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 0x13044bcd32a4d814dd8eb25add7b32490a05e03779f4ee970040a05331440310. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d88b61e1-523f-4234-8645-db8c9727d3a9.json and https://artists.proofprofile.net/proofs/artist/d88b61e1-523f-4234-8645-db8c9727d3a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x81c85359e14a5ad4920dd7e72b04579b1ea6b59025b7853b0d4d5e2dd0d88e6d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/ZA31S1400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c653adf847100b458dc3936c21fc4a2ff8a19780f2fdaf65856c56c99dff892. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:54:33Z), 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/ZA31S1400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bfe8a77a3227a350c88e05f2b9a7749ab3c6da9f170578985bbdc341978198. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/ZA31S1400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf136d4abbd3863dc8c1ec2760b6899b1e9a2e7e9453e0699e971bda2b0a735. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:18:43Z), 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/ZA31S1400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f884da5d08dc97b4802951dbf09dab9536c94848c807731940a638511060a5. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:36:01Z), 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/ZA31S1400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6ec9864160d480b6d2ad224337c9758d370a55a557d9ab88477524b870e22b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:53:02Z), 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/ZA31S1400028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99bca6cc5a3292373a239f9d9d6638a1f1e1bb47c7ef5d4a0664e907a36b1d28. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ZA31S1400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x616656498433b5d55ee6ab934ce227f8c66f6e6be588cb7a205fd779557e14f0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ZA31S1400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c60692d4b7365d24163ef8d8cf01166e075ffbb2f6b4516e06db6d89464a673. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ZA31S1400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5d6f40fb006b4efd128f709e9f8bfc40bca99b317e8e4f4121f457742e7d56. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ZA31S1400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd29ad1b15611e7c7ae3d384068c01b815039aecbdf589cf61ce781910d5527. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ZA31S1400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcae93cd4d485be16e3645dcb1e3bec4d60733bb008763745376715c766ba69d. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:36:44Z), 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/ZA31S1400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8651fb7cd650da415c022391c983b1a081b83d5d458e54c9a129511c4cc0a97. Chain 2 (Bitcoin): anchored in block 957839 (2026-07-13T10:06:30Z), 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/ZA31S1400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68177f005f00b43df218d03c65626d60ea74bb95479277df86b7c22c3ca566b. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/ZA31S1400118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e9c69ae0b8e1293914ae7ae832ea9d286f21a72b4d45f894d30ce2c6973d2b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ZA31S1400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601ee05bcc4e7f0cea9192cf117df3ca948e5dc37a64986db29a94b27e829426. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ZA31S1400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c37039d38121f76e63a3e2725b56350a4676f43d7eb00ef2fd4203069469879. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ZA31S1400121.
Andante - Concerto for 2 Mandolins in G Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62a3bfd637cf64544429928b191bc628f52edb9b9e10d9b9783594490bc8a89. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ZA31S1400122.
Siciliano - Sonata for Flute and Harpsichord in E-Flat Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa671c7f2cb88b0c2ff6ceea098a7981c9489b09138db8fde63d8b48e27141998. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/ZA31S1400123.
Prelude No. 2 - The Well-Tempered Clavier Book 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf047c19f408372ee5b2a04d582bfa2b1d02e461da533261b8da0b3f027612f28. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/ZA31S1400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7e5bf7e8c2925719dbffeb3183ee55dbe5cbf450e16c4f1b6b98b949abdc63. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ZA31S1400125.
Prelude No. 1 - The Well-Tempered Clavier Book 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e1897deacb165ffe58b988618a5f50b540dec6f95e32b70c0aa426fd5072d5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:08:14Z), 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/ZA31S1400126.
Adagio - Adagio for Violin, Strings and Organ in G Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf4bdc6d049ba64f1fd25e9a93ff4975416ad964bdd3d30f7e3acf31e53d233. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ZA31S1400127.
Classical Music Nursery Rhymes (Volume 1)
Christmas Classics For Little Angels (Volume Three)
Playtime And Bedtime With Bach (Volume Ten)