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 0x183d9e868bf2de306f0d2706d18f7fe056ae6cb6166e5d968eabd25555bee8c8. 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/825d6411-ac93-4cc7-ac74-18ad2271776c.json and https://artists.proofprofile.net/proofs/artist/825d6411-ac93-4cc7-ac74-18ad2271776c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Selección de Música Clásica Para Dormir, Vol. 1
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 0x6419f07dc1796def699ceb24c3769fab9ded38cd38c6914433a9b68106fc0bf8. 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/USRDG0111929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac41562783057bd5b293540dda07b2feb559261686322138f08b05948714dc2a. 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/USRDG0210756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a4bb590d0e1fd32d15e062e05a9cf2e06c922cd69f770242bd7d1ad47306da. 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/USRDG0111732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2adb51dd6a97db854b2a65bfc9133a918d3526d53ed4a0e3989136785ecc9b1. 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/USRDG0225625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89841fea80651a2f52da310ca37bdb28663ce2ac1f1c6bd4b69ae9639aadb53. 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/USRDG0910072.
Christmas Oratorio, BWV 248 Part 2: I. Sinfonia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0223f124f8cd4668da05c82d4ee2878c06dd2c5e585bbd7019536a84714ec5. 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/USRDG0112031.
Triple Concierto en Do Mayor, Op. 56: II. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99c18f9e7f88df3d67151e7b4570766bc33fcf99d5d30c90e91a41aefd93f4d. 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/USRDG0112567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965c5e4ec430a04f18918e57dc5346165520efaa088953b97d174a114cd1c80c. 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/USRDG0226571.
Concierto para Piano No. 21 en Do Mayor, KV 467: II. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82dba27feec57bbd7c2b6596f761296eb892f5f6d2b7b4be4360251bc42d110. 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/USRDG0222769.
Sonata para Piano No. 16 en Do Mayor, KV 545: II Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7235d1a24b57ff14ee339413e5053a741797e6fd95ae68280a2304fb36a13366. 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/USRDG0510433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5277d8a4804df35417a223e90a5e25011245b1a7f7af7e270c10d4fe6af0d8a5. 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/USRDG1010201.
Variaciones Goldberg, BWV 988: XXII. Alla Breve
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005b079f76c2ffaf057330c5da30d90637006180bf9ee38bd060d6f24c1f0c6b. 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/USRDG0218500.
Sinfonia No. 7 en La Mayor, Op. 92: II. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecf8725d52191ae7fcb64f7097b960634c1d3ffccaf55117d0db0460cf7d7b2. 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/USRDG0110040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e107951c2e2260481950858ee6ce2abae42b6cb5e8049cd48bf7c3e34aa89d. 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/USRDG0223702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1cb19c555c203cd1ee05620bce36fcfeadb8d3b015f635f9015f11e79d7f91. 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/USRDG0225836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562a5a7fd812e991652108ef0082c1b99420ef445d284e2fc4a68701be04eb2b. 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/USRDG0111743.
Vals en Mi Bemol Mayor, "Gertrude's Dream Waltz"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307a7efd20527cb45b4eee0805877ccd6ee52a8d110783de6914e7ea6e503a9e. 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/USRDG0114143.
10 Contemplations: Atmosphere Of Awakenings
10 Stages To Meditation: The Movement Of Youth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41625f4d29353cc0c4f8066aa06cf47a3cbe4e6f71408cf0a6625f6c1e431d2. 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/SEYOK1663938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2039b3f014a975f2d82f01350b95280630d5a4dd2b9c9e593b7f97dd74d7c58. 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/SEYOK1663940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d9e976e830ce1ac88e237bed17f81a69884fe4117f483f4e73ed3f434c83bb. 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/SEYOK1663942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b7ee561f505c59e44f1775f519d51deefbce003c0bd3a38fa68998b7058831a. 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/SEYOK1663944.