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 0x49aa25563743cfa1f61d5943c654b2744e4a18285bda3ca50da673f2a03f0e2b. 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/95940995-3d30-4998-b118-64d33a196859.json and https://artists.proofprofile.net/proofs/artist/95940995-3d30-4998-b118-64d33a196859.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 0xb815372e14cdbedcb18f552a439101751e113cc0628fb266a727b0209166bbd2. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZ8DB1700235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6939bb20d929c6ae43d53f5a08ff5608bb9ceebaa8ab4a03371c8a81a24e12da. 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/QZ8LD1790035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc81f89f263cadf5a901a882367e6b9cbf82c02ea8fcd2c3c1e716dcee7a658. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/QZ8LD1790036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98206c55c628d44e19d3a9d9da599ab21b61b01593fe520190b90018da714584. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZ8LD1790037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc6f2ced3ee5dbcf73a9684b4dac0c607b8e3eff96250c71bd5e507873c27b4. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/QZ8LD1790038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990dd45c0a45ffec9efbf7d45bff0d1e44927491510bee8a1f30a83b9ee803e4. 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/QZ8LD1790039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3849b2a27bf93e6ebe0dbc437291aca6fa265c9ad5be475456c6c5be3f258543. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZ8LD1790040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9987f1a445b52e58d308c6e9935d6ca6f7760ce44d0b902f3d0b91eec67ee421. 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/QZ8DB1700283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d47326c153227fc98c96443e16c3e347ed0efcb8c38838aaf1ccb5793c18303. 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/QZ8DB1700284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48c411ef37bde3a1ab27dc88c0ae42d0d40911ca7f3fca08251922843b28628. 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/QZ8DB1700285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7c5a542b0c5adc27775cd087696825e3f4d5be6ff5bf806e6d42afc62ee5eae. 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/QZ8DB1700286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b859b043e36566ca9b0a79ac1735bf328062ebcbc8984ee722c3a874cb5cdf2. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/QZ8DB1700290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988d9cc4ba33a88121cbccee454220e482d6766884b57a69f58d216b0c1afcab. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZ8DB1700291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf80885c4bfc50e30533a76019eed42ecea5bf43c29900df2697c30db6eee43. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/QZ8DB1700292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5492c0f123e13a71b557fa182ae25f49b4609ab0bc4fedcf8f2fe0aa9d384871. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZ8DB1700293.
Evolution of the Disney Princess (but she's METAL)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x682c8350b94be3eeef4adc381e0cc7f421e828845c33e8567896d155048a1b91. 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/QZ8DB1700502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d501c18624b58eacfb835a964bd20b7aafb3884865af3a4466cf5986b08d14d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/ITG272500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d501c18624b58eacfb835a964bd20b7aafb3884865af3a4466cf5986b08d14d. 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/ITG272500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25344fdcb83d3464a66c2912d8a33082ef14b6df11d8e34eed69be2d940f910f. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ITG272500106.