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 0xf84c448f9dd29e55be3d6b45fc05ab94a7755e8edb1bdf5f76e2c04b82d2607a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d407433-93fe-4cf7-bc59-b3e27a233cb4.json and https://artists.proofprofile.net/proofs/artist/1d407433-93fe-4cf7-bc59-b3e27a233cb4.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 0x07a36ae55cf398970e894da0148c707c88f5b557e44502b23bff0bd9b2196020. 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/NOXPR1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7d134cd18619814e3ce167fafbfc2737440991bc2ac0e38e3f4061f312c69c. 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/NOXPR1800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf49dfb75b7f31b294176b91798c6f98d34dc1295a3d3d938d3220e55a947ca. 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/NOXPR1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2c3b743d0e835bcdd9bc9f77ac5b1023163cb25063c0dc273707a2f44bcc44. 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/NOXPR1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaab3dcefedea106212f62b1a9c998eb914dbb01d10172e4a0eb50b9bcac5ffb. 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/NOXPR1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cec6f0ad4c1ec0cb8a785b4eb5a1951a763c72e33ef27a110ac17605b775e0. 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/NOXPR1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8efda5ebf73f314c04b5fc5ae606e4be3e7e3049931abaf57a2eed0af77660c1. 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/NOXPR1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff86dfb963c381a062c948ee2471ec1d7f6d13a010ec108d3a2f123296e0e65. 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/NOXPR1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4776a84ead262f6dfec7fbf9751e58e5dfcf58d1093ef83900aee441aec042ff. 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/NOXPR1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f659658f5b614661efd89caf507aa9741a695ad7fd227de39b0397512469837. 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/NOYKL1805020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ecfd2fe5ec59df89c1dd642585fb953d9ae3da7a6baa428e7b9ea3519e5a32. 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/NOYKL1805010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70974c13b3afc1efe9ddbc95b301c7b9fdabaea32cf759fed6ecbe052ebf5ef0. 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/SE4OX1600514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a74fdee8e3b87ebce45be04d77f3d14cbcebe2ef0953f008af51949a228f454. 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/SE4OX1600504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c3e6a46e077fee848b6e9f3420767ca93bfc01cd137573b47e3f3516d438903. 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/NOAGW1500038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fecdc9ccfc9cc63c9bfc6fb9b87ef0841093099bd6e2fd64bc8090dee92f46. 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/SE59D2012702.
Wollahp (feat. Nora Collective) - Med Arif, Unge Ferrari, Philip Emilio
Wollahp (feat. Nora Collective) [Med Arif, Unge Ferrari, Philip Emilio]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2306f69842d83b88cbf52f5dc4b0563879d6f0017c15b9abd64e7eeee6306e88. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NOYKL1503010.
Bulmers (feat. Nora Collective) - Med Arif, Unge Ferrari
Bulmers (feat. Nora Collective) [Med Arif, Unge Ferrari]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5d1997a6f143d79e1e9beb1d4615c4825fbb3067a86b746fbebcd091108424. 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/NOYKL1501010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05674c6f5fa3a808e7446171211b741ff7af0501d56e45422b14dfc591c78ec4. 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/NOYKL1801020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8ef0a29de0460493dfa7eebb9b1d5fcce28cd170e2e19fac8744fed0a45ff6. 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/NOMLN1801010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e920cee810501cc5eb0ef5ec5d7f18f02527951cdffffb6b440f61a321bdc4. 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/NOMLN1801020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161a7810862df21ffab189f99d9902312c9f56c4de1afbf6c7f73c921edfcf5b. 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/NOMLN1801030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa67ed619a050501ad250318e293d69e80eadd4e505daea162e616fedd009b54. 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/NOMLN1801040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e74f3c5e37368f58fe348386aad9b0f70f689420eaa23bbb45e85dc9affa6c. 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/NOXPR2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2367badc6ad50984830cc7abea2b92f0dd3c0c9163d9dcf06ba4f2936898b5f9. 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/NOXPR2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066ca803100c4c9068efa679297d773e4bec3e5e2bb64eb138bd618fd70d7428. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZBRF1831108.
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