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 0x08f54d9fc8dc010700eb23b1dcec560533e082c21304424fa303c1dbfe38432a. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aed5aa1a-ce18-46e0-8ef5-2c6a84b22c60.json and https://artists.proofprofile.net/proofs/artist/aed5aa1a-ce18-46e0-8ef5-2c6a84b22c60.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Himmel und Huhn (Hörspiel zum Disney Film)
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 0x4c4fbc425487ee9effd207f053d80e844e46de37d91e4906a26cfb82a3d02114. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USWD11573057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4841cc9e70b910ac21a525fd2d8e6860d72274571f2ddc16454e1eb6ffa5ca2b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USWD11573058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7017bcdf46e0a35205dcee38a4c786dd9fe78957b47519257d13d997abccb8b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USWD11573059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2278919478a4822512dd0c1fe0901eb5692271716d09b6c5930495553bc8cef9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USWD11573060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549212ce41d7780538d71aa243ac21b06b4a56fe3f33441af96ba53a65d87651. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USWD11573061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2a0dd4a8c0c08bc94387871479b1cf139276c11ecc49dc154bd4c24389b55e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USWD11573062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288c7733a2fb74846054839ca95f478979a4f78abd34e59e57c1c7757144f5b6. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/USWD11573063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7dba96aa684367f62b2ab7a928ab0431b678ee354fbb26fbb28273928aa656. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USWD12220305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e80ee5158f6d1284c3d278c8e77bb8ab2df1edb82b4df2d035936fb8e85e164. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USWD12220306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bbfca05d3f9c0bf9d53fc24f42f225d98479decd9e6c0764dcbc43fe97834f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USWD11573066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9dd8afcb1a528af45500cf83835fe87d11b570db9ec851335aab6d805661e3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USWD11573067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4027151a9584041506e75df45d57658003e64ca7d2647344a218111265d68fd7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USWD11573068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2850a2abfffb8f7c2c40e832f3ecfacc9c1f20e4b917d3b0d6439f6fb2805f9. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USWD11573069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1a6bbb8d1929748cc86b9a8649ac6eff1a97d66e39a02baeec965cb9cbcb1a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USWD11573070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e101f5ff5a46127f6b18499fa57dcce61d3d1907a8288712e5aaf2156a557c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USWD11573071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6860170b1a001c9375d878d3558d1cfd9b260a68b71e2318f8a625f2ae97772d. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:52:22Z), 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/USWD11573072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d5c68364dc8cc4b58ed2e0c57926d4735ca43e70089579fafd123ca298e456. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USWD11573073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78249c103d0b9f87288c676a5ab12aa97f2dea843dded5824edf899dd855cdbc. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:18:34Z), 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/USWD12220307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb64d46fe4cc12405065c581761b59b493a83519ad4f13745592592481ca7ae87. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:51:34Z), 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/USWD12220308.