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 0x12275110969e0546ae377ca099165a72343b237c06a5870c82aa66d46ef5c287. 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/fbc04c63-3d4d-4c4a-bfb3-21ea9291d868.json and https://artists.proofprofile.net/proofs/artist/fbc04c63-3d4d-4c4a-bfb3-21ea9291d868.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 0xc738d05fe452226c0e4b26cf13d9d2e0afca47dd65bb71d3c8aaa7d053fdcdbd. 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/DEZ902400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84708f855b9cb84fe6563184737fd00e007e1a1566d600dbacf3d38fff472ee0. 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/DEZC62214637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881aaee71460737c9643bac84e06a0c714ba0841827b39bf158ea7a056f1d666. 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/DEYO62400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec58966a3517b38e452c533bf1dc871265a7d35c391d5820245d6ba6e0d1fb06. 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/DEDG62300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf2b6904887e4ed8b6951be34abe1194c61f01fa7bf0903fc5ee58d989c4fd1. 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/DEZC62216028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5f0281e2ae7e94fd692a3cd2b3b1f32f6e8fbfdc46bc454c9ddae9204ba956. 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/DEZC62216029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefded67eaca3da524f0beb26644b35ffd6dac4b7fa6ec631bd07377af03c7888. 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/DEZC62216030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34d92ad88d9aaec482792be32c82ac9b78d16e3bcc0a25aa1747267b9bafcd8. 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/DEZC62216031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c57385546b1648b6cc72dd32d578f1c28901d9cf6dfac52d6cc4c6dadf27751. 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/DEZC62216032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e8160bb6ce95bf4baba66e4cec36d7c23b49522e2a64266dd92378ec1956dc. 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/DEZC62216033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eaa99005e2982d7ceab1aa1d60be30157335062f1d57cf57530c6e6f6ddd7e5. 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/DEZC62216034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c10829f0060223f973ebde7215c4420a7f6eb9294d7dd2ee8818593c5b123a9. 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/DEZC62216035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2c669267c54e83c0195a50fc9a09ee224bac05c0193d034e59da37867a7d2e. 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/DEZC62216036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309ea6ce0a1a1337b35677e61c5002ce498c9bcf849d8e509a4f30894fcbbea1. 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/DEZC62216037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84deafd0fc0b8e811f6e60f883a13774dd23a380d0a3f2879aee45360a93ed48. 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/DEZC62296486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a05c3914fb84e39ad1c32a6329ed9ba4c7ae747cfe253d685a39228040b002d. 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/DEZC62216038.
Und das Geheimnis der unbeglichenen Bordellrechnung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f0dfe2ac9daced3241120be1ec21fb8ced82c59a455765e194c5d8758b3ca5. 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/DEZI12000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0df3d8669b56af37506633a6e43ed3f9c76843503c1404431c77283f7039af. 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/DEZC62298663.