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 0xb779d696f252de4d8b5ce1b8d7bf5f280acf110dfc09a1c5cf77cdd6139f2260. 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/9c54cf75-59f5-4114-a829-2e871df37518.json and https://artists.proofprofile.net/proofs/artist/9c54cf75-59f5-4114-a829-2e871df37518.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 0xa75933349beda6a1e47c5be7f6468a86ad36dcb3383fad4223d71748e0fd99f0. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USHM82062250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ea13e291d4d25bba86de2b5af8dbd7246eecf20fba33414bc9e89abfd1de12. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USHM82062251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88323f0146fe88f3d6440aa6970b7c3b3ca51e2a39492450ee92326cf559cefc. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/USHM82062252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0146d0b33009e6088860f02e6bd42fcd66e6b3c5d611f68a73b29ac4d871f025. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:30:57Z), 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/USHM82062254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52696491f740baa98a80a998706030b502e485c23b9f0d9e721372cb9645735b. 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/USHM82062255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f91224ecbd1529bac0e108c9e69a6a99dbcc5569af4cc114416646c6f6b3e7. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM82062256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490828193e8762e2f997c3c1e45e5d13054ae8e3e5ba8efe120ce8c540eed224. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/USHM82062257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646e68a5c443fb1ef2a32336d3bbd3616dcf118341a19b974dfb91ece4f16b3c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:19:48Z), 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/USHM82062258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cec5eac61ecf81373ef0d9ae0d0f174e2693881cde41a531c819872de8c2535. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USL4R2004004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db02d0dab16cab57b64b79cae33c6d3a4ec3aa7f7510d7de7e4faf8a0a3dbed. 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/USL4R2012714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c42c2dc111a83b789371d720d7c9c0e15d1f53fefe268b36c90b57dccc4628. 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/USHM22138484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9125608c05be3e2673dba650c5214f360f937d0e9153b88053226cbefc6eefab. 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/USHM22138489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9aead6538bf9ffd906dddc6d1bc0a9306d986124b1f8096644e0b7b35857274. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZN882235354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7ed798aa6c463c57d85b2d6e881b84aba5538b729e2eeb185ece0dbc565156. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZN882249184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bd5ca85010141e0c21e0cfc8c549df848f935af394ebd9a28a5b54ad240715. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:01Z), 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/UKZGC2201007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7255c0e35fca7819b0d8c0e26b4063a19d436fb5b5dbb8a9be8a67ad27c944fd. 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/UKZGC2301031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e10a70b921beff27d57a0140cb86713247f47f66b6c59a5b663fa5df42683eb. 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/UKZGC2301290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729c7d9e443ad8d0ff3730f457ccc977131dbcdcb904b99425b9f741b884d10b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/UKZGC2305546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58857dd87767e8cc8fbb9903091c5e68773ff0b45da0996bef0584237a88329b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UKZGC2306918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46cf1ed1f5c505dc0fc9b26363889eb940557f16ffa2c94b489d2e4504b636d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/UKZGC2308245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d925416e02af18474bbd544c47a067dff34fe526fff882c7e073b9db12c9c38. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/UKZGC2203144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31214338e78c020e5c0e09c656adae800684c3380d81b075663451eaf7e0c579. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UKZGC2308249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3001eb4e404936af1c08352ac8573e033cdd3d2d30dca552cf02111d94b85c13. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/UKZGC2308247.