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 0x1f93f91e8ebc562be13a1a44df68a125d83aef5a624a32718fa91158ec9f1b18. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/567c4f3d-7420-46d3-b0d9-9b4e1f3e420a.json and https://artists.proofprofile.net/proofs/artist/567c4f3d-7420-46d3-b0d9-9b4e1f3e420a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Strauss: Piano Quartet, Op. 13 - Metamorphosen for String Septet (Live)
Valzer sul nome Bach: No. 1, Circus-Valzer
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 0xc776c7c4450d0786e3d66c691b1f2757e743105d0b3cb767fba44dea6a7e0b3e. 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/FR50X2074604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1062d7db8decb7e591fddf7885fef19abf8f0932cb03f208f04e20a64aa2761e. 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/FR50X2074606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30925cdb87c484f7ff1e19a80de0cd9179a7292b287a675c04f3d812196e825c. 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/FR50X2074607.
Trio for Cello, Clarinet and Piano: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038dee3e6486ea663471df169b1729cd9437ba3028faabe6a2ebfe3835e8a448. 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/FR50X2074613.
Over the Rainbow (From "The Wizard of Oz")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef6825f69ce63c36db7f8ee1d4981ec64dd2175bdbcb53d935fac94aece82b6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAYC2200164.
Dance of the Knights (From "Romeo and Juliet", Op. 64)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c596c2f6c7fc77f8b3cde84074591dca1257f190092984605680ad5b2b3961c. 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/GBAYC2200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b331bd70b814cf6a7a74f286acf176f91e00088530b63a025ecf3d43757e94. 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/GBAYC2200161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c283414e7ad892d23660fc2cad39a6c8fae7eabfc399096b2a4d634c8d9ae12. 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/GBAYC2200167.
Williams: Main Theme (From "Schindler's List")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288c4551be179ad1c0d1eb99c355534eb498ecfd91142808692b15a133081fb6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC2200165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59fc14885cf5e3d4db2775ff5facc5cb401f95e2c1d72e9366d57f82267e0a8c. 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/GBAYC2200168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a98052d2576a18a5a773089f3adc0da9f96a433d06774fa4b04497ed037882c. 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/GBAYC2200162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2437015921405e122200e1fdf7c940b878bf6b64367c980e8d3d653b9631b31. 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/GBAYC2200157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b1cec7378a86f5da14b543d177f63ec0892e7aca17c21bc08a054f8dff5baa. 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/GBAYC2200169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5818d739c794e457214d593630ebc676c931b41146fde0c957eb7595494d8f0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC2200166.
Villa-Lobos: Bachianas brasileiras No. 5, W389: I. Ária. Cantilena
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbead764136533cc2ec01c14073d2c4b8da27738d97d232a3240e8446b7c24d1b. 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/GBAYC2200173.
Slavonic Dances, Op. 72, B. 147: No. 2 in E Minor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859a1fe5b378f729227638d9fa032a5e420b98e6aacd1dda45d07b15f49b1f52. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBAYC2200170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfebc1eb68c6ebe57bcdf3bd2a576f260365a50817ec954f3f5e0872e745b0a. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GBAYC2200156.
In the Hall of the Mountain King (From "Peer Gynt", Op. 23)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f55031ab14bfa97d8af952b4e53f9a5c32801bb9f83fb3eec88a769a19442c3. 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/GBAYC2200175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe458a4294bd82518d4c3a9d89dac247178ded92efbcdd793c8b07044d5145ee3. 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/GBAYC2200159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a847fd78eb5faa21352cdbd82cd34442749bfa4569a1b10e5bb3b4b7471f90. 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/GBAYC2200163.
Symphony No. 9 in E Minor, Op. 95, B. 178 "From the New World": II. Poco adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1f8c30e1972e67a70776ec8ab64061a975f8ed0980e43c894284c3a586d1a0. 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/GBAYC2200158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30446e9a65e4b861c3e27d23b70ff527ad5daf33bb77972164758da90848fdab. 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/GBAYC2200171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca04b25ff14eb5e37b50d443e5f1344498277356f1cae6300b480f74216fd853. 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/GBAYC2200172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02250ded9f061dbc43d53cc0b7091a44d781ed0cb3058b2186baccc92bcac78f. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBAYC2200174.
Jeunes talents 25 ans (Reconnue d'utilité publique)
Danzi: Ouverture, Cello Concerto & Piano Concerto
Overture in D Major, P. 228: II. Andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d8c4407ba3af5ec0bd6b2d4d7d4a535749a1e2a141a1fc509832272bbb59a1. 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/CH0011700037.
Rita Strohl: Volume 2, Musique de chambre
Grande Fantaisie-Quintette: I. Moderato maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4c9f46e664da4f1f8476b6d40ce3be2e8e3b9d4faeff4c5da8c6ffbadf973e. 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/FXR722300153.
Premier Trio en sol mineur: I. Les adieux et le départ. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceabed2b0abbbc933821152463e4fc25e591729ce223e5859d1258cbb122d06b. 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/FXR722300172.
Quatuor pour violon, alto, violoncelle et piano: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ba64aba94596199881e4e7a9d036c1143045b57e57608225283c329c1bd774. 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/FXR722300165.
Premier Trio en sol mineur: II. Prière. Adagio cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74cf4a4730f667a6abb388a4cd516047d1f295611f70767a4ee6e4399393ebf. 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/FXR722300173.
Grande Fantaisie-Quintette: III. Intermezzo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581cf16c8b82034d80ca3af7c168f9a7ee75ef57bf7f07b968ee51de6d577ad1. 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/FXR722300155.
Solitude, rêverie pour piano et violoncelle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396b3eba67f849a5fde771d8b761060f45831a97738ea035daea72f8bb36e040. 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/FXR722300171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba77f3e991d55c88572bb90b3e46ceaf4b53729180ba2023d68862284efd36c. 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/FXR722300162.
Arlequin et Colombine: I. Allegretto quasi andantino
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605b0e584fee5fc99a9061566fdd6b72b6b85ae226bbccdb45a4db3e38e71d25. 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/FXR722300161.
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
Queen Elisabeth Competition - Cello 2017 (Live)
Cello Concerto No. 1 in C Major, Hob. VIIb:1: I. Moderato - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51db3c9eae45372019833878eb070445fb6304d53e062d3d068b5f642ca6cc3. 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/BEF641700301.
Cello Concerto No. 1 in C Major, Hob. VIIb:1: III. Allegro molto - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b50ebe4177903b5e6bf207f39643b433706a9736b4370c194e7a0039f6e48c9. 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/BEF641700303.