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 0x4687f8b648e055d376ec4c38ed66b464dbf2408fa577210fbf868fcfd6c529d0. 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/5105a6a7-3941-42fe-a804-eb0995c700fb.json and https://artists.proofprofile.net/proofs/artist/5105a6a7-3941-42fe-a804-eb0995c700fb.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 0xa2f33824476532f2a1722c8360f7893d9b7317136cba6756e3490eb94d1f1388. 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/DEXN81889204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4f729a2438609d518c03a39e240bcbd630d456adf12321cf6fdfe2ff827084. 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/DEXN81889205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db1407c0e152f3a0f2e683b806d863be380fd2eb3b1f4e89278f772bca46a13. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/DEXO61966858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43afa6b4d14ef22955f21f314053fa68c8e6ac0c8ce22aaa1437d19e5ded780b. 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/DEXO61966859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6bfaca045ed1bdd78c6a34ac2147026068982a8d00ccb9eaf918c2e093248c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEH742008487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d96aab8769f80bd5837bf2ef1f62676e77ba55fd6264619c66d83c6cf6674c0. 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/QM6P42071302.
Perfect Strangers (feat. Luna Morgenstern)
Perfect Strangers (feat. Luna Morgenstern) - Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd7cdb903b762b3c51d0a62bd345685cc1d42dc5d5c91b0497be940efe68a84. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QM6P42068931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c7bcf1121f019f2a9e8135ffa1bc9339a4f17c072ac6662fa0d8f3916d71c3. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/QM7282036392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009f4a74d10a8c55b86827d257660c7faafcb196042a4cb94a5ded32be3ff3d6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QM6P42075128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef6119c07b63d74151beec7b7bcc0fdc32261f24438b7ea150dd078f7327fc3. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QM6P42075132.
Perfect Strangers (feat. Luna Morgenstern) [Acoustic Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287bc0c113dc34b5782a8a2d2896f5715bb98437b5bd47d7fdad876227d735d7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEH742160491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc581679f30ddad396a072956f3342676e87aec1d81ab8294ee4c23056708b8ae. 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/QMFMF2104241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b77534da2df1bda36b121dd85c82e34d8f25b6eead04fa52f1e652841aa7fa. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM4TW2242707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342fae2c38aa170e124a451075a559738fb37a5909c5349405d4c9d7214ce16b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEH742225974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6183e28502a1edbda91dfa4006c4a7bc664654355c1edbbf3a586adecd04d5. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/DEH742315609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b8ef673f7daa720ebfab1cbf035c0847caedfbb7c2d032b1e6c77001ef2035. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEUE12333321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38353029b8082cdbe768ef1f4fc83ca10eb3fdfc97e5f1d6f6c70912ef13a106. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEEK22400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f029212f473c15325f0f87953177fa8520d81c03857ac040bf54e125b48eb4. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/DEEK22400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8dfa8072634834ceb0d5fd33d81809390a5d77fb0fe813161f46dc288030cb. 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/DEH742433650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95744fe12c989eef771a1342bb2a8cbc4967d97e6a5c6174eed0f233628c5a1d. 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/DEH742438617.
Schneeweiss 11: Presented by Oliver Koletzki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf964765acd6d98b3ea94ea65cd63dfea1ca67af4acd555e9ecf055680992817d. 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/DEXO81980842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb7cd5fa71581e5ab8a9680b94c51911ea2929fb7b909e48070a907c884805b. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/DEN962336701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8fa9a45cddd7720f5d6316d69021be9d8c57832aeaad5aa092bdfd99709e64. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/AUXN22426466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5190524443b49d38735381652c4c9516c1a9b0d7648f828e1cee9e114835a97. 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/DEUE12333322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc6b240fcd997ee49dac5aefefe32d2d73b27f19946a2afe53c29b88d11f89e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEUE22057247.
Schneeweiß 10: Presented by Oliver Koletzki
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f33824476532f2a1722c8360f7893d9b7317136cba6756e3490eb94d1f1388. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEXN81889204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4656496dbc7451c4a1d848fcb12e4d1c270e8cfbec108af5a6ad8162c3addc25. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEY472081832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3329012fc7c9406503cd3c2094038d893e792ce248bc56846c5ff541a0eebc2a. 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/DGA072391330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bb5faa5115890eb047efc80c5d891a0a9a62b805571b0c5531f88fe4fe775f. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QM24S2401449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b11044f66242f902438c16b8d19cff232f785741e76d4b62e90261a92b5fe1c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEXO11932286.