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 0xfe0b8c064776e805e28307a0f607d4c23ba6e7d4044518de2753a2edb11a9e64. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87fd4fef-f413-49e9-a694-c370b30ba839.json and https://artists.proofprofile.net/proofs/artist/87fd4fef-f413-49e9-a694-c370b30ba839.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 0xc73ee3f17727f8a9d094881609c369707692ca3546bda866b0cfa00ccbbf04c8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMBZ92317958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99531fb999097311d23650dc55a5c7328a3ef3c050cbcd0ba485d68a218bf3bd. 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/QM6P42377783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90c60d442b1a2a1ce02929032e2eb73c546c70ca6c42b4f961191d2965c8558. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BK4DA2406433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030a6f00a0d1bf0942af9951a76cc68cdbc3016dbb28931fa0d0f369e599d3f4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2326450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620911820847375bec4d107ecb1b46ad955ea7f0a792ffe22a4ca7eedd2daf43. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMDA62328224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba0b825bcc5767df763148cea6f27b280dc04d0df13f778dd072f40ba39a254. 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/QM4TW2472172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc7d0be08d44b81709f1243cec811bb8ce82cdd2692e5bfe4a9229e8c11cd25. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42434196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f4014df6d679684cbf6c151f268d52cb4ba4263b47247066423245e057d44f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6P42434197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265a9182e759e5c1d24dd865b4b22c6508c21fa8d670a75fa66258da95b2dcc8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6P42434200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8554e5a0df965b4c4a1ade77b4a4992ebbb3e8d4e821f405e9fccb9044f31ed. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6MZ2497527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ed682fd9631e27a2f647e19c77a9b3e0a3b36ac03beca9fbeb6c30521ed54d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6P42434202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d4ab0951ad606d47494163d5f319f851b187ff916b9294b0629251b3e74d51. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42434203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb22f18c2a20f3bef1ff345f966c0ec37025952921ebf3a03eeb649c838fab3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM6P42434204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08725dd7fe95a05ac775ba071be6b6271322248df92e3c1335374adefb38ec24. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42434205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b49545236737e1671f003762e980b78506e88c07e37b31c7b9c985543a9d50. 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/QM6P42434207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85358ff82bb33dd4aa288ba42e7f9768707c81b684eaceca7158a4dbe7adda6. 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/QM6N22418149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ac4fae5da76baa95cc9579c6858304b0cb464b5627510b29f3373d9479e6e9. 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/QM6P42434211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812ed45e71abb820d67d796095c3d9dd82b3289ab7c141f15f4d3e708cf8f97c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK4DA2429233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2543705581b611011ed160d0fc5b221c1c3107f76d202071e0b819522046714a. 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/QM6N22442449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85358ff82bb33dd4aa288ba42e7f9768707c81b684eaceca7158a4dbe7adda6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22418149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8554e5a0df965b4c4a1ade77b4a4992ebbb3e8d4e821f405e9fccb9044f31ed. 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/QM6MZ2497527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7d440c6634530e83548f4cebc9451170df7748180b24d07f302834b10adfe5. 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/QMFMF2328220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03d98106f379299bc63f2a17b04ffa2567af56b70685df46dfe0a525f7ef06c. 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/QMFME2388097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c0dbd5e9940bc5f16834b458778db89b420bd429f66ae59fd4c80beb68b933. 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/QMFME2388074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c162b17973e30eec926944200bfbcaa77d811001fbf9c655a32e63f65ee7393. 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/QM6P42379658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a29c1c15899a3ab5c487747180fc293493cff6d6220d088508ab48ef0397ee5. 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/QM6P42391046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f079328230ba9eeffa4c0be970747cf40ef66230e64a739241c9a973962450. 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/QM6P42364628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca824941de5f5841484e8177e26e8395e2aaaaa637b2eb48c2a0f7a199393707. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22339837.