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 0x6615494626187c84e0627147004009ffae983966db14a403e17e6487a64217b0. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/72b46f60-e415-41b1-9d8f-3d5d1ad2d51c.json and https://artists.proofprofile.net/proofs/artist/72b46f60-e415-41b1-9d8f-3d5d1ad2d51c.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9132c987f66d7f697050a16691896230247e3bf8c486634a4c64d4d5c77f0635. 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/DETH11600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3611c1c625334fdd9ce2bc65cd5758a28ec76013f3d2b324ef4bc2770dc62c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DETH11600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aee66f61d1fbd97422536e045b608e74895de548f1370e8ade5504c86a290bf. 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/DETH11600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3922f7a0b341b2ae3caddded74b992220d8d455adde24567d5e0cf48ddc364d. 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/DETH11600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc699c6049c5eecc16f4083b7d68d4c5dd8d7820925a3c773e32e900c551d950. 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/DETH11600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abe9e14724d5e4d1e62c83a489433690397edcbc174f51d1250281320842cb8. 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/DETH11600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3700f182a9bfb2766df4599db8861458dbeadf143381ffc27b2c9e3a3644767d. 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/DETH11600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf534821ff4550a3ea2745664799213e33a4f8dc4110fb7f8a3c34ac1535cf177. 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/DETH11600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5c0db5f5ed71c0189de2be180b267e54e06752c965d244e6274bd2cb9efa3f. 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/DETH11600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f74c3f28b943ef3e5f9229377a0d14c3495bc21d2fced441ec5545b85afd41f. 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/DETH11600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b31c8f872fcbdc2e926753500b6f7c49ce6a3822a061c454fe5abd49705fbfa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DETH11600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae69352a33a4c2472c078e7c7bdce12b8adba6a322c07479006bcf5e382f5d9c. 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/DEQ022106258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e95a5c42ea102188eae20ce6b7e6654adca7fe766b166e06d22e2903b887e3f. 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/DEQ022106259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa923144017edb649d6133dfa94d48069b99b3d93dbbe8917fa1dd80d9b3693f7. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEQ022106260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3f9605c068773f8129b6ca8e9be152d53bd511cfcd7cb26f1debf122e39538. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEQ022106263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac659228ea62036d248b76787e149a20102e954c39dd0188eb6baf6ab3d742f. 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/DEQ022106264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9d425d24b38aefa72f688cacbb07d20805179d217453e5efeea6f55a1f228d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEQ022106265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ae2ed02a15eaf37568c11bcb715c1e7a19c4361fde79fd921f7593a0146b83. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEQ022106267.
Selfmade Records präsentiert: Schwarzes Gold
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01078d286a8828ef9d61bb60074f161990689f59df5eb9e8ebadaca60e82ed4f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEQ020502009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6a3388356ab77ebed421a25c41ad1301c4f8342c93cee490381109281a3332. 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/DEQ020502015.
Der Ruhrpott ist unendlich (AMAZING MAZE Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc970fa3a6e55006419e4f57a74a1a7cda292900c1b5d65316dd75fd428b279a8. 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/DEQ022260141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da9e12b30bef7e436fd9269e7a3d05ddf2300f9a8337f8a7420cb8e40fc6af7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEQ022281261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cad3efed8e31d2e32db95389784707154899b19e5e5c05ee06ced2f56aafbf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DETH11500089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530b77d43407398c622f8b45604ab2d904057a448f9628700cb4541274eb4267. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DETH11500081.
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 0x993041448124ba335b8e9026168e774db0a3551e2ffa8a5ba5459e3fca1185c8. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DETH11500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093cb80c0e0f2bbc21940311dbf42c41ed57892a83754a7e1c499a7ff25305d5. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/DETH11500083.