c87de77d5ed. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/HKI190703803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f4133746cd0fe3bd864d63c576e8c82ca84c2f506b8cca19936250eeb8cf23. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/HKI190703806.
Piano Concerto in C-Sharp Minor, Op. 45: III. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcad560ee2399257f0ba0bb11da42a1228fc00f2aef38e6fbc0de760aec5844. 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/HKI190308703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac3e069e10705729f09ee7206ebc7d3cda3b8f598a6810869369db1edd44fc3. 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/DEE079402357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2d857334a828d45f53a555e7c5542df090c6ceb7f753794dc48f7c1ac2f439. 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/USAT50426157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8590702c3e923da6a50852121910a81c557a390a0b80f93eb5f42b83a4983d. 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/USAT50426158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237d57192b082f75e4f96350ce0db7bf2da8a8f14c1e875867525162f2922c07. 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/USAT50426160.