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 0xb2aeb0b160e6e3131ed1a2f04d5f21ead14a8246e8826fea88a843d42287db8f. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/522cfc01-8e29-4e2f-8e1e-1054af996a4b.json and https://artists.proofprofile.net/proofs/artist/522cfc01-8e29-4e2f-8e1e-1054af996a4b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Apwood Recordings No Party for an Old Man, Vol. 1
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 0xc4953068b6a694743a24db5602d2935b8fa4bfc14fd5a6a697ecde89c9c0130f. 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/DEH742317454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa0892f070d44a4a219fcd8499f15c76ba3da1f9eb39ea52388eeed650fba57. 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/DEH742317455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b77568e2abc516c19d5d4c7a2ce1c2eb97121fe014109574f80973a08e0a842. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEH742329798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae55c081d3403aa90f1c50daa0268ee867c4b429d6218d55dbead337a707a506. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/DEH742329799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f80db2d9a0b9cbd6450d5f94ea3db22b867f90bb369b576e92190d21ebbc64c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ATR981303323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ac905ce8fde0bc8b5bd1b1e60c56e0eae4669384f9114a49d796f2692fe6858. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ATR981303324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84635cb55a4eff8e53547778df43b52de0cde4a9ae1e12486497826c823b71c3. 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/ATR981303325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfdb97c9c842fe3ac2f52777d33e253ec68e0356aa01baa851d52590964ad66. 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/ATR981303326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fa0892f070d44a4a219fcd8499f15c76ba3da1f9eb39ea52388eeed650fba57. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEH742317455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751e480f55e314b46a1e07dfc70af8f6af708e7e6b95769a44a7a98eafb21162. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEH742317456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8d909399a69ce4bb43c56ab4904463689255926d82f6516266b59a51434ae3. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEH742301579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7f79aabf06bb00754631bb19b0d9fa84ed962c31f43d35bd1502ad9b529ece. 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/ATR981269133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ade3bacc734d5e7f5e3e63a3041facfba218d8c585cf0cc87656f1d47292be. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ATR981271046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008fe772975dd80227cf899bbb246b9fe13a46eda5ab3136b8c4903b2656cee6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ATR981282639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91a7b82f3d5cbb182612b691b82d10d20fc359546ffe6351281f6cb97581492. 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/ATR981300073.
Stimulanz Gamma Loop - Olaf Apholz Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d77d7be4fbe22d0adee66bf2575c34c1d052eacab0269c6dfe44bcb3c9c78b1. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/DEH742329491.