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 0xdcca5550afbffb978b2720a69332a404d4d4c40be51f78b57509f4ea29ce4a72. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/07dbdd2f-a6f6-44c1-9e9b-87fc11a2f15c.json and https://artists.proofprofile.net/proofs/artist/07dbdd2f-a6f6-44c1-9e9b-87fc11a2f15c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart & Stravinsky: Works for Violin & Piano
Saint-Saëns: Le carnaval des animaux, R 125: VII. Aquarium
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 0x8d8a48faf0c88fe15fc278294c4ef7f1b176b287261cba6d38c3640d375a882a. 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/GBAYC0302205.
Saint-Saëns: Le carnaval des animaux, R 125: I. Introduction et marche royale du lion
Saint-Saëns: Le carnaval des animaux, Septuor & Fantaisie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1461e087536552b81bccae18e31291bc72078627e23fc14090a4c20238c32871. 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/GBAYC0302199.
Saint-Saëns: Le carnaval des animaux, R 125: II. Poules et coqs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85935c68052da6150fdaac37d4e35d9cc47e61e2d4c1f73518d840d882607ecb. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GBAYC0302200.
Saint-Saëns: Le carnaval des animaux, R 125: IV. Tortues
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa521ffbf09fe4eb19a029938d2d5be4e4469727a0e33a1377a2ebc49683e7c11. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/GBAYC0302202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8a48faf0c88fe15fc278294c4ef7f1b176b287261cba6d38c3640d375a882a. 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/GBAYC0302205.
Saint-Saëns: Le carnaval des animaux, R 125: VIII. Personnages à longues oreilles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de576175c69b5b8ae068264b9f7f635324f3eea628eb953ea44b96ebf9b91f3. 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/GBAYC0302206.
Saint-Saëns: Le carnaval des animaux, R 125: X. Volière
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f0cf9c7f9e29809bf4471d81ce73f1cdefe033efd8fc8a00d89f14c34efc8b. 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/GBAYC0302208.
Saint-Saëns: Le carnaval des animaux, R 125: XI. Pianistes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc4c63242b7c3189edef6f8b83ed14ca2add1ad129ef1edd695a22d34b56c79. 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/GBAYC0302209.
Saint-Saëns: Le carnaval des animaux, R 125: XII. Fossiles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080eef8afefee1db21994f02b66a7d7133c8b7933b184ec5eebc94ed957115c3. 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/GBAYC0302210.
Saint-Saëns: Le carnaval des animaux, R 125: XIV. Finale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23ed7717c7262e1a973a67403073d48653ee0d0c961e102f52b5956cd8219f6. 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/GBAYC0302212.
Saint-Saëns: Septet in E-Flat Major, Op. 65: III. Intermède
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc186169ea57ba33b0250c8f63110a87a917a7cc813f54604547678b4e40729. 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/GBAYC0302219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85935c68052da6150fdaac37d4e35d9cc47e61e2d4c1f73518d840d882607ecb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBAYC0302200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de576175c69b5b8ae068264b9f7f635324f3eea628eb953ea44b96ebf9b91f3. 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/GBAYC0302206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080eef8afefee1db21994f02b66a7d7133c8b7933b184ec5eebc94ed957115c3. 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/GBAYC0302210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23ed7717c7262e1a973a67403073d48653ee0d0c961e102f52b5956cd8219f6. 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/GBAYC0302212.
Mozart: Concerto for Flute & Harp - Beethoven, Vivaldi, Bach, Telemann
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f0cf9c7f9e29809bf4471d81ce73f1cdefe033efd8fc8a00d89f14c34efc8b. 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/GBAYC0302208.
Saint-Saëns: Septet in E-Flat Major, Op. 65: I. Préambule
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602b8ad8ef4177beb24f14353cdd077a76a897c9046fc71ce749297fe3076c6f. 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/GBAYC0302217.
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
Saint-Saëns: Septet in E-Flat Major, Op. 65: II. Menuet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7e6c86316a94dbfd6dc7c24f95779e01e74ae6111ce895ce7fcef93819ffc9. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBAYC0302218.
Saint-Saëns: Septet in E-Flat Major, Op. 65: IV. Gavotte et Finale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adb89413f4ebb7b43453f25df84ef90c57fd7e352edb870cf2c9d0727725528. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/GBAYC0302220.