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 0xfb764c0ddde8678bc8f6c1c00f4010ff4dd94df223a4212d6a4884d34d2a3060. 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/8bcc46e7-3af8-4074-afa5-45862f67acf7.json and https://artists.proofprofile.net/proofs/artist/8bcc46e7-3af8-4074-afa5-45862f67acf7.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 0x3a51b5dc1b4742ed4e6867f1d6ea4a30cf2d669af3ba976bc69ed0d8e9c380f1. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/DELJ81220976.
Direkt in die Sonne (feat. Mehira Cruz & Mo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a22f0dae9f7042ce0eb5f0e1e2a107ef39e9a4bf6950b788a34c55d0d530b6. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DELJ81220983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32edfd948f2200c09c973c89457b56f905a5179f10fbd81cd445b7e7239f1b4. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:09:41Z), 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/DEZ901700831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce3941856883ce6813395bd3e27a202837b08ea8dd9e4bab70e945947fe1399. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEZC62463828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x604866786dddd206f660b5d9a05166a45f52227c5ffb008215b4309ce3162a13. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:45:59Z), 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/DEZC62576967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2e01e6e78e53baef84ad2c6cf2fff7033f52f0b8a5ffc9049dc1a72116f958. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/DEZC62571601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb38019c32b438486a5af3b40f0dd4cb6090499225ed9967ca02d2d219c49ab. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEZC62576968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc8b29ccf2a0b3d23ef0abc37590fb0fc990dcfcc678b8b2e92f4068d1b98fc2. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:24:40Z), 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/DEZC62576969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26549e1f3f57eafc17258ab9f5e17dbe517b37c2fcb5ff8b2336ec26ff70ab5d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DEZC62576970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb317746c4990d1a702e8a09f7dfb19f9cab17419a231af1d248cdafaa677b7e6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEZC62455474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaa72d64eb4b24aac61cc3de003409587f22bc552962d7936479e163c39b22c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEZC62576971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159df25ed68f39130c7a9d68b5cb0b237707eabd45a44d7bd171682a458d24a0. Chain 2 (Bitcoin): anchored in block 957868 (2026-07-13T14:56:55Z), 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/DEZC62576972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda448f514f36489df8b68443c8ee1b36ddf3e9d811b4a65dd342532d0fa0b880. 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/DEUM71101258.