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 0xb017ea9f15625b71cad809a8d869bdf9d5a8d9178dc544419f2ceef0992acfd7. 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/1b4a3aa2-1cfe-403f-9587-601834547ca7.json and https://artists.proofprofile.net/proofs/artist/1b4a3aa2-1cfe-403f-9587-601834547ca7.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 0x6aeabe8c539bb98839a9783fb38209a03a14608fd70160dcdfccb4f8f0d2f767. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TCJPO2191089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96795e1454574c584f81e5f6a86978937ca40c9c161e869b2a41c2df05bde950. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/TCJPQ2122857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a62015922d5570bcfb0121abe6444cb13ce16fda9cb5fe74222c70b101e106. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCJPR2249920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb311233b08cbb70b25f29de6f37f0da5cc287f0ce764c1db6381e665b93c51f2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPS2263946.
Malus in the Garden of EDEN - recitation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf548dd1a962159cd2abb911670749b898239ab280064438b6cc473f5307663e4. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/TCJPS2263950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d4068564a54ff9a759215b5048063195eb71cea7af564ae84e2664c74a671c. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TCJPU2355142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf77e45ffa00195e64d2e74ddf2336e3f14e48ba0ea2c7d28d8a025fdb8951d0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCJPV2390706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7b411d4297c9833b44c5c66dbb5a3b865a300197599a42d820d6d51aec5e22b. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCJPV2390708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5ced667e8500ea76fdd91ecc04b7153086777c8260acfea0b278813eb2bcc0. 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/TCJPX2315087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde675806b9f83f81793fd652abece88145559c999cd5a712145d754bb4a9658. 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/TCJPI2522231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883bfa98a1077bc7ff91e8eaa672b5a179b17bf80d3597696d81ca51ae40813f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/TCJPI2522243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fc4fdc85643c694910ebadebb21845262f465794c54671580b76ffaccabee7. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCJPI2522248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0881ab69485efcb20d2b93f169659183794517eff57c3dce5fd858539121878e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPI2522251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e388c30bd9e359d98471589b07b45a17cc981060cf7ea956f192c53ee295534. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCJPI2522255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfdf13dff211c6e37646109dab0bf2e3a24db3871c7e5c4b5246bd99ba5e7d40. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPI2522267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3283464d505bb60407f12bfb8accdec8d61ea674310fa3f28ba94280b9e5dd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPI2522270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fede0171f61549cca456aec557ec3d1f2050b33d095de719d05aa5f2d008a8. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/TCJPI2522275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0d9d150b27e7c9edcced5e21d0b8581e4dc7381c85e917b4907fb2ff835644. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/TCJPI2522277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bc604314871273cb15b76eca23c44226a55199d922f3c6d3a463de9ae11878. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/TCJPI2522280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9b773b3f02c163ad8ffa9e837c609ceb6c32007aaa6bb88205da80703de79b. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCJPI2522285.