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 0x58b7c6edb71fc02ba0d9034c6da650f0c88d33dc7f5d92b673a3b376984a3f08. Chain 2 (Bitcoin): anchored in block 953782 (2026-06-15T12:13:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d39aeabc-4399-4ee3-878a-4e2edb9c80a5.json and https://artists.proofprofile.net/proofs/artist/d39aeabc-4399-4ee3-878a-4e2edb9c80a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lalo: Symphonie espagnole & Saint-Saens: Violin Concerto No. 3
Symphonie Espagnole Op. 21: I. Allegro non troppo
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 0x08a0c7d5b78eb73fe69134e9cc42a558581d45a37111512de3f24d6f21e92c6f. 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/USSJ10916334.
Symphonie Espagnole Op. 21: V. Rondo - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6122604ff8626be0fed7a0905dac92e781881966212751b440a64045451cc1. 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/USSJ10916338.
Symphonie Espagnole Op. 21: II. Scherzando - Allegro molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bef0f1358ba2b18d6c27da2b3c908edd1efe9458c1fba016124bc9a15acd3df. 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/USSJ10916335.
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 0x9af7e70d27a0e2549b12a10a0249058a097f25012d0d991f09d176833d80b7ee. 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/USSJ10916337.
Vocalise - Chee Yun : Violin Show Pieces
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab9e1892e173c7d06c2226e81841dfb6694faa6eb13515c91939c0bc08c9867. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZEKE1811123.
The Ultimate Most Relaxing Classics for Kids In the Universe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b04078e0bbb35363b7408feaead5c0aaf11c2c2c1186aebd7bde0328768777. 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/USSJ10700257.
Violin Concerto No. 3, Andantino Quasi Allegretto
The Most Relaxing Violin Music In the Universe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f808a3cd8a1021bcd95aeae0ac22895e22be90a188a6df5729e128885703c1b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USSJ10500214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6442cb0b578a589222a7a6e1a19e88a2cdaa339adf1ddbdb10c3b7b9b8f9de2f. 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/USSJ10500218.
Violin Sonata in a Major, III. Recitativo-Fantasia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab534a9df7e5509482946383cad8e8f17bc4616da3b52b98897269246a1ae4b. 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/USSJ10500219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12621b5c428e63bc1c69ebff8e573687de2ef09364389121b7b0fad7ea70dded. 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/USSJ10500228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1da1cdf22cfa4bec79ee1c0f81ea162d538056125ffc26fb416cada8808a5d. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USSJ10500213.
The Ultimate Most Relaxing Music for Strings In the Universe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x357d5e76c516ad7762c48be6d21bcbba43f09442bcb75e2957c91d38972d3632. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USSJ10700204.
More of the Most Relaxing Classical Music in the Universe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24564d8c969d908159704cde68e5964f11fe6a1d56a91df6dce3ca77c57e79aa. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/USSJ17000755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94baad3ad8b4ede10c62455acdfaeed7abea2263e9280e19c8ea9c5804c5a8c8. 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/USSJ10500217.
Violin Sonata, II. Intermede-Fantastique Et Leger
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2615e15bd25ca26033b4cc238d2d8080f7623ff648dc84c40fbabc7f6ab5e5ef. 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/USSJ10500222.
Somewhere from West Side Story, Suite for Violin and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83fa75e9c2904d389583d23c6bd823f716ee3f2b1e07db3547bfed374e284f35. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/USSJ10500224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717ee63d6fbfdcb71644c2ce42f168ff8fc2200e249fdaa66db3cd381e79799f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USSJ10500227.