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 0x3473bcb908d415923842cc713830d254451c80fbf3d4975be923044aa63bb999. 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/a400c902-9674-4e48-865a-535b8743f351.json and https://artists.proofprofile.net/proofs/artist/a400c902-9674-4e48-865a-535b8743f351.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 0x7973d92d451547dd480174c9257bdb63a23f08a71deb4d898dc3970dfbd70b0e. 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/DEZ652400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eee732ec47efbf4cfcb71c5702aeac318f399f840357e65f28bf981ab8c9fc3. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DEZ652400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebfa651acb8ccc614e22b8fa21d26a7730965bc351daf207bfd10bdfb2a0c9c. 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/DEZ652400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe98dda76639578bdd11a5e422dc765b0b4aeeaade5f12a6c71e86a4c08c95f9a. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEZ652400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5eadf657152839a86d018665ba26c96f32ad7bcc7d7f388ba051fe9981243cf. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/DEZ652400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f67ca85a4352006d0cdf086fc06220e29efb1fbdad0977868e01ca202d2adf9. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DEZ652400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70389b9a5e191c73fa166b77e641f80be1f532b514df2ed13c659893514c6f46. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEZ652400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ed1945c352a46674bcca072d41a7a48bda3e12d0d76145c73498095971bdfc. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/DEZ652400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbef90c07a61bce12fb6b3ffd5622c88fa8fedc000c570e51850870825ed5579. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DEZ652400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adb6545dc83a0c35443b866e5aae2c691653e22c2733ea7d644fe55a6d00226. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DEZ652400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4762eaf1bc507688f51a627e81189658c38940b0017cf71f259587f44679282. 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/DEZ652400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ce8022bc790979eb351388e91621af80d3c0b7d7755457633725de72f10036. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/DEZ652400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796ca83a04c5b2cc63e76b5b746b3147a90d21135a72218d18ccb9148673be81. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/DEZ652400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143c0d94f31a6079b5fd70cde69bc691b6abded62b27f4dc64791856b40721b3. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/DEZ652400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8387d4e2fdc4a8d530ef5bab943ca7ab8a956b0f985ca6b0f05e491471d2e8. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/DEZ652400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd04bf53fb5811708be1e917349780c855c3c00cd28c559ca55c3cc48a37bb6. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/DEZ652400020.
Wir vs. verbitterte Empörung (Korrekt II)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404366d8324319d58e2d2d91e9be3fb307e4251d45dc7577b016ebdfb3fbbbbb. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/DEZ652400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9248ce2c667fa7dd1dc2bf98b05721bbd6b287079cf3b1bb6d57b6570789d2. 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/DEZ650611024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649f69680f080e80a1dc095feef3db678ab68b7184341f1db139298fb404beb8. 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/DEZ650611025.
Ich Möchte Ilona Christen Die Brille Von Der Nase Schlagen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd530391bde3ade591fc5e72fe5ae0277810f3becf6c8f00e6cbb31e387679b52. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/DEZ650611026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3e0f42dbc72f2e67d4ece9708d4d7c7821d5031aa271056b743d58085fdb57. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEZ650611027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa303e0ca373d28a0fd9be004be7f0792c66926d9214918caaa420df1af76979. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEZ650611028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c725dbd03788bea0c84a4a728687a42bf1119106c8791d7379a0b4bc960974. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DEZ650611029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ed6c10a0bcef32ad18c16401dd4b5fb40a70e04997bd87991872f8b06da07a7. 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/DEZ650611030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b14b5e9d449c68331eca901f8c12ac1fdb1da8b0e524d5931b388bba8e23106. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEZ650611031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b66f0c192ee299322b9a84eb6877ffc1865ea5c6b6de31918a932646b71b2a. 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/DEZ650611032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62abfcc6744ab607a585d0514bf1b65a2857c9911e45ea6a691ebd80e5435bdd. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/DEZ650611033.
Im Rockstadion Trifft Sich Das Schlechte Gewissen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb8372b57688f3ad3d3e9ae9cd82584abb722ecb201bcde9b654ba4cab70977. 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/DEZ650611034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a054bee9821dd84e5b9ffae91d05a6a110c8c6dacaca9e468f7965dead64b8. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/DEZ650611035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71539caa69f5202406c89e36f59293d71bc2159e4a469d77f27092d985613e2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEZ650611038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5c71f26bc317f09d586f80bfe8b7622aecd1e7d11813391797b42f8470dde4. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEZ650611039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b655bd4c8a543d769938ffae27984569c9b14a4f6a853dd001b49cea12300f. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/DEZ650611041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde99a925ed1746a143d99ed6b5c7b3931712459971ed00388d0abfb80643b8e6. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEZ650611043.
Ein sozialkritisches Schlagzeugsolo später
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503b05dca4301e31ccaca46117975a77c6e381cf02f0f8e819351fd783d7cea8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DEZ650611046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51299243a989f700466a8c26d4a1145b44d477df62e3f9961065f784d620e062. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/DEZ650611047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e1cfd8ea3966f11b64eccb70ac81d4b5504235f428276e6253d1e47bcc8f25. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/DEZ650611048.
Niemand beisst die Hand, die einen füttert
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf356cac18bfe6899a999f193710f6482bb6c6facde17252eae1f26d0be8f002b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEZ650611049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3897ef46cafe5d00b508661105d749093a6ab744221a405550c7453f992227c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DEZ650611050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e8472c495baaf396589fb458f54adc8b147b7b6418eb6379b93c7f9ef993af. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/DEZ650611053.