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 0xb51ac5c2e6af2fcb59118b30b3447d9cd9d767f755baff6d4c84e115c57ea70d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15bcd58a-06f7-436b-9c76-742696106dd9.json and https://artists.proofprofile.net/proofs/artist/15bcd58a-06f7-436b-9c76-742696106dd9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Orphee et Eurydice, Act II: Dance of the Blessed Spirits (arr. D. Sosin for flute and harp): Orfeo ed Euridice, Act II: Dance of the Blessed Spirits (arr. for flute and harp)
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 0x360bfd0578b5e1517644d835a21aaf5690d8bb7b8763e9ce53a1ceaa4beac043. 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/HKI199717601.
Sicilienne, Op. 78 (arr. for flute and harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412999ef054a3c434aad6b55e1c04f1c66aa10bd10e687b2c72d2db3a7ffea79. 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/HKI199717602.
Berceuse, Op. 16 (arr. for flute and harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16bf9cc6764a5be1179b402fe655d4ecef3d5a3742eae6d5a6721434bbbc8cf. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HKI199717603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdc3e969230d980ff6cae5ff8ad334369f03fcc3b609a963da9e5c4c532e0f2. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/HKI199717604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d954119ab6dd4bdd653430f8029b7c802cf6c5b92abecfef3cd6e9fddeaa1ef. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/HKI199717605.
2 Arabesques: No. 1 in E Major (arr. J. Loman): Arabesque No. 1 (arr. for flute and harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2ae1a40b040984cde46d5a3a42abd4533de54a2f861146a1b4d6afcbcb212e. 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/HKI199717606.
3 Gymnopedies (arr. D. Sosin): Gymnopedie No. 1 (arr. for flute and harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7beee711cf373bcaff89fcad884c69f6e72cb239c4cd1a5e7134f5b8800e11c8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKI199717607.
3 Gymnopedies (arr. D. Sosin): Gymnopedie No. 3 (arr. for flute and harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf380bf6c7bd280d666732aa864489228a8a7aa1cb3c73e7eb6b9a18888e9ff3. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKI199717609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d62e6ec7a6f2a3f3f34a4d17c2722fb05397c326068ed4168b6ee3a61c364c8. 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/HKI199717610.
Flute Sonata in E-Flat Major, BWV 1031: II. Siciliano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad70d8872f01100403c51aad6401a2bfb6a75d15b636aef54f0f64e0f069e82. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKI199717611.
Carmen, Act III: Entr'acte (arr. D. Sosin): Carmen: Entr'acte to Act III (arr. for flute and harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b450d9e21e5cb157bcd2c235e89933ac5a6b84392183fe2ecea21607d73d67. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/HKI199717612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46844153c9faf106dd6ea01bdbbaeea5995e51cfbf3ef96a6a7e25f51286d7c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/HKI199717613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69c94e1cd436d5042cea9061c4bd8f0ac49a8a4287d24ca1af7fac7b59314a4. 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/HKI199717614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe8e64320949a0ac33a491d01e7d761bbecf85406e8ff2440d4546eec379cf5. 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/HKI199717615.
Peer Gynt Suite No. 2, Op. 55: Solveig's Song
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dde542beca88ed8bacb1ae4e8e43eefd9804efd8411132b3cc1f22deef0dcfb. 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/HKI199717616.
String Quintet in E Major, Op. 11, No. 5 (G. 275): III. Minuetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46892d9c0f0946deb9c5a637ff4411e6532bddef6eafeddc1df08492b4334f7. 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/HKI199717618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e083c27bd84a61e462fe95cd28d403b2c7e21494246ee4bdb96d84713d1640. 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/HKI199717619.
Orphee et Eurydice, Act II, Dance of the Blessed Spirits, Orfeo ed Euridice, Act II: Orfeo ed Euridice, Act II: Dance of the Blessed Spirits (arr. for flute and harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360bfd0578b5e1517644d835a21aaf5690d8bb7b8763e9ce53a1ceaa4beac043. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKI199717601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412999ef054a3c434aad6b55e1c04f1c66aa10bd10e687b2c72d2db3a7ffea79. 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/HKI199717602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16bf9cc6764a5be1179b402fe655d4ecef3d5a3742eae6d5a6721434bbbc8cf. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/HKI199717603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdc3e969230d980ff6cae5ff8ad334369f03fcc3b609a963da9e5c4c532e0f2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/HKI199717604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d954119ab6dd4bdd653430f8029b7c802cf6c5b92abecfef3cd6e9fddeaa1ef. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKI199717605.
2 Arabesques, No. 1 in E Major: Arabesque No. 1 (arr. for flute and harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2ae1a40b040984cde46d5a3a42abd4533de54a2f861146a1b4d6afcbcb212e. 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/HKI199717606.
3 Gymnopedies: Gymnopedie No. 1 (arr. for flute and harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7beee711cf373bcaff89fcad884c69f6e72cb239c4cd1a5e7134f5b8800e11c8. 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/HKI199717607.
3 Gymnopedies: Gymnopedie No. 3 (arr. for flute and harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf380bf6c7bd280d666732aa864489228a8a7aa1cb3c73e7eb6b9a18888e9ff3. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/HKI199717609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d62e6ec7a6f2a3f3f34a4d17c2722fb05397c326068ed4168b6ee3a61c364c8. 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/HKI199717610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad70d8872f01100403c51aad6401a2bfb6a75d15b636aef54f0f64e0f069e82. 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/HKI199717611.
Carmen, Act III, Entr'acte, Carmen: Carmen: Entr'acte to Act III (arr. for flute and harp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b450d9e21e5cb157bcd2c235e89933ac5a6b84392183fe2ecea21607d73d67. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKI199717612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46844153c9faf106dd6ea01bdbbaeea5995e51cfbf3ef96a6a7e25f51286d7c. 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/HKI199717613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69c94e1cd436d5042cea9061c4bd8f0ac49a8a4287d24ca1af7fac7b59314a4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKI199717614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe8e64320949a0ac33a491d01e7d761bbecf85406e8ff2440d4546eec379cf5. 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/HKI199717615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dde542beca88ed8bacb1ae4e8e43eefd9804efd8411132b3cc1f22deef0dcfb. 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/HKI199717616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46892d9c0f0946deb9c5a637ff4411e6532bddef6eafeddc1df08492b4334f7. 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/HKI199717618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e083c27bd84a61e462fe95cd28d403b2c7e21494246ee4bdb96d84713d1640. 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/HKI199717619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d62e6ec7a6f2a3f3f34a4d17c2722fb05397c326068ed4168b6ee3a61c364c8. 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/HKI199717610.