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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981aa4d1c40289d050f04e5e5d9e27bf4070f29c871d7bf99d66b1ccebf09069. 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/5808e369-1049-480c-9a3f-a381009cc67f.json and https://artists.proofprofile.net/proofs/artist/5808e369-1049-480c-9a3f-a381009cc67f.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de6345ce552c6a4cd7c58310f89116ec83a496d22d115e3d41345fb61d8fde5. 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/TCABR1347428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aeb4a4171779e22742d5addcbde067ac5dde9619b740bda73d64068b56118f1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCABR1347463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb122ee019f1115f2947c13a3b6e59323dc6db8e2c34518c7c9bc9742777c5fc3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCABR1347468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07450f62169588b05ac3c5297e643d390d62959bb315ce934a3c8951ca8611c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCABR1347470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48696405ab93e338cae012bb2d6322b930a54f4ddfa152cf2875e9b49a53799a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/TCABR1347430.
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 0x13348a0e37ff4682761e14235c8cf8212d91dda12ef96dd9f1b7dc05d92b40af. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/TCABR1347462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf37d1962583d9b9f21f95a9d7b6fbd358f55a88133571ccfce3351c542b1948. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/TCABR1347465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676ad54fe72457c66117dca4b364a3f1d76b2d88c82218a1c96a03674412337c. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/TCABR1347469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8762d6b3ea6a7a12c4fa812cff07d32df4f2bcb5a944f38df372a99a16d50091. 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/TCABK1272366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33519283449211aa081adec2f57c590f868a1fcab8c317a1b9adb65d25c95a52. 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/TCABK1272367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5608522e1ee727479d51ae91bfd7701913bf8b55708d18146288e83bcd01133. 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/TCABK1272368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63471ea6bcdde4f69ea94a9480126cb734e6876494b1802df807d12a85c19d9. 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/TCABK1272370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451f1efba914c37c6cd90c6a759aaede6c759e9f33ff6a0c4cc7859d4aff1a03. 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/TCABK1272371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bab7f52c3d71d285039c1ffa63ccc03c04425ce65bc88ea704f4005277a8dd. 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/TCABK1272372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08282cfc0fe593a9cafd6f1e53c28aac1bc6ee79293970ef9c11fb22fa4e96f5. 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/TCABK1272373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32702b22438b1fef80aa00c14f659d1819d59f37254e52f8436631607df73433. 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/TCABK1272374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17672aa618b585eed7a38e46d58cf760967f6f8277e3778f8f9701deb683d86. 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/TCABK1272375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe831756e5f3a9b5e71997cd19723a74d20d766730b7aa1d5b52f92f845895c5. 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/TCABK1272376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49da20143ed10459cafcf1a4ab007081746bbf9502c04d53de2112f140fe88a5. 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/TCABJ1289351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7aecdf75fca885d445e23f921835005fe43cbd822ed5027196ca9cc7a570d9e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCABJ1289352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a34da457afaec97841ff11ab95d9e9df12de56a4f6c91237faa2bdfe03b79e4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCABJ1289355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae788f50d674a78b1dde107b32dea6957605ca7a413f36fdb287bdc41fca4202. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TCABJ1289379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03a722faa24bbf1bf37869dbc3fcb1f81cc7e4b69e0577fc961782ba754fdab. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCABJ1289381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ca691b47010ebdca8341568bba0181b426ab02171d08699eaeb9bc2c3adbb3e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCABJ1289386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cea7dfed77066d9dc4968e28d15ff8618ae89fe28f825ed73e1439ec6b940f7. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/TCABJ1289348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddf11e5e8d26fa4450004b41c446f766d199e6bb1441a5797f322513acf3e49. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/TCABJ1289349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f334cc1623aa820cb1094c57dc48806b4a1f9e0ddb92abbf5ade78fd7b0b33. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCABJ1289374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f1cc516aedd38789f390d28b79b7d9377ea067df5a2a3a744189bde8c10040. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/TCABJ1289376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57401cf9609ffe77236f3dd52f4cd2e30d9d92b506d84b17f27160c2a5bf2061. 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/TCABJ1289378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7a22da86a452c09ef2e345765a557d7fa74683e8955c039c9557addaeab398. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/TCABJ1289380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb343b77d9adbc4d895438b395e3beaab597760c00159c422902a9371ad55f8ca. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/TCABJ1289383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7663b81fa0379701a2c01630d9c40f502a47107b3da9011d07b82208e4dd4ba1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCABB1171461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02285939585c42354e4608959eaacca5887afcaf43376a77f34187597d5b3fc3. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/TCABB1171456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf202bfe93f8043d41930302890cbc5e25518e34f3e6363139116008534571db7. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/TCABB1171463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab4fae5c76a0eb05cf41a2593cc2fb6547caeccdfacf2c4f7643337b6fe3518. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/TCABB1171471.
Music Made With Rain (feat. Troels Folmann)