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 0x937a026b1a3729ed72249b307908f3e4918ac8ec1e978837c720c8f593540c6b. 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/cd00c857-4518-4c35-93a3-969eb5a4545d.json and https://artists.proofprofile.net/proofs/artist/cd00c857-4518-4c35-93a3-969eb5a4545d.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 0x98c826bf6fc768ad24aaf8b44612d8f91166336af65c9ff44a8c137feb8f6a93. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUA1D2324260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba4a63ff18cd96c9bbba789af128999f725465679fc9c8f71eac3014afc3cfe. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/RUA1D2324261.
thats all (prod. by enteernal, blessque, talktome)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954785173da4df1e60851a3097c682677b79b82bcced98fccf74072fb85f203e. 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/RUA1D2324262.
Мэйсон Маржуха (prod. by garfeelyork, shimly)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80758b75bd765b2bfc21a15740f3a700fc211ff054f5e704a9ff52e7fc13db06. 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/RUA1H2324282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4c8d25cb1cdeccb09b8e2fec1fd2341d8b2153c374ff725c690a52adf82810. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DGA0M2369427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455153b3a68721bfdcd34ae76e7620cbfdbac47046504aad98259b54375e0be5. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DGA0Q2342582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933880828f07e8a9ed8018de50ae1cf97477f145b03a5382a8890582e1512d15. 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/DGA0Q2342583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5996cef3b80e7cf8648837ebd0dedac60bb86ac19f222fb3102ed5d864e801. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/DGA0Q2342584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd652ef5d016710baf97a2ab383cc1a855d3a0218df9d8b72dd88bfa0e1f809e9. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DGA0Q2342586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f9a362ab7dd0b9f83a022a26d7ca1eb8b95a89f8d84419522dc519f5a343095. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DGA0Q2342587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0218c6e975f54cafc1de59eaf7fc0ff6433fb508cd1709397f65130be4b69ed. 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/DGA0Q2342588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55e405d7cd3ab538d95a1fce5fb16c6d92ccd30f7f3a68d81638a7c398c071d3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA0Q2342590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab8a171a1742fc0416bf3c41410c34c4846de7606be207a609c726fc8439be9d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR96X2424761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ded8ae7c77a4e2d5927f5d75dfe94e3a15fcec5796a0ccad5d92443e8b8b681. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/DGA0M2406741.