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 0xa2cb6f6dcbad430fc7200fb3a445b2ab766c5dd1e4d32c3aa33f5d50d47b26b5. 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/7a1aef2c-07b3-46cc-8c3c-8c3ffb004f8b.json and https://artists.proofprofile.net/proofs/artist/7a1aef2c-07b3-46cc-8c3c-8c3ffb004f8b.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 0xae85e98163c50167993231fa0bc01cae9700efe773fd12d5d871794c0d22e06d. 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/QZMER2376785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff50b0a2c9c85046c318e619356ded16111961317233732c87893c9067e0fc79. 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/TCAFX2173303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9da80446d85a06b3c1a2ff0fd984f28d7408eb9cd4b23bb657665b84cc68a8b. 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/TCAFU2182690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce77701cdef2b4dff05dc73c844a0cda7886df3bf33e00f0060634dff2f06bd6. 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/TCAFS2143191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89a8e5683b267bb6f5cb7d4d3292ba490c746eb89b24d5f519220e4f684f004. 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/TCAFO2151464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a25a17bf98dc74474e83aca5ed907d9b18649ef3f2cec9e77ce1d0cfc892d6. 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/TCAFK2192106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd509a6d1729c84ab7f0feeed8225442fd26eda8909393c8a7f174acb659e3e2. 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/TCAFJ2142916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc45a3f9eaf33f6614dfa7a2606f3f423f15fd25e0b3a12403af9076fcfce2e. 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/TCAFF2029681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd491b93a770aa282918c7477d3f62cff90a368c50aa874808fbede0d69e299. 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/TCAET2008607.
Playboy 2021 (Måste Bara Ha) [Feat. Truse Tarzan]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb57c84fd47361d560c350396957b87253d7e0a72d18bc8cd88701f5542d2ab1. 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/QZES92162204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafdf5eeee679bda2eac320f19904e16cec4e7b8dd7c283f2c563064786357a5. 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/QZWFP2380781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65810605938dd141ef0b338f0a9ae8b038414b04a7ba57d011725eb0991bd64. 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/TCAGB2263093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a6cc22077f4224dd3e55d1dc66cff4857a63c4ae95608ee4a5bd44509778f7. 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/TCAGC2241968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804c76f4525bf1465d3fdbdbd49b80d2103bc2962d0ee16a6e22059d3e1cfc78. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCAFN2127066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bc1e704dabb85c80850196cc12320272df3fa8425e6a1bd454a23da1d137c7. 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/TCAFJ2100787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5acd4b3a114c7df0dfb719ecb0d2c234988185bdfdb4c618583bb2d84e3a32c. 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/TCAFH2040942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4b8f74f22799839e423ee97df8912bf2034bbc22678c588682f8fac98b63cf. 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/TCAFF2034126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2c486315dae07cb353c55a9a08bb48870a5456b44b8588e71059584b489984. 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/TCAFF2013148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f5edcd95de3fee5950029d924c4a53cf2dd1cc4c7bf8f8f5a1681e04f95395. 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/TCAFF2000728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eff83f1bd2909c5260fc84d20db92327b807556839ace6fba405d718d820fc5. 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/TCAFB2079061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ffede1face1f685183c61cfbfc47f7b31cc77473d2049b2ed46683442726e9. 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/TCAFA2077231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af58e97b75ab0467af9aeb4468bc03fcedfa1dc96ad22f7d4ff3f55267ea7d3. 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/TCAEZ2018335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60db0203c21d10ee0839ea66610d54f8e6a56706f74e924a8ebc7e6e5e3d1f71. 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/TCAET2084218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae12030a126f435a50f4f0d54bdd1923a70c76b85a3fc0d51a68a472740b00b. 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/TCAET2001670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8877e062a76f61c6e70534aae1c7d2b54aedea5d9ef04dafb65c886460b44aee. 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/TCAES2073790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08aee358471a889e9b025ed36b324ef17571ab595880d9936a928eda3e8ad358. 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/TCAER2029875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00df710cef96d7e3fce0962e6a1f179d2ef56055aff8af6d3c0dfb4acbc83c13. 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/TCAER2088999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf7ed3b77c3e23c2e468cf930366ffad2bba8fa035caca1535df843bf66a86b. 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/TCAEQ2096395.