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 0xde3c6588a3f8b8b2d836dd13f106fc98c8d414c0ad92749ae446ecd6349fe2b7. 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/98d09669-3d6d-43ba-83c8-2e417aa947a6.json and https://artists.proofprofile.net/proofs/artist/98d09669-3d6d-43ba-83c8-2e417aa947a6.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 0xe6e5862ff83013fd3fb3d627c4604832ab9637e64f8a67af5046d93aad765af4. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ATT251504110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91852d9e45b7b99e013952b1b340e3afe5657a1d0760f56c980f9f9a3013bdce. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T11:57:43Z), 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/ATT251504130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85dc968f26e74540f88b5944057cd4389560a8d475c9afe5a9ec541e9c1ee664. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ATT251804640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf62650fa213a3de3571a250cb476079534850b9dd8fb1b59d33aa597413d10f. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/ATT251906030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c11adeda912451265c0224179d9715147a01283f104486b31eb1789ed60b1fd. 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/ATT251906060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4bc0e77b39fec19d32829e308c9944edb43f761361c56ec5e28febb5611329. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/ATT251906070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c1079750ba647ea7723e2c1fb3dd6076305a8842db1027dba76c7444045e23. 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/ATT251906090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148e9328f9b00cedc46842a249f2dc32ba65a848349c25405872c8b60735ea74. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/ATT252005810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c571f13117229fb4dfa999f4df028077144fcdbfc7d1bc2c4a98195e4be3d95. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/ATT252104150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35bb1b1c342c08561284d6e610fc3fd03a293d2b8c1a7bdaa0a510cfb2f5b57. 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/ATT252104160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74181a51685f977603beeee2b90257f88ef6b8f8d3b8fe2000cb95cb1e7696e5. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ATT252104190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8084ece14366e16d2d8a5d34b7b5fedb25fadf2b37dbd425512dc45c16142110. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/ATT252104260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16f17334ea0fa99a05cde97f694bcaad6b819727589435cdb0ea4718bd6fcc4. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ATT252104280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd008495b53b19ffb38aeceb6504c5c5ca9443ac185348dc9acce04975c44672c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ATT252303700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ea48e30a10ec9e59669e10766e0900c00888ac6b08384c1e413844f60c3fc6. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/ATT252303740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d128cf116bd555fe93451d02f63b09676f81d26c911166c9607c8923d24777. 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/ATT252303770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58ce1a4431db574efbf9347e5d240a1b9e583aed9a30ef13ad99cb1a8b74346. 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/ATT252409920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfea69a6b359156529860cf259184c73f2cde7b40d0d710679a4da952485ce6. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/ATT252409940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e8bbb936db280df7e67f98d8d5fa7f642e06eea1316dceb9694ead82d667cc. 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/ATT252409960.
Schlager Schunkel Medley: Aber dich gibt’s nur einmal für mich / Ciao d’Amore / Die kleine Kneipe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937ac7369c27a8465ea4272a60c5f861197d626b0e133695b80c7030df696dec. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ATT252409970.