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 0xf6647275f7227fbc9fa32a20a7dd45d2eee6c689dcab285917dd596721fbb989. 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/28eeb8f2-33fd-4c7e-8689-51997c11b4b9.json and https://artists.proofprofile.net/proofs/artist/28eeb8f2-33fd-4c7e-8689-51997c11b4b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beruhigendes Vogelgezwitscher (Vogelmusik)
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 0x566a50372cbf6b0e8c24e4f6c15b0cece79c82523e5990c155e11e2d3586b806. 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/DEUE12414974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4b33b340cc98e24b01acd09190e9d7df47aaa5e015f5a33baf489b9668dfbc. 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/DEUE12414979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc0067ed19e06244ff2f7bad3dd75f3f216af66b47e1efd8d61bf23d382a74d. 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/DEUE12414983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7805482cd25ef437873b5002b8a29b5b03eadf51e6dda3547d6606690f4d62. 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/DEUE12414986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbdf10ae282b545fb3d02862ccb654fa8316139010f59a3cf896a6892f9f20e. 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/DEUE12414987.
Wald, Natur und Vogelgeräusche zum Einschlafen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f0cd3a346def86913a760414eab8ca24910c0196987db5f6dfef411944238c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXBDT2353151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e27a94eab84ef6c5774d6839dcd6fe1cebb849a50011396213994626966b2e7. 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/GXBDT2339477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2265f84c82f671fbca19d2885dd9a5c681dcfab9c0d4d058b2c57d0799763c5a. 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/GXBDT2328029.
Vogelgezwitscher ohne HIntergrundgeräusche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db0eda6341573fbdc334c0412ea11ff351c45695f7bd77fe055a3d9c4db922e. 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/GXBDT2370323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf207651c209155adb117727acfae723b0ea6db0971e811e9ee57ee241ed56246. 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/GXBDT2347630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b451176c037334564c19dd4dbff8f6f981011b051415bf5d5cb04017962f9fa. 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/GXBDT2395472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x456f67ad8b5e9b7c0a52c141b01f961c7f694213981235ae535e5ea9c0b60d1d. 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/GXBDT2343150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e2a149c3a8ef5704df3bc253c5187e5efca0e831bf91faa38889d9ef2723dc. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GXBDT2397777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5564f99d9d4fe598a0d4f01932a0d1bc87db4b4024bed10fe9743fd2b4674506. 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/GX89G2328445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88599bfa6dc3dba5f28c068af89edc17b17471e1059025b30edc4da6f54c8962. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GX89G2352399.
Beruhigende Naturatmosphäre (Vogelstimmen und angenehmes Rauschen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56f0965e4e0106403adacc41b0babf4ef7cf90507577052980608ee2dea713f. 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/GX89G2392250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6caed862d6bfbd51144fa46da698c72dfedae3888b2f6c47c09a2bfdf255eb2d. 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/GX89G2361815.
Naturgeräusche von Vögeln und Wasser plätschern
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21d42544b48ceff0e38e9d324b428112eb78d63051f228649c4fcd790d199bc. 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/GX89G2390060.
10 Minuten beruhigende Naturgeräusche mit Vogelgezwitscher
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8aa4589e403303516f7ede842270152d966e6f534556cffd9b6d30f5ae9a06d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GX89G2340545.