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 0xca02b9a3c430cee877c7115348fc32b0f9dcbafc5188ef73ff9e76435d602cc5. Chain 2 (Bitcoin): anchored in block 954580 (2026-06-20T17:48:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6247862-4898-4aca-9caf-64a099004b35.json and https://artists.proofprofile.net/proofs/artist/b6247862-4898-4aca-9caf-64a099004b35.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Il mondo della luna, Hob. XXVIII:7, Ragion nell'alma siede
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 0xed3d45e7d718d0629c35f659a177dd6debae12dfc95f2e556ae8f69d1ab24e68. 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/GBMJG1707414.
Canciones Clásicas Españolas: III. ¿Corazón porqué pasáis...?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4947ba233a03cbac0812e883d63c38b2caa9ab2aa20c2b9d7d6544ee14b941d4. 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/GBMJG1707430.
Canciones Clásicas Españolas: IV. El majo celoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe12537fa686a7132683cd739f15cbc9288a210e4c22767fbaec8d546a6f7026b. 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/GBMJG1707431.
Canciones Clásicas Españolas: VI. Del cabello más sutil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5683a73989b5e30a9fd4dfb50d0b53a59c06718a4049f8bb76ff532486ad5367. 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/GBMJG1707433.
Robert le diable, Act IV: Robert, toi que j'aime
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337e26ecf68320e40487c51463b42722c235d3bb11799738c1d5bfd8c0c3cbf9. 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/GBMJG1707435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2a3a7dfccde17d88daf65d7f16597a8c2f869453a30e47d682c5c82290b227. 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/GBMJG1707418.
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
6 Lieder, Op. 57: IV. O Jugend, o schöne Rosenzeit!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b47f73c615159586e91585351596c6ca7dab877c43d6e6308f2356a89c7ba3f. 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/GBMJG1707419.
6 Lieder, Op. 57: V. Venetianisches Gondellied
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d675764bc1216930b982e15c84156c919a2813628864022e49043289576ec79. 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/GBMJG1707420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ac776a5c8699843af8cb3caa8c0d912b6f08f2cf84ca2450125eb9f5a8d85a. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/GBMJG1707421.
Four Songs, Op. 13: III. Sure on this Shining Night
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8d57ce36feb84568ddf2221eb7b051a4a9220ca79a743fb4a611214f2c0b3d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBMJG1707426.
Canciones Clásicas Españolas: I. La mi sola, Laureola
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295767fd9e1919d4f8b40759934420694e6c9b59037e11bee31e9bf41e41dc51. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBMJG1707428.
Canciones Clásicas Españolas: II. Al Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x444cf17acdcaaabd76809144e7dffefbdf2a20f29cdf9d123f55aa2ef0bce408. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBMJG1707429.
Canciones Clásicas Españolas: V. Con amores, la mi madre...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4695e8956551e41bab45f574a81d1a7e5bcf7b523964331fd9189c4d96fe815d. 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/GBMJG1707432.
Canciones Clásicas Españolas: VII. Chiquitita la novia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd12e6ecf6869d7923f13ce8b6eedc0346765f00be40b2d950329cb027ccd1b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBMJG1707434.