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 0xc11cf540dbc14121463397b09fd1b64c1dd9adbf8c64883a4f06ac5ac68ec3b0. 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/1535132d-9f4d-4376-939d-be19d20f9217.json and https://artists.proofprofile.net/proofs/artist/1535132d-9f4d-4376-939d-be19d20f9217.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sò elli scrittori di a storia / Resistenza testimone à l'eternu
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 0x07509e3d4785bfe97b6fad030c1092f0f0d4b9d585b8e72c11a3c4cd5bc080ec. 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/FRZ369300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4774116b0285e70d6a770ec222718cf65a3c4650b524877ea1231a69c85a50c0. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRZ368800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b74682e37371fc9ef4be0de0d32fb958c8ea358fe58e7ea44351d8ef3d0e572. 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/FRZ368800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca5d143942df4472906bf8d0e066e849867c43f1610a127dad83bb7c7caef5a. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FRZ369300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114b40fc8dc11f4554d908ce848692a66ac3965556d4cb7a3c1055ee5eff8140. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRZ368800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d0d3f7a4b9a2a07318f23880f0060e5fa4bc6a2f64bd72dfa6508099ff29eb. 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/FRZ369300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5945f28bc9c3e892668f921ecc5b681c8241fd50b0f24e6c922c66c7a20f0800. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FRZ368800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80daef9e83c3d8cd060ba4e77fad6a0a066e1d076c264f54fdf95d29322736dd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FRZ369300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5537ada48b90000d6d40f2b93617f0ba2956beafb3dfc7f0639402bb289efbcf. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/FRZ368800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d897c6970912ba5b47394991517f52caf45faf90b79829064f78b98241acf2. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FRZ369300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590b35644da3d39ec656df87e69c753e4667d7442f4924b30bfe7d0a0462afb6. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCAHW2418093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe241d95ef1d9ab5704c5aa625683459e81cbed32e284200c04fff7173aaaa18. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAHW2418099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a628766c611e067ad9abd9aa946f4af32c1d3c2b57f5f73c6097024a1bb8fa. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/TCAHW2418109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70e203cf070ae20ecb87b073ffbf28cc78437ce2f239ff0092600157b82c14f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCAIA2439867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ec3a1a9d3f892fdbe36fce9031c8115e0d98e1c1f84bdc951c49fc306e0116. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAIA2439881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94438fbb01b9473d79d273dba51ecbb9a851ff9632f5840192e8c0e7590c11ae. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TCAIA2439884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5dee1dac56a0c97023db305f0cd7bbc728e878831db892bdcf435049517152. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/TCAIA2439893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011dd6faa83c6a016f4c32251f3c9e297ff164417f0c31f1ed243c3bb9ffe88c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAIA2439896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb780a977838572ea90d70e32fbeb56e0079b4e792606b9d464c10ce3526a60d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCAIA2439906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90e44fed036d705a9501c3bf76f56a47ad10deabeff0a458a043a9fa2cefbbb. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/TCAIA2439921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62ae9edb3d908eabd477018f21180995ec9db0b7b993e58a9cee9a4691111896. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/TCAIA2478771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65be256abc41bff4016968267eb9ad593cabbd5a1c702489fa0af4872c57ac4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAIA2478785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77dfd98b8f795de70421ab26f3c15bcb634be3fcc5e259c8316605713b602fe9. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCAIA2478789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c71a8c38c608effd717c4f744bd155854984aea309e2d04f4e9e245b0911c12. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/TCAIA2478821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5623ba7cff463c1d24183111a91aaba16b13157c045e86427d424ab078a3259d. 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/TCAIA2478925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c38c0040abcd694c5704243df9662b4e583aef675b81102b4825848761b7c69. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/TCAIA2478537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x489a15d856005a6aeac550ba26524f67b2d223bda1deca8d3beabd12aff681cb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAIA2478543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3347e5ff975a1a22e6553620b11069133d097865f00bf6e2d12b239823ccc7. 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/TCAJD2407551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd707fa873cff35e80b45362eccca910dee3b666e2ce058a0af4c348807d858. 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/QT65W2557989.