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 0x7b325b9d201fb2c85048cca22fec8da6a90ad6d5cb89bd902b6048b2d714cd59. 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/32773918-7145-49e2-87ff-c25a395aad29.json and https://artists.proofprofile.net/proofs/artist/32773918-7145-49e2-87ff-c25a395aad29.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 0x2369d15fd6f04d05fe73d32b90863ea8fc74ad378d05e4037822507556c7fcc2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZDA81977217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37369d46dfed3d21326cd33eef880e1eca9c1a18dca3c5e3e9e015ffb5428450. 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/TCAEP1908942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067120b370bbb135fa1da9737146962f09eac7a64b9edf812a17167c3491f477. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:19:35Z), 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/TCAFQ2127571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3ce06a18d08f27b5fbd00d235f83d88bf7098056ec41c9b41744db4215e06a. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZMER2169364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b9619f7b8e3de30f1493c91c07d137c34f55fe9f6b65b761d04c735798b455. 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/TCAFZ2252730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac832f5b29c3230d8dc799cb54a7180c042a1d8870c6576fc0f8c5dabacbf4ef. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAFZ2252754.
All She’ll Ever Be Is Not Me (Nightcore Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b63d57e3ef8c82c44ad23321dc4f92af71b485b9be03689409cde684b2aa4cc. 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/TCAFZ2252726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca35b3e28563a5d027aa89c8c7f75e6dbe82c9de5c98609373119d3570e23a8d. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZES82271183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b035557b984362448400684041b4c88bbfccc46b2c79e8b9238f1a22e2e3d90. 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/QZHN82297228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ed366d511ac3f50fc787fad0a1a6b90cac1b058bd13529097e77f0a055af13. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHN92294807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace976bfa640087b81ad9e8e4a9a4db4a93518194751778c72ff10001af37788. 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/QZHNB2201317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c142834e330c8398b89e5ae6a9dfa93803dd53bfda510f5b01921ac84d710e. 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/QZTB72272332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f52cae8b87b4e92890b1c9e05749626dd5c945fc2ef073287597b8595dd075. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFYY2340506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8657630b6c7b24b71649aa3b56ab1de40ab7d4518fd3e96da7311ea7f6287099. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWW2337620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e5640f63312cf9f20af7ac66a4c723350bf162db52a8bdc3ae66d5eee09ee7. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/UKZGC2401281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007b9bd98fba81a00d7ff8442abe82ace9e2eb99498f674d71c390f63e0a230b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZMEQ2400310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78e9979784a91812bc867d0c045e4cd2a99f1ca8cc47eb197975dcb1b4a5196. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWY2467910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886b078f0c55d1463f566e7feeb5d7d7bbbebdee8a67a87c67983c319bf8b8c9. 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/QZFZ22571284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319e460a109b8356a91f0ed9f3847d221e253b811781afb67a7c7d8f6dbe2bae. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWFT2580501.