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 0xdfb9c3efd73b6b61a14273982fa235d6c9629f5b9af606b366d36d5fa4e08704. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e181a336-24a6-490c-8475-72aeff9c2817.json and https://artists.proofprofile.net/proofs/artist/e181a336-24a6-490c-8475-72aeff9c2817.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Drigo: Pas-de-deux du Corsaire: No. 1, Introduction (Moderato assai - Andante) [for Adolphe Adam's ballet]
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 0x201568618978225ac0aed471d339d73aad1d7ca701a32b9dffb238bd39bfbebe. 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/GBAYC0901516.
Adam & Drigo: Le Corsaire: Pas-de-deux - No. 2, Variation I (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2290e3496912ec17270d182fec5ac35e979dd0b619da231c0d067ee5f63aa33c. 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/GBAYC0901517.
Adam & Drigo: Le Corsaire: Pas-de-deux - No. 3, Variation 2 (Allegro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5539e4fe2752d683a7a4538eba010b4ae225645b32fdbe4dd7610801e4a7271. 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/GBAYC0901518.
Adam & Drigo: Le Corsaire: Pas-de-deux - No. 4, Coda (Allegro moderato)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55454f53daab621e4a34fb96dbb78f806ba77ed1c5287e786b39ed7a0393ec9. 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/GBAYC0901519.
Giselle (1996 Digital Remaster), Act I, No.5, Peasant pas de deux (Burgmuller): Entrance
Terence Kern/London Festival Ballet Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a847f6bded15c5f5e1d8997fe3c748adec0bbab1504eddfdd1f4db149192a8. 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/GBAYC0902138.
Giselle (1996 Digital Remaster), Act I, No.5, Peasant pas de deux (Burgmuller): Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea720fd03b0bc131826903c7e0c35dbb669e1132bee7465229bda8f8c36d719. 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/GBAYC0902139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912b5d1a0f39cfed76875fa39b28b0bda2ae1fd949f96f14955ee224f1d9e71a. 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/GBAYC0902140.
Adam: Giselle, Act 1: No. 5 Variation II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9942b2212e22c813c62a887942b92ac24f0b61ad5f1253b94d37d34ab4fd66ad. 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/GBAYC0902141.
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
Giselle (1996 Digital Remaster), Act I, No.5, Peasant pas de deux (Burgmuller): Variation III
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a69ddcf1c2bcad0adc136baaf2ad1a076ded842c26743267243cc6f16003cd5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBAYC0902142.
Adam: Giselle, Act 2: No. 15 Pas de deux (Giselle & Albrecht)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb0fd7379530be78716ec3ad2052c779a21793fa6632719a26d5933432d84c2. 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/GBAYC0902169.
Giselle (1996 Digital Remaster), Act II, No.15: Albrecht's Variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe760fb8d44935e91baf67066ae6247fc3a22c4516ec3b1f2c3c6bc8eec8f5255. 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/GBAYC0902170.
Giselle (1996 Digital Remaster), Act II, No.15: Giselle's Variation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0a36d57fd01470b2308522cb0e3febcf88fe89dd10b0528fcd91d75b10b0ac. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBAYC0902171.
Giselle (1996 Digital Remaster), Act II, No.15: Coda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ef7036cbd4a5258c10e5d0304088e4c38a9c0eb3dad829eb9d9b19aa304cd4. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GBAYC0902172.