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 0x4f569086bad531e33cb7f5b9c8b4fdb0d82aeba56f2d8cd26def295a07b623aa. 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/834bcb92-0fdb-49ef-badc-9b0699ae0499.json and https://artists.proofprofile.net/proofs/artist/834bcb92-0fdb-49ef-badc-9b0699ae0499.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 0xf66d66c0b834a41d6e0b63e98bef89a4fa37e7d4b74991319f9a722325def8ef. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZK6F2090650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc2f6217f522af624bcfcfbfbec5f7442041587c5e366cc30fd5808378ee829. 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/QZMEP2053448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b35ed472ccdb354aa9b74254d66811ada99208e20755bdd550e2a4bbbd738a. 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/QZMEQ2025937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea100298b18a0de855b83285e57bc680d8e2d3b515f4aa2df57f43b5e629e067. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZNWW2163856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56aab537874a421903ee37f74ab6de6d915c72eaadbec59b30fdbf146ecaf64c. 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/QZTB42275905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2579aff1f43a0858285b8e8088aa7b130358d710e06276502c39f155e09cbcff. 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/QZTB42275902.
Levensgenieter (feat. Lusho, Xeno & Brunzyn)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b70c0ad1c65b47b3dedfbbfe86833b26b91087426be3e46547ecf0962baabc6. 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/NL5HJ2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0d3a057ad9a08b16166681e8ea912cbfdc3ab1605d4a81ba0d18dd0bc721c2. 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/NL5HJ2400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b6c24b9c24cfc3e0c681e9813d333efc51025f126c64ab014e15c56701e4ec. 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/NL5HJ2400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0206b3bf661afe56677c9a73d82301c62bdce1b23f4096ed59cdc1f3692da8d. 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/NL5HJ2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b70c0ad1c65b47b3dedfbbfe86833b26b91087426be3e46547ecf0962baabc6. 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/NL5HJ2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b42eceffd84af37266196bc4125c48fb8a8e3b0ef8e2f0b63eee39ac674fbd. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/NL5HJ2400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0d3a057ad9a08b16166681e8ea912cbfdc3ab1605d4a81ba0d18dd0bc721c2. 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/NL5HJ2400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc0576ef17466d4d867d9719e7517d39659baf704f3458b8012aca43f16d6c9. 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/NL5HJ2400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64812d5e186baf59786ac2be27fed9089adcbdf818a2fa4a608ae67f610a8c0a. 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/NL5HJ2400139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc0576ef17466d4d867d9719e7517d39659baf704f3458b8012aca43f16d6c9. 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/NL5HJ2400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0206b3bf661afe56677c9a73d82301c62bdce1b23f4096ed59cdc1f3692da8d. 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/NL5HJ2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd1fb95dfd7d69665363dd079bfe6afb77be96b6626b36b5f5ced769f900c96. 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/NL5HJ2400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65ac22a1818166892d7b7cc3cfc5c99e49cfa3f6dfd2537796cb8bd525658c4. 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/NL5HJ2400172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f668e32f6906b1854554a50e5d25d57982a3dd335e4307dd02d6280b02fe676. 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/NL5HJ2400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c88bd6e134d1c86a21978d69d5c2a96caa8850f4c673dfba7402ab95fa595e. 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/NL5HJ2400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea097a4a9f1ce5e9e4b6ff1099860fb5656c9ec47e705a396d09f409f9d8e8d. 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/NL5HJ2400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac83b53d72dd2c234093fa289a7d6a8be4a42ce6939abeb70656d3ffdee4b6c. 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/NL5HJ2400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d6f7a4e803e8b4e6bfcc05f18f4a9304a5ac3640bba50285f1a8ef7408bcae. 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/NL5HJ2400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f668e32f6906b1854554a50e5d25d57982a3dd335e4307dd02d6280b02fe676. 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/NL5HJ2400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65ac22a1818166892d7b7cc3cfc5c99e49cfa3f6dfd2537796cb8bd525658c4. 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/NL5HJ2400172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea097a4a9f1ce5e9e4b6ff1099860fb5656c9ec47e705a396d09f409f9d8e8d. 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/NL5HJ2400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd1fb95dfd7d69665363dd079bfe6afb77be96b6626b36b5f5ced769f900c96. 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/NL5HJ2400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc7f1a7c4bd11a655be281d5ffa32597e43047dfadc4adb9030340dd372436b. 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/NL5HJ2400220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c88bd6e134d1c86a21978d69d5c2a96caa8850f4c673dfba7402ab95fa595e. 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/NL5HJ2400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b6c24b9c24cfc3e0c681e9813d333efc51025f126c64ab014e15c56701e4ec. 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/NL5HJ2400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0206b3bf661afe56677c9a73d82301c62bdce1b23f4096ed59cdc1f3692da8d. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NL5HJ2400136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac83b53d72dd2c234093fa289a7d6a8be4a42ce6939abeb70656d3ffdee4b6c. 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/NL5HJ2400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d6f7a4e803e8b4e6bfcc05f18f4a9304a5ac3640bba50285f1a8ef7408bcae. 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/NL5HJ2400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b70c0ad1c65b47b3dedfbbfe86833b26b91087426be3e46547ecf0962baabc6. 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/NL5HJ2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0d3a057ad9a08b16166681e8ea912cbfdc3ab1605d4a81ba0d18dd0bc721c2. 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/NL5HJ2400117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd65ac22a1818166892d7b7cc3cfc5c99e49cfa3f6dfd2537796cb8bd525658c4. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/NL5HJ2400172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc0576ef17466d4d867d9719e7517d39659baf704f3458b8012aca43f16d6c9. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/NL5HJ2400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64812d5e186baf59786ac2be27fed9089adcbdf818a2fa4a608ae67f610a8c0a. 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/NL5HJ2400139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f19456fc6254c0a3e6d5d9ff4148a7826bf8bad49beadf93d70e30669fa46fa. 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/NL7FG2200007.