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 0x3ed6d31bfc8576486dd89244a47199ab2581bb900ec49b4bd188fe31211eddd8. 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/209223e1-afa5-46f2-b389-205a7bef6db6.json and https://artists.proofprofile.net/proofs/artist/209223e1-afa5-46f2-b389-205a7bef6db6.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 0x55cad611015f6ee32f221e369ec0330152bbbcd547e2000aa99065d5ab2792a2. 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/SE6SA2356207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ed5b55975995b91f57dcf01de4bf8b14c9f9a32b0ba3f6ef1c62ab9b98bb99. 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/GBKPL2158835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a12d057f0c259aab2b8b61cb1a79d91382fdf23b2a9c44caa5812c962564360. 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/SE6QE2277177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc5637702aa3463e1a0ad640b90a62122204d455903ee0ba5b875b8f5bf6539. 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/SE5752439267.
Lighters (feat. Oscar Ahlgren & Rasmus Hultgren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5250486e7f2d3366ab13acd104ba52138d3369107eabfa2398e55e90d0b42a52. 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/SEBGA2300082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ef44253faf7d7dc47e571e5ba7260abe15bbf38c96cd357ab18aaa72b06e88. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/SEBGA2100462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e55c05fb0e31bcd43024347979658c88133899de20a7a27951ad06df2622397. 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/SE3GO2113101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe447ef5f4e1a20b881d27f67d863cddf869142586362ab9adaa4c571ff7e2362. 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/SEBGA2000403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1853c5b84d86764f959668e38b6e6441fe0e72184012e0dee5fa3b88e0dd16. 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/SEBGA2000559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf502212d4b72d52e7402c05c0dbfa592057d7609e547c6410be6c366779a151. 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/SE6SA2401499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf75b8334ac8d332d4a5ee94e7cf4889f0ba13d0748b71e3b47a096410835bb. 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/SE6SA2401500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8610a8fed13c6883686e158d39b99e28c80bf6032103ae7f041a9377e8157b. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/SE6I32445548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d38c96420c91de8e615f8b17218cfc0c25d9a800c34f10a68be0a512c49ce5. 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/SE6HN2431220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc40268f2a2a337b75e70ad3af71e708e6c9406681756e708a916c5660439f00. 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/SE5BU2460483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183d2cca3be54dfb42e0bc0b42de9a3db2e4ebec3f84cd615054c9221f9ecd34. 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/SE6QE2361159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b17a8cd8eb79b027d513c3a4839ee57b9d072a1d70687111e19d137436579f. 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/QM4TX2389388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8610a8fed13c6883686e158d39b99e28c80bf6032103ae7f041a9377e8157b. 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/SE6I32445548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f6d0b9a2645f890c938ca1b638e3346653c344c4afd8c6e71af3cba8d9198b. 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/SE6I32411382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82d38c96420c91de8e615f8b17218cfc0c25d9a800c34f10a68be0a512c49ce5. 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/SE6HN2431220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81456748c88317598ab8eedff1a41d75f8f5ae247e46946af769685db21d559. 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/SE6QE2420241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183d2cca3be54dfb42e0bc0b42de9a3db2e4ebec3f84cd615054c9221f9ecd34. 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/SE6QE2361159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b17a8cd8eb79b027d513c3a4839ee57b9d072a1d70687111e19d137436579f. 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/QM4TX2389388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42eb9b6b6f204bc6dcce628a7d5ee14bfdf0d2e89c13953836e077b2d9af038c. 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/GBKPL2211997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c068da5383fbaac7fe4cfa77bda728a9d2e5c59d4e01b8c04e64474f2a0ba5. 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/SE3GO2111801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98764425cc10635684a1587ab5531245cfbda3241e75bace894918060ee403c8. 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/SE6HN2169235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347dfd9d0a1936b3bef5f87f00e44bd88d0fea9604684041127b57e6da0fbcfa. 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/GBKPL2019370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca290c1d8f971eb5f0059a26a46768f210e7e8b54dadb5b803612c0ff458661. 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/SE3961900601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf149375292d8bc255ab6479ecb761f17cbefb2ff2acf9150f10e1a349f17950. 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/SE6I31930896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57077fb550d86fce2d1977cf8b912888d0edff460e9ad734b67b7ad884905b65. 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/SEYOK1928661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e03b6a54a5a9c2f623dfc15956771895ced28587649f02cc98414e7d0d032a. 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/SEYOK1926204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fba3dc0fa8c17b51063fa2e5195a77133b5ff2fe8febc3772ed60c95339021. 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/SEUM71800118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff18e325cd6711ab8d0739b7e60e6112f0f9d11bfd8a4073d8925dacee3e36ed. 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/SEUM71800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f9d9a4e3032440c7e8dd01939fa5e16ae49d120f0e7d8748e4fb188f1b9153. 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/SEUM71700902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dac9eaea42eac24e801064c4afdcd4f0f8e0930a36f705a2e65c79e8f8697f. 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/SEUM71700638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc959f4c7cceff4dbfb39833b67ea73e0187f916337c3504e8e5535bbca939592. 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/SEUM71700607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3472b3e253353d91a5ba30ab8c3c4d79e565d2bfd21d5775206e3879d7e4716e. 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/SEUM71700139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e2efb74fcde818196da75125cf419529b5cdfc1637c3b5534e03d4a8194ab8. 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/SE3GO1602501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe447ef5f4e1a20b881d27f67d863cddf869142586362ab9adaa4c571ff7e2362. 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/SEBGA2000403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1907a4f0273f4825f1f33f2b842768feded7e5caf55719826cd708e00fa91277. 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/SEBGA2001588.