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 0x1b1cec5e7aa01ec9ed459276b3ea8e7ebd49aa2d6a18585bd561f8a868ddea87. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b24807b6-63f8-455b-a440-74f3ae5bf801.json and https://artists.proofprofile.net/proofs/artist/b24807b6-63f8-455b-a440-74f3ae5bf801.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 0x857a41abebebe13c2475cf201b0900e15964a82fbee31ac3a5b1876c1acfd446. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:15:05Z), 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/QZFYY2508494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8c015b50cb0d7cce6c11eea83b1332d4ed988ad61d97c2baa13bc172f33943. 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/QZFYY2508495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4d338a250c1839868dd401955de4ba75df4c2911ad6398409401f065b28db2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:50:10Z), 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/QZFYY2508496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351de14433b620489b3e474fc0009dafde52aacdddf91caaa2fef5d371cfeaf3. 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/QZFYY2508497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1f15acc1ddb6572ce86e5f2920bbc4a358e35a4116b29842a782b0ddbfaf10. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFYY2508498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f46323418a5e95a9e8b275f8ca37e59639040cd4d36b47da073b80b1358d3d. 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/QZFYY2508499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0785f22ed0f80df41757f3d0ae110723aac921c8ca5e4de2791927f658d5d4c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZFYY2508500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55bb6f37a4d058e0b5e4cae6c62b12dfe981a36d553611580e294b8478b367a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFYY2508501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34f4dbd574d8e1cf8002079db37591052fab1717a5de6f8f0b9c1c2c4bc4f9d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFYY2508502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a21bd7e444870447f8dda76a48e2dcf38a8c3b1609c00281a63662e92a43f6. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZFYY2508503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c5b08bbe3d495133725708147dd3bdf0f8e6be044ac32e28aee656092ff360. 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/QZFYY2508504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2bdebb5c014f39fe3dea5cd7754fd91903e7abdf317ec286bd20e7b72f0ef5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZFYY2508505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2466d7dd2901bed7db789caccecacbf28d70fba8abcd208e7a54d2d8001a2046. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:41:42Z), 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/QZFYY2508506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec48061964eac5ac9bf11a53aedb91cc76010e6ee0312fd2d9521bd8d6937a7. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZFZ22571379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0dec28a27539998cc1b0ee23bcc616e255eabdd9b9bdbbdbd0af4f8ca84ddb. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ22571380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786465f8f86d1069df6df2798a60db7eb90dd4f276f9eebd7d5ae6dba06e7f13. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/QZFZ22571381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9401907d067a2ee27972cbf33b52817995c2bde0d0bf5f5f059748d8a2d07b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZFZ22571382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2872f01596b170eb924bb0ba9e4ff8951956a18e3995cd176f0e9717148fee46. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ22571383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f9ca0a1101a153d5aa96bd0d782f628132b4427724961473ea38dd8c66d27c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZFZ22571384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90dd5dce3a0bb0b324347b0ca3d1bb11886690f995654fbc6db3afc91934c1e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ22571385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d5a579cadc48f7848f9c068687759adc5df03a70859f86ac5835a5eb08dab5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:52:09Z), 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/QZFZ22571386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b8f9f5d95cf72b5fa19ed659d2057ca197d93a9c9673a4fcb92140a9907193. 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/QZFZ22571387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816fbbdb802c8afd3073e7609843bc90b0496fe704b03fd140d44704f66a4042. 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/QZFZ22571388.