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 0xe2840c140f25c8b152242e81b64c65423ec66a0fd0e2d8a5339e79b001847bb3. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d33a42f4-8a5f-4451-959c-400f7ed3586a.json and https://artists.proofprofile.net/proofs/artist/d33a42f4-8a5f-4451-959c-400f7ed3586a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Forever Piano (The Finest Soft Piano Music for Chillout and Laidback Moments)
Piano pour toujours (50 musiques douces pour se relaxer et profiter de la vie)
Easy Listening Coffee Break Instrumentals
Romantische Klaviermusik für den Valentinstag, 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 0x7073ae884edb1b5ceef8267428e9c253495c23ed3d023e7b19acac2dd1088fa9. 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/FRY510778301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a9c37c605fcd26aa1ff89c1c11f93a922249afd0c1f0579f26b863228914d3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USRDG0112784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c84f581413c40972b635ed36375911ef1ad28abef5772a1881fba2e3395cc43. 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/FRY510779700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1827bec180088220ce2c13b40bd62aef2ed79ab5bbc812e4a86942c58fdadc4. 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/FRY510778315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a979dd0dd4a0d46118fc426447dfcb47c0115b51c0a312eab1a56a991ddb80. 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/USRDG0112801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8016dc2b51c2ee2b2f23499e227d02f5278731132f3fe5119a9e0db0bad8836. 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/CAM460602762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ffdceec3cc18187db5dce278bc9ea3d7a05fab87665256375be4190d84aadaa. 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/USRDG0410149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08f27d8ca83aa70c106efdb0704558912ce4e6a1fa0d1f28c3c46b328d7ecc5. 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/USRDG0111857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b06849c96c93147713e591514afd372c4eaeb42f29612c15e717579648c565f. 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/USRDG0112781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13724516144be2ca9ba10e2c54f7048c0c08466fb420f437686ed81f299e58a7. 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/ITR551316117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277d16b17827852b5bd9053b5794a8cd1da7cdfb327b6bea5ac799d3494883ed. 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/FRY510779713.
Música Romántica de Piano para el Día de San Valentín, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa099949c6cdaa332bdb54988cab998cd84b1c6a8994e3f51404d8a9c9a099b6f. 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/FR0W61531437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409958f351c137b57bfb948f912d38687af0de9dd54e9dea41017d391fb3faaa. 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/FRY510779697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a9c37c605fcd26aa1ff89c1c11f93a922249afd0c1f0579f26b863228914d3. 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/USRDG0112784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e92eb7e430d10ee4b0fdafcea67c7e0ac8cac7900ee82815ca516a7a823436c. 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/ITR551316841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c84f581413c40972b635ed36375911ef1ad28abef5772a1881fba2e3395cc43. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/FRY510779700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1827bec180088220ce2c13b40bd62aef2ed79ab5bbc812e4a86942c58fdadc4. 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/FRY510778315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7073ae884edb1b5ceef8267428e9c253495c23ed3d023e7b19acac2dd1088fa9. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/FRY510778301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277d16b17827852b5bd9053b5794a8cd1da7cdfb327b6bea5ac799d3494883ed. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRY510779713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b06849c96c93147713e591514afd372c4eaeb42f29612c15e717579648c565f. 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/USRDG0112781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8016dc2b51c2ee2b2f23499e227d02f5278731132f3fe5119a9e0db0bad8836. 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/CAM460602762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd08f27d8ca83aa70c106efdb0704558912ce4e6a1fa0d1f28c3c46b328d7ecc5. 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/USRDG0111857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13724516144be2ca9ba10e2c54f7048c0c08466fb420f437686ed81f299e58a7. 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/ITR551316117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a979dd0dd4a0d46118fc426447dfcb47c0115b51c0a312eab1a56a991ddb80. 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/USRDG0112801.
Beautiful Piano Love Music (All the Best Love Songs Played in a Romantic Piano Style)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90aed7105812e9201ab9a3a82550d1e9293c3d3767eb8515fe7e27f83d7f930. 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/FR0W61452940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fa3382daa673a9b376e401163a42865a1d38f6c39857802588d0497239fca5. 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/FR0W61452952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f56ca085270f0f29e15d8b723d432cec05e2c734d5aea5626e1d3e548cb45c. 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/FR0W61452944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26893b25c7f20210ce9228733109c729083c678643138a5f5bc4eb09f9936e4. 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/FR0W61452945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ff77138eae5b8008f9d0e749a980174f409231ab7121f435d6b6af648b0690. 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/FR0W61452953.
Forever Piano (Piano vom Feinsten zum entspannen und ausruhen)
Piano romantique pour la Saint-Valentin, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277d16b17827852b5bd9053b5794a8cd1da7cdfb327b6bea5ac799d3494883ed. 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/FRY510779713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf2d95356694b2300c2fad59d6cc35c76a2a4d0123e0707a4bef1eafe4b25c1. 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/FRY510779721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088742d47585407bc68790a2aadb047033171c38e24154e4831269f8a51760df. 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/FRY510779728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7aa16d441ed2083d2583e42d0c1a2ccf4df7c329aaf9342be2d94aacaa4995. 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/USRDG0110094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5347c2aa7de97cf6fdc915648f6d8390985a3ca72324304ca11d4c33d523e511. 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/USRDG0610449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c344175b04325c4e13d25ebe158451daf2c2d189b657536f3b6510a7949e868. 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/USRDG0223362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ee83291bf7a589b563f1981127474df852abe78fda541455103c940adda18b. 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/USRDG0223053.
Romantic Piano Music for Valentine's Day, Vol. 1