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 0x100bcc5c37a0694affd0b362212f907ad04765b37d54b8d3495df6a557dfb039. 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/6ce95d5c-5d8d-46c7-99e1-a032301fd1f3.json and https://artists.proofprofile.net/proofs/artist/6ce95d5c-5d8d-46c7-99e1-a032301fd1f3.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 0x66454bf478b9ae7bdd95b721ab09dd6696ae91cbb4c3010d054cfd400cc0e3ab. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/SEXZC1101101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7027c9d269048263742b17228bf7f105cf7457dc14c30e876b1ab441e25965b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEXZC1200404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0737a3abfcc3ceb7c7739f6b4dce3b4405d377d92990c1386c7883a309408469. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SEXZC1200405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab9922f737e67a17a77be208aeff72c61620c6a9ef2afd7fb0bd4fbbf3340d4. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/SEXZC1200301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5b1668dccf86d76ed73b211c1a4b035866245f8129e0b156b7d268a5b1591c. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/SEXZC1500201.
Kör vi tills att dör vi (feat. Natty Silver)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d00758d78c1e8ef6a953180beee557f3969341f3ed47265b61ab9309dbb320. 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/SEXZC1500301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5b1668dccf86d76ed73b211c1a4b035866245f8129e0b156b7d268a5b1591c. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SEXZC1500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09f3eea9662cd42412d817c0f31fa6c6dcc6a2f5eede28b812b15b26b50c7f8. 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/SEXZC1500303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dded14962a978380794cb8ad58a0460a1fd5e33856f7fc7643448de666fad30. 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/SEXZC1500305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42021da1329923ad704c39e64a9806c86a9a5dffb33d7c8124d7f76d605f989c. 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/SEXZC1500306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27cd9f53f2cdbd536474ad9bbc0698725fe2e56e20cf35a0ce331ae10ef5b94f. 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/SEXZC1500501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b2d1b19f27c27fa1bbf28d2cf8bcfdc358201abb8c9670e63724589aae45f6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SEXZC1700301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda4a836986de869292ebd707b3f196a04df6546b074eed55ad9ac422db1621f. 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/SE6XW2255732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339097c35e72c927aa69875c755a2219a486ce5e00fac0b24219163e5ab07abf. Chain 2 (Bitcoin): anchored in block 958613 (2026-07-18T21:35:09Z), 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/SE6XY2320992.
Kaliber (feat. Mwuana, Sikai, Linda Pira, Jaqe & Ikhana) - Remix
Kaliber (feat. Mwuana, Sikai, Linda Pira, Jaqe & Ikhana) [Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3600187e8abb9b67b3e62ff616b6426f1f04d1305358a057b19f8557dac1de68. 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/SEXZC1600301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0bededb968b57becb2421caa500481e0fc0227eac23e47a82a632fe8bd35fa. 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/SEUM71300940.