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 0x6afe31edc5608ec0ee9537df9994ca2b3ccedf2002bfd968ddedc549ab23bdd3. 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/ed878041-33a5-4248-a9a9-b5b172d1c4ce.json and https://artists.proofprofile.net/proofs/artist/ed878041-33a5-4248-a9a9-b5b172d1c4ce.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 0x32714e85e97bd249c4361b2ba5434169775d603cb5ae3076e05d3d73b17b5532. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SE5752038900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad90ac1fa395bf3356f5f160b2813cdcb0fd220f6348f9d01d5bcceb2f8e78b9. 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/GBKPL2098127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f80e1f147e5e22d647dadfeb4709c4e09435b62317bab5ebcc47bbe8af1e82d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBKPL2007307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347dfd9d0a1936b3bef5f87f00e44bd88d0fea9604684041127b57e6da0fbcfa. 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/GBKPL2019370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafad277be92da8a0d2b0806784b87074b51b77aa7a37a9984fdc80145ddcf4c. 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/SEBGA2100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e55c05fb0e31bcd43024347979658c88133899de20a7a27951ad06df2622397. 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/SE3GO2113101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebee4cc2592d5725e0dd727b875cd0da7facc5f917a0351ea62ed068d645215. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GBKPL2169374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22ea72cb873c218ca0fe39ef5a16709d6412311c64e1761f996c8adac904a85. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/SEUM72200654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b90fdaa3f42d337669c7dc10d8482c71167ee0b12bd8d03ad36844e0ecc4fc. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/SEUM72301324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7608a4fb2a58034be28d6c1bfc4b7db61913fdbb093c3675a8a76a16cbe5bf4. 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/QZTAS2244564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa540a00dfab430c8ff4ed3e031ff18827d5127edc968c1c1b7d99f13a3772f5b. 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/SEUM72300671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd08664857f2517bafdd237789d08267afee227ed0f038c07d541a1acb0acfd9. 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/SEUM72300390.
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 0xd231df04d4fe6673f4b1b50111165cf5990da44b78c132f6f7e0c56b6b83155e. 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/SEBGA2000705.
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.
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 0x25bb616409a9e92bdf55e61bb6dc041689d7447fdc6b36dd61c89e409bf05133. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/SEBGA2200205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe447ef5f4e1a20b881d27f67d863cddf869142586362ab9adaa4c571ff7e2362. 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/SEBGA2000403.