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 0xee4f6dbd5f69bfe7ba8b4cc6a22540ef3e0fa8d121fd6987c9fa7089c9356bde. 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/1f9ed355-6eb0-47b2-bfdd-b8208b5af71c.json and https://artists.proofprofile.net/proofs/artist/1f9ed355-6eb0-47b2-bfdd-b8208b5af71c.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 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 0x93a465b77fb2d262e52c4328262404aa0c4c7abe782f5ef34d3dd29d9519ccb3. 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/DEL942400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc022f8cd971181247cf57f2e357bd68b13bc161ee20b10cf10caa141f8c7bb57. 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/DEPX82400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa359cd4dbcf94aa9d2577f207189e800e28f515569b8e6d7936b63b503dc91ff. 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/DEPX82400003.
Heidewitzka (Es is so geil hier) [Après Ski Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x971fbf2da33adc3c042e85f9a24e0fba03c98d294a9aff058e0753c42f6127cc. 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/DEL942300051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9652ddc806877ace70c21f84fe7f311369d7fbb0ed1b431a4fe92fb4c97b4080. 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/DEL942200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c6e676e1ad4a7852bc56d9a0551a5c9808659fba2453cbc78aef5915f98353. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:29:49Z), 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/DEL942100107.
Voll wie Düse / Das was bleibt / Für immer und ewig (Hitmix)
Voll wie Düse / Das was bleibt / Für immer und ewig - Hitmix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c558b1055b473f2e051c6864946c634b431554d0322506eccd4c2a4b5d01a5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:58:55Z), 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/DEEQ82100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8d3243b4ec9ebbcb5fb5bbe818b25a7e2ace6dfe33fda76569705dce75081d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEEQ81900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504ab8394aefd402471c8ef78cb7ec39722b81bdbdf3df713ead97168d0e8438. 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/DEEQ81900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44cbc91b2f863e5b8f5e27dcdd194f5d7be17d27fe80696d575ceea75e10db4. 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/DEHM81800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd0735f4bb025f4af041389ee99f01e498635f27c7dfb955079044cee73db15. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEEQ81800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1232e9c527ae9cd4baa9795398dc52ad5957de7ab54ba460fb24426aeefd0979. 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/DEEQ81700091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19dead2e967a5a156b59bc0e5f425e122751efb663418a1ee8510109e86240cc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEEQ81600032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ad74447fa55d2057bfa2c6b31db624fb9a1fb257e5dead03f8ac197e9720af. 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/DEPX82500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cf27c8e9f9939cf441138b459f99e0c0e565fa0575942cf49375293c41908c. 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/DEEQ82500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035bde6c5a0057c4bab3dacdcab99da0245ccabb357f0bd5d253f15f98cc9010. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USZXT2556314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2a4ed80b8eaa89af63036a9c3cd113f0b109cae69e41d051723631fbe6bb74. 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/DEEQ82400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d000d1c8629f1bf1c5819f9ed58f4a4f6301c9a8501ae5ba25cc14ba908782. 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/DEEQ82400107.