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 0x3fe287026f800f403142a680709ca0ad815144246c4d0710a2290ab7de6e5290. 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/95110b55-3b93-49cb-9660-d09d92efd7d1.json and https://artists.proofprofile.net/proofs/artist/95110b55-3b93-49cb-9660-d09d92efd7d1.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 0xf7c1d4db0db27c02365397076492f33ed97ba9e7d3bedd1a87bea7e9fcd396b7. 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/DEKC42400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4301366d403fb86c7928f07bf7d134cdcde9f16fd51d7c9754e46288621a6e2b. 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/DEKC42400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6301e6d2a8acec9b4e340c071b08041edf5af6db50cefddfff2b200316358d34. 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/NLRD52303921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254641b3b136ac079feffcc734a7887480c061612f5878d2bd8da89a78edcb85. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLRD52303908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d69033ffdae6b6c4fe2de2d281da0b4a3e6616b451a0eaebe7893ef7e6e09a7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEZC62410203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cff429c31df81cd07281d001125afd976e103ead6f635184cf25767cd089262. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:40:42Z), 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/DEKC42300095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf953da12bfaff92dd9a7a41748c3a370e7e6aa594bc43fd8736aed6aea66e3b0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEKC42300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502d218b6deac55de41f2946a3e7c878e7dd3d39cbe702ff4b4642f3fc00e7e9. 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/DEKC42300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfeb1ad9cf866ae8af88f3899a0c5d5f38b6235b4a289c9326ccd1ec8a0a159. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEKC42300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2f636e07e1de270111ec42976e4f66485d51de119f75201975ecad18dcb0d6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLRD52119672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d21f00a248a3e4c4b91f7aeb7414ec8f53f15d811de77e5e5b2aa09b9b001cd. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/DEKC42200087.
The Light (Alter Nature & Schameleon Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa2ddfb775f00eb415c0d34b922a6ca984306a1b1b66edbf0c1dd0f41b131ac7. 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/DEKC42200075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9082031075df7ff83508067662fa5dd4004e9e256c780e98fea7d7eba57090d0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEKC42200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ad5f47c44fc01f27b7b2ac50b47cfcbed9a1fe6205b64a08a18aa8d49cb526. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DEKC42200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45556f3013b56578dea23dea0019c302834e79b8f260f4809bd631a86e52a43. 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/DEKC42200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5234e600980f93428afb9e95108047e039a1735156bd8f7858bf74393a6e42c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEKC42100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449d500a2fb3f07a243b035934947e94c7147b3d007b661321e60dd3611ddc6f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEKC42100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84de6fe44eab15cf5cbc7325fd5ce8ebe99e7ede9238b1346f00aec1b6e06823. 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/DEKC42100064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ba479db03b6fad15c8fd7e04a60ec52457b63c6016481c34c069b7e7d44535. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEKC42100035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff13455ab3509a58e8e015be989baec2108ca6977fc0ffcda8cf7c62799eec8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEKC42100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f4c9ea308ee63237ba41f5fc62d8eec70b8b5ad25f0924cb5d443aa2c6f422. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:30:41Z), 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/DEKC42000100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ca9d87c5e5a878e7a4a1e28c5138535a6f4fda54990018e78104307d4f1081. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEKC42000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb39631d15450ede3fae62cdfcf249b454078c4144255382205bfa9ad187372. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:41:43Z), 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/DEKC42000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37838353132c612ba8d44f46d5f213038b74124329af9f28d11658740e74a47f. 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/DEKC42400063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e8f9f3dbaabd794f5aa05f3e53723539f1eaee4189f3c7011ed5528fa1232e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEKC42400055.