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 0x8d8524da2bd5d2d5f18a880f597fc63e8fd0a7327748a76891a4d483096a76a2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5795773c-48ac-4998-8e6b-d213ec678d50.json and https://artists.proofprofile.net/proofs/artist/5795773c-48ac-4998-8e6b-d213ec678d50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart: Flute & Harp Concerto / Reinecke: Harp Concerto / Rodrigo: Concerto-Serenade
Debussy: La Mer; Prélude à L'après-midi d'un faune / Ravel: Daphnis & Chloé Suite No.2; Boléro
Brandenburg Concerto No. 2 in F Major, BWV 1047: I. [Allegro] - Recorded 1964
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 0x89eec4f70664ba8f6c6125a54ed6c3b411817216fb2d29b12dc5f26a67084cb6. 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/DEF056400081.
Brandenburg Concerto No. 2 in F Major, BWV 1047: II. Andante - Recorded 1964
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd387cd8afcc1a22b67f0383f1a4d77bd4d02a5b6d024e7942bde455013ac9a8d. 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/DEF056400082.
Brandenburg Concerto No. 2 in F Major, BWV 1047: I. [Allegro]
Bach, J.S.: Brandenburg Concertos Nos.1-3; Overture No.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89eec4f70664ba8f6c6125a54ed6c3b411817216fb2d29b12dc5f26a67084cb6. 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/DEF056400081.
Brandenburg Concerto No. 2 in F Major, BWV 1047: III. Allegro assai - Recorded 1964
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb79dd51df9a5923227a2b985e49f4b9d855abbc48d7be55f76a90e0262bf30a. 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/DEF056400083.
Brandenburg Concerto No. 4 in G Major, BWV 1049: I. Allegro - Recorded 1964
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2aa8f65d559d3e583eb43b58b2cc46b9bda942d818a7a64b8317ff78c6774f. 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/DEF056400051.
Brandenburg Concerto No. 4 in G Major, BWV 1049: II. Andante - Recorded 1964
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafeccf77117e5dc5e890d27a61af3fda4adbfc5fecef63f8d607f2ed8e5c41a6. 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/DEF056400052.
Brandenburg Concerto No. 5 in D Major, BWV 1050: I. Allegro - Recorded 1964
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x582e19772172120b284e452a973f86a1c1098a6f877c903807991e93ce04f8ac. 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/DEF056400061.
Brandenburg Concerto No. 2 in F Major, BWV 1047: III. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb79dd51df9a5923227a2b985e49f4b9d855abbc48d7be55f76a90e0262bf30a. 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/DEF056400083.
Orfeo ed Euridice, Wq. 30, Act II: Dance of the Blessed Spirits. Andante - Melody - Da capo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9860f90b7b800b7a9c66a87bda4f0bdb899940f18e3ab2e0d4b216ff6a7855. 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/DEF058300620.
Brandenburg Concerto No. 4 in G Major, BWV 1049: III. Presto - Recorded 1964
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13fde838b43436b32c1c0dc4f78d596624d852ff0b795fe58593a1458300827. 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/DEF056400053.
Brandenburg Concerto No. 5 in D Major, BWV 1050: II. Affetuoso - Recorded 1964
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05ce1f30eef21e6c79c740147b421d7a7711209b976d7bbb34376e03324567e. 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/DEF056400062.
Brandenburg Concerto No. 2 in F Major, BWV 1047: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd387cd8afcc1a22b67f0383f1a4d77bd4d02a5b6d024e7942bde455013ac9a8d. 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/DEF056400082.
Brandenburg Concerto No. 5 in D Major, BWV 1050: III. Allegro - Recorded 1964
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a2753e8bf81b4c76eefd536d72be621f78d700f3dbc6d9b1d818079b8b6309. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEF056400063.
Brandenburg Concerto No. 5 in D Major, BWV 1050: II. Affetuoso
Vivaldi: The Four Seasons; L'estro armonico / Bach: Brandenburg Concertos Nos.3 & 5; Suite No.3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca636081ba169c000d12dec79532cc216ae3f826658d2e7d5ac3eda12390a9ba. 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/DEF057803362.
"Allegro" - Berlin Philharmoniker plays Bach, Beethoven & Mozart
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb79dd51df9a5923227a2b985e49f4b9d855abbc48d7be55f76a90e0262bf30a. 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/DEF056400083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd387cd8afcc1a22b67f0383f1a4d77bd4d02a5b6d024e7942bde455013ac9a8d. 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/DEF056400082.
Brandenburg Concerto No. 5 in D Major, BWV 1050: I. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470457759b1cd3b585b148d9830d404a9bb12913f32e52bc23d6c19922e48048. 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/DEF057803361.
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
Brandenburg Concerto No. 5 in D Major, BWV 1050: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d76b17655d6b1a23db278a5b16213586f39f05348c3c81e8901fb8dde984335. 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/DEF057803363.