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 0x3436f62388c27e2afac5d508cb7af48bcd4aa7b8df7a53f7917f9d3853caf0f3. 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/03221394-1312-4324-8899-c4aaabdd22f2.json and https://artists.proofprofile.net/proofs/artist/03221394-1312-4324-8899-c4aaabdd22f2.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 0x6f91603e7f0a0b211ee0688b03de78ae5d6ac694fe6199724eeb4697e3b831b4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX872142189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ec82292cc5f75bede62634ff0128899da70b7660db7a799991db8f63b11627. 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/FR10S2399296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd355f573cf5061b7c22525ec500882624d7f38fbcd8a17e839fdc0d891019f97. 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/FRX762167414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5050d06da1d269918e660345b4ed4632a094e8360940c1dcc301188bf4829c67. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DGA0L2498302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237e05c5d5ddc05f2b2227a0e0a3245ebbc869d814fe939e3f76d651cad82c99. 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/FR10S2401794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff923f2d3b79697bdf133bf2c7ac8743c913c1c461896c7d11b356fbe12d4ced. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA072383250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ccc2c748e50da2ba802404b9830aca277644b2f9aa00155414fefe736ecec25. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX762312254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ebbdb44ebb143ab362b9c3515c98bd774b98354169aad646f63c2f5d74d6ab. 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/FR2X42337288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77db646409e14c6dd20cf39253097f5e412845267f05a6172bf047682836526. 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/DGA072251196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3280c855eb232cb35e5e65dc0a383d96a29db0272e08412d9ee8ed8c4fcdf4cd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX762229034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29168810767b46a9d0f62a3c89f9b3b2a7e5993ebb38e14b943ae7cbe4509e59. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FRX282268408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c7561ca34087a3d50dfc9dbd5415ddbf82e3a767812147f6f7d577557a698c. 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/FRX282223459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff58f28540315bd4149de152753a845dc3a4483fa27faf1b31d544b58c290865. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX202258009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ad74fd0d12f595dc7faae460b6937109521dc093c4f0802c7bbe35542163fe. 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/FR59R2252927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f201e6a83e142ff00eec7fe467ab7d9a4359b32e384bf9b01e9568f6a1da674. 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/FR10S2293932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6704e642d5ca84e0dcedbc2c53589d2bcd410cd2646c3e90954d78c57598817. 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/FR10S2215482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de060de9d98ad4808487ce43eba00812e467ba6a29905a0ea8d24cbc9467059. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX762119167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4c7c1ffc757c7573a2e63e6e33c38a73a3d283b17da188ed04c0325724e31e. 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/FR96X2199798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21eecfa04d19a07579e0a07bcbcd2bae34f58a2cdb90323a983f8af62fa63593. 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/DGA072198949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049007a2237c0ceb5da78f748f7ea8f3baf3b0e6d388cb613c8f234f6b69c194. 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/DGA072114039.