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 0x1105138e8d3d666776a36b4086deae9bddce570a73194b4b7869d0bf296ee8e0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23b43165-df4c-4cae-bb37-fb492a36b8c0.json and https://artists.proofprofile.net/proofs/artist/23b43165-df4c-4cae-bb37-fb492a36b8c0.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 0x2acc1ebc7f373fc1eb7ea0100186dfa0946f6fe309069923919e3950445d95cb. 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/GB2LD2310193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c261357de80fb3af0ed36a2c385afb9c8592f0881df3af1d9701259757fc0a. 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/SEUM71900991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482db6695611e8d3ac3adea793e2676ea37532967ad7cf2f70dc03cbd1f2584d. 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/NLM5S2101262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5a43f45e324d4ba5e8cd97f72d989e29fdbae109d3d7fd74b53840de263d0e. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/NLM5S2101263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353b365e4b88e7def3c7d886c3d975fc95bf942b52eb0fbd1999a7760331d549. 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/NLM5S2000827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x240396d28c8776fb671b0537f6e32d1bdf817d32da0dd18cde3be9d61c33be11. 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/CA5KR2473502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19344950e9bcaffc3e333f0e02b3aea39e7c15e4797a8dbec8d3e3f044a9fa4. 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/GB2LD2010019.
Martin Garrix presents STMPD RCRDS Vol. 004
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482db6695611e8d3ac3adea793e2676ea37532967ad7cf2f70dc03cbd1f2584d. 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/NLM5S2101262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700b935955e59aee0e14e373d96ef6b2b9c95b2716e18257d7eec55ad6f4f635. 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/NLL4S1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8779e11c85caa81273fdd09a44158fc51b759fbffeffdb6c80cf707b7c112f17. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZWFL2369028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x209137b6db914072280c80ab5a2ee36c0e7082fadc41cff5c18d20786993207f. 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/NLM5S2000918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079b38ef813ec932557036458e8f32f88de08e751364d89cecd022a12700d122. 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/NLM5S2000919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32239e3c8b56a9a125149661c502fe18d123a62dd3aadd541d5e209a3de180c. 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/GB2LD2110180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4348ec31878e598c1a4fb86965d8b6aacb86e830f0488b771b128020f368cf6. 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/QM42K1903710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe521997d36decc93744e36616cad127521b16373db54abf22a382d3e2eee77eb. 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/QZHN82295602.