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 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 0x9bd28fdf2c748c64c76309de0bfb41b284f6238695dee79b76f3bc0f99520abc. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6637ceee-f631-4bc5-91e9-57eeb3c952b2.json and https://artists.proofprofile.net/proofs/artist/6637ceee-f631-4bc5-91e9-57eeb3c952b2.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 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 0x678f73c897d6c1d9baed52d824f479a651ec239516c8016e8f469ad91c647ddb. 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/QMBZ91659148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4dcd06a71ead7f3c3464413974840c64dedb6a5e99dea602f5649a03e6d2f8. 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/QMBZ91659149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d48405fcd50a1218834c8aa1f95ea74531e873d638e0c4de259772431365d47. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QMBZ91659151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba67b21076c8de847400283935d2533fb5b36193dd1584369f40c860458ce447. 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/QMBZ91659154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf31ba76961a07011916a9b61aa748d45c4b2ba488e6ec99021c0aec5772b842. 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/QMBZ91659161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2a8f7095a40381cb5407f058905519fad8755adc57576366f544a53c0bcdcf. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/ES19G1201529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58980b99d39e373819cfa09196bfb5e1a700c3a16ea404b4e938b449463d3030. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/ES19G1201530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502bc1ef93a701b3f52d3b51b713d7bd56399ab23647e29db295db212c9ab178. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ES19G1201531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9996f27bce5f9c7a2b6801e2b8ec696ceed6016523be3278cdb973d5b3adfd1e. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/ES19G1201535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f9c2df7c710c6b7fdc3fc32b736ddf99140e7bd7fd4827c17ad04ba8f52858. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/ES03S1400689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd4a6c14d200afabbb2b2d8643c35b89de7fcfd8557bddd1ed01f499231a8d2. 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/ES03S1400690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa398afa90f58c4d04f025d847e0706461a1dd65c590d64c318d6d7ed6d323d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/ES03S1400691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c75a005d1fac3127e6db5163a8bcb6e2b1ce85af8c02ff1859a07001131aee. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ES03S1400692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412f3063296a2a6e685dbea6c1ed6d876c9029205c84604957c12cf1a5399392. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ES03S1400693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5426d160f7cc2fbbafc6f61ab81a4f66e489b4b7c022cd494a52afe53dfc73a. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/ES03S1400694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800d289506da599c4b18f2d8e0af098ce22d0f138c4a7eeea76852d859d32490. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/ES03S1400696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c467dc8aaa6010564c0b9040ed54f9756963763b96d1840370576ddeb28f453. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/ES03S1400698.
Postáis da última viaxe: de Escadas (Pt.2)
Alla Turca - Piano Sonata Nº11 A-Major, Op6 Nº2, K.331
Orchestral Suite No. 3 in D Major, BWV 1068 (II. Aria)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65df9d807b892ab70177e9439e0d3ecf612d3c295bb594c876a4025415c836f7. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/ES71G2249746.
'Little Wizard' Danza de Aprendiz de Mago
Muiñeiras do Cuarto Baleiro (Live Band Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f50400975adbf1caad9523a0c44660487caa1fe908e4737631705837de8eaab. 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/QMFMG1389889.