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 0x722961534e6774e0e60315f8a2bf6c535afbfc9263e9c9211c9008a6a49219f0. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c30c6cd1-907b-47f0-ad06-f2021f2f7a35.json and https://artists.proofprofile.net/proofs/artist/c30c6cd1-907b-47f0-ad06-f2021f2f7a35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
P. Tchaikovsky: The Swan Lake, ballet (excerpts)
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 0x7523625e5aeee55173d21507657d3924f45f2323ec0881ca0e891cca20a0d2e6. 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/USA370691513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3081d95922e26e97a916ae045205099f817c8b0cc63f537fe4988dc4ecd5cca3. 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/USA370691515.
Act II. Waltz, Odetta's variations, the Dance of the small swans
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0589d07b20bdebf96c861687e2565381dd3aa2cdbf982688c8692ddea52cde. 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/USA370691517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a209f4eec9843d1b5297fb81d4d2f0eef36f5f45ea631600df90608684b2f0. 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/USA370691521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f3eeee0b6ff6631335f7ec18e2da7fdd414cf21765f4d9b8874f58f7c61d71. 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/USA370691522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8438ff5a5574db7f38880c607e050a1701bdd84a9d34c479a1a82d378c0a03. 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/USA370691523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85024dc69b788f8dc76adf7d25ca6cb894ff65646eef1948a47d367018ee57ab. 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/USA370691524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e3dc19ff85684d25e00c3f6e72f7c7b6ba892ddf3916f43cd2d051dc308dbf. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USA370691514.
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 0x4cd431e09faa16ada17a4c6571d0cefa5c08dffe6e24588a9fce119c72e2fd70. 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/USA370691516.
Act II. Adagio Of Odetta and Zigfrid, the Dance of three swans, the Final scene near the Lake
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2b897cc00a8628f939571aa40b68d20150941ab459a8830ec7ad1077498786. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USA370691518.
Act III. Variation of Odiliya, The Final of the third act
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeca7f600fbb66169947ccbe617cc7ee0d627ac5e5ba03ee72321fceb8e17ae0. 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/USA370691526.
Act IV. Scene near the Lake. Odetta and the swans. Variations of the Evil Genius and Zigfrid. Final scene.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68185074ac23997541353cc90df71ab980707a01d05a5b7bb3f4eda15aa26ed. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USA370691527.
P. Tchaikovsky: The Sleeping Beauty, ballet (excerpts)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd799b556e48a8f1d1ac300c605c32a8b36ee9f8c9f8a8c5a47c230f90a16ca2c. 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/USA370691570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a4270b64d494ac31124158c1dfd3ae84eeefc2e459b6bd85908e8e646b4e4d. 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/USA370691572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97328fcc2092318ce118183230588be8a42a28a9cbf80d81208986dc375286f7. 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/USA370691575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59ec9f6b42c83ce627d528b4e53f71a3ca8c3350eee804d6dcfbc2417bd5f2a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USA370691576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3c858d7627c092d2d113ab1c9bd2a8ccd43d9ce8812c4c922df353a9b3a195. 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/USA370691578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbab1983bf9b7ce7e94dfa982325fda81facffd19faec57ff9aeaec66803bd40. 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/USA370691580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca86b2c969ccac8143cc34eb7b27807e41066421abcd5e04efa2cfd6d1cd45c. 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/USA370691586.
Act III: №25.Pas de quatre / Cendrillon, Prince Fortune, L'Oiseau Bleu, La Princesse Florina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9011927729a6eda2f289e84d73d96ebfd4fd708fe5e5123c9d5e1c683da9d0. 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/USA370691590.
Act III: №28. Pas de deux / Aurore et Prince Desire / Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c52468943db708fc8852140be7046f7b9cf257f91d6811843ba7c147f926c6. 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/USA370691592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f15a7d9305d6f0554e0bd8690d60281b1d9a8ef94f9ae9d82c53e3bda428f3f. 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/USA370691593.
Prologue.№2 Scene dansante, №3 Pas de six
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4583d1b27f01ff3a617c1ad8dcfee722a938b1a4b24121e014484cdff3a5ee. 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/USA370691571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb583fbef01538bee8dd178056e1d60bcfebd7026877519abf7f87f47bf5b366f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USA370691573.
Act I Danse des demoiselles d'honneur et des pages
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d22f95a072b391c01ef1ad2ab7429e593c7633e6aabcb8f9febf8374aba837. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USA370691577.
Act II: Pas d'action (Scene d'Aurore et de Desire)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46def75dfacfebd8ff1406b7f5ab8f95f47144f014ce21233a16d8bcf1c128a. 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/USA370691579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2ee2901da9c0b2f33d28cc40134059cafa87cfd1f263641bd60b674bfb01fc. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USA370691581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741a99cfd0d2f547247479134efe8879dc69bf01d9e6616bc88f28c64c7b18bd. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USA370691584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34494aefd1e99278ef8c6bc096725a1e9bb6f696713adafde71779c9fddc79fc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USA370691587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde1b5510157f9e4c9ff3fdc82308e46eeab28d2f3dd0c746532b27d2a9f0369. 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/USA370691588.
Act III: №24. Pas de caractere (Le chat botte et la chatte blanche)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d741e3a74de77966b6c8935d4c4c46fbfe7a89e4bef1417ef9b8ec06b42fb4. 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/USA370691589.
Act III: №26. Pas de caractere / Chaperon Rouge et le Loup
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a30973711ff5defa06fd62cf6822267eeca2ef968cb5ff37fdbf7e37176d37f. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USA370691591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceee15095762096dc9f36982c38dfb441f34dd0757884c6fc5fd55188e447743. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USA370691594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea9e6541a086d1bb4917bc024afa1c92926d28071862226c01df3f5b4625df4. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USA370691595.