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 0xe06ba05a5e4eb728ec371d09c05c3a51f6f62315f42a0297734a77dfbb2e71ff. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/245280be-78c3-4c75-9d51-fd8bc7aaf128.json and https://artists.proofprofile.net/proofs/artist/245280be-78c3-4c75-9d51-fd8bc7aaf128.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 0x844f8868422dd11604747bc46e806ae778aea4b2a5e5061d02080a7412d6dd6d. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/MXF365636220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa903850e3318c699cb60da936adda6c4ad9855e94cd906ff3f9a9741175dba92. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/MXF365636225.
Banda de las Fuerzas Aéreas de los Estados Unidos de América
Clásicos Cubanos, Vol. 2 (Remasterizado)
Canciones Bolivianas para Coro y Orquesta | Homenaje a la Casa de la Moneda
Concierto Para Piano Y Orquesta: I Allegro Energico, II Poco Lento - Andante - Piu Mosso Agitato, III Allegro Con Fuoco: I Allegro Energico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c7c59f214278a02c8e14f95ea6aea86d54a78126bf4dc8e028c5372e9f9332. 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/MXF019502440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db39d42d0d82ef444e9809e7adea72a521ea292633547476cbfdd8bb2beabb5. 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/MXF016900343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9cc6763c5283fc386fce5f56d909e6e355d062c88379e5fbe68df621c4cb6d. 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/MXF019601981.
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 0x10f907b6595879704b0271c04bbe69625d705b086d2a24f54836a64fd330d33f. 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/MXF019502096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2bdc95d7d16b26088d50707f1c91bc672f567a0576f1bd9a3cbe41860a1a1b. 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/MXF018001125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0310221a70b103cfb478e3f020d9f7f9eeffc840b61872ee368bc85bc740b6. 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/MXF017000774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbda25986086d5873f438af47dad00ecfb42882e46efad2f2ae7fcebe81c08e. 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/MXF010000256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc666afebb5c6c9338596a56991d79ac9ad9835f13bd83fd378b83ef4377b59ab. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/MXF018001124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10ed1505ad8358a27b38489b783c8bc865d430e3bdccccd2c996dde350d1bab. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/MXF018001122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0857f83928fb1fe7bd8f6b952c81a4a6324f5f82fedc784ad80bf5742fe2bf31. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/MXF018001123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8394c2c2508185bb42e5b3100f112625c80c3be69c15aa44da4dc1cddd2d8d9. 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/ES18B1703328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6e021a7eb2bbdb52f8e6bdcf4ccf74ae1497839b80931a384438326b451234. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ES18B1703324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1706c7d17a545fdfc1ea75046a436621071bdce2eff2c0195f79e3d7d7f4ab2. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ES18B1703326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfeadaeea0fe619c48523a8d43877533de85972528c3a9a10f40549a6fb7483. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ES18B1703327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de4550c954f5faa44c6f0b3cf3b7f36f32a3e6d6741aa5ec1f6d91d8c529e20. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ES18B1703330.