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 0x6dafb3d42fe63ee2efffb897fe3e9c419accff1a37bc0474b94de32d04d00a60. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3a5ad0d-001b-410d-9a90-eba76d8e4f81.json and https://artists.proofprofile.net/proofs/artist/a3a5ad0d-001b-410d-9a90-eba76d8e4f81.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 0xe18ea5c14acc6f21a69ae2341eb413006eeb508ca8f20e8a19a13ecc038e3201. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBRKQ2575291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2f32b60cd5e87469da980bf4ff17519ba3a4c4928f9f77e005f47ad4d49a9c. 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/GBWUL2571835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5151963f777743101c9a9d9d13db7f21f609aca3ff6bdf41ba7e3d56de34a46b. 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/GBWUL2571853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6711a36b388b368ad7870f3d7d80ba870295614b18bc5444f0142d3d3149f2. 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/GBWUL2571866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28d30bfddc136f06fe32624fc72b5aef0cd1e8c5fe23cddc7423a33cc4bfecb. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/GBWUL2571870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1cb65e71d5f444b625aff93c5d0f7da66636eab5ba866fe6e652a6b8d6baa9. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GBWUL2571847.
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 0xf26dfc329a2fb1028e4afaa37972c4dc668bde388d76c63c59b22d230a859748. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBWUL2571855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fc18555d2a821bc9d7907379e47d90f74813eafe717b60ffca295b7d37edb0. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBWUL2571860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35cdd8f9fb730aab46f9ec3f588d35fefa01c1b5d6cb5d35728396f3919ed93. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBWUL2571862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c532da942a045f7b45ce9b9e4263b3c05781d9418b16ad434c1453380b9e7c. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/GBWUL2571864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c937b5b37a9945c8d1202ceb8217156957de1ecbdb4397d638c9beb7c11dfa3. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/GBWUL2571869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc4eec96926d007ae0b541deb5efb98ad72a9144e2feb49fd8ee5aba2479c37. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZZ8A2530570.
Disposição Pra Tudo, Paciência Pra Quase Nada
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f68b08e666bc6f47633a54112feb4fd6c01b50d0492a000add59428aa425fec. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T09:48:31Z), 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/QZZ8A2530482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cba144d4c88c9db1f24084386e52897f4f3f13c545513522b78aa4ac365563f. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:47:05Z), 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/QZZ8A2530485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ba0a8ab9f94fe7940d54bd4527e05ec30b7673bfc0967aafee2626c2b1f0b1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZZ8A2530488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335dcb3d48d26f230942463b34c4a9ed3c9d94fade152bb418548fdd07f66fef. 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/QZZ8B2410609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce055a4cf6fedaaac744b66dcea3032230a04cf40691eb1b05a4c9ca19c34e1c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZWDD2598487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08573537f8b05a2d43ce0cf2399e9c9bea59a8f92a324b9f553d19da23aa2b1b. 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/USLZJ2534597.