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 0x4f7b288ecd8e1e2e26a6400268e7c8319e901dc26509f463f1a75aedd0c3d95b. 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/0f06fbee-cbb3-4e73-b4da-2f872b97e3af.json and https://artists.proofprofile.net/proofs/artist/0f06fbee-cbb3-4e73-b4da-2f872b97e3af.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 0x792aa951ba70aaea1cf465dd16e652b5d46a80a08ce135bb0fc04e079ed4c633. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZEKE1920670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae01598675197de990614451c7a7f579767ebde630a5de007364beca5351343c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/KSA002300272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba33e7798df189f96b1f0cee2cb7a1a91318d2de5c19d8fec9a21cc64ec49ad9. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/KRA252300847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9c839cfc93b2932609a46c39d1ef519825e7c421cabfa0fd8cf3e0154cffa5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/KSA012339814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd21b2cf05802181248cac3b5cecf800e96d05176fe512c70036773ac80346ea. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/KSA012367111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863ccf2658364bdbdbf44e6bf9a8c15064f43da6ce279d12815af281117c844f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KSA012375243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c8f90db76a1199d6cf6ff00eb97e040483ccdaa207baea2d86904f152ab62c0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:47:23Z), 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/KSA012381572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f916e5b721621527eeaf14a36885902ed585ea3c9735ed294699af6d90ff45. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/KSA012408330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5402a47434f7891d89d9273fc781879b6978fc576b4dd6b32bd85ab715f85cdc. 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/USDY42044834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bfe76a8ca00d2ed0eb7b08e38c7a0ebba87b631cd9534aeb6803c500e5477d. 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/KRNAR2352291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805d0f6581ceeca60cc8e8ca1ee11f2afdee6c73f10a8b10143a8eaa33ec48fa. 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/QZEKE2017126.
Wallflower (feat. Son Chamchi, PARTI CHILD & kenessi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d528bf7fed70b7a50dd3686289b98823f8ca7f0d87564ff15b65089af42fd75. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QZEKE2014232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dab5237ba489c68ca91c1e4a7e61d5eb6aecf946a2462373f6c358d8d8522f. 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/KRMIM2013663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cefd97d918ac388cd2eded71877a76106cfc8aebbbdcbb15e627de8cd9ca8b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/KRMM02304944.
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 0xce90f4522063352f7aac5e7dab8e84deb17be24d6641d4a7ab15e1e8bbf12a60. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/ZZA0P2407419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe395960ed3b4aa593f33e7f797215eb71de5afedb8a0a5f5388f64120cc0a88e. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/QZF452001577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641884751e7a80734c0ef7993f3a2f721941c11fd8400055e663f008053a400b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZEKE2014236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448cfc589ecaf05c2a8aadf291e921d180a3daf5caec6e560aa0ed2cf5b6ae12. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/KRMIM2465670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37237c0fe5ca238d51266d12b571e2feac479435cc5638ee9d2aa92dae2aeb27. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ZZA0P2402095.