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 0xc5e4c29e5795aa8564e7a9342314228a2971f64b0099b45107a824363dbae0a7. 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/3aebdecf-e5aa-453a-8a91-e01381dae445.json and https://artists.proofprofile.net/proofs/artist/3aebdecf-e5aa-453a-8a91-e01381dae445.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 0xf1a6b6eab3c733b6ddfaca044a5c7d1433be90b442804abdccc594528accaa88. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZHNC2356908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fc67a32a36cd3cea313f928b5d567b10ec3eb8ceec0caf3580a4a368317e7b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHNC2356910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1be579e8b63f2ffe901c05935b57e42910f8a733696d11df9199a860b454d7. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZWFN2311959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8d643622980d5ab31309d045f6aed51989f2d2c70198d9ec4d3568bd2e4adc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWFN2311961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cae16ddf40c8cadddaa151d2b6bcb002cd607c2d871a18c12271e2eda9df20. 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/QZFYX2426837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526c00ece6738067d65467da28899e97e1eabb1ce9358e0b5ab35d5d725895a0. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:43:27Z), 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/QZHN82489033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9d1dfb494be276586b38c2621c1c3c9f483eb2ac5999d2d2155e3ff016bb9a. 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/QZHN82489034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe4ac118718af06c1156bd8eaf39fc73bb35cdde0e980997dc267877d6c450f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZHN82489035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6da3e61f177c9f96da5546316a9a7bab3e02ef6f3c83114bd7236fdddfc33189. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/QZHNB2402788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e4bb1877d593f5d185569e4911a2f877bad8745557de0e3096c369b41ae459. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USLD91765802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56d9f5dede54435b798f591f7d45a2e2c0c1631316595bcebb1f1f15a500dc0. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USLD91765803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9925e5441a6a171f7a3a7626e87d9acff72db3fc7434c89c58c25796455b5a1d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USLD91765804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3a1e7f9b7564e22bbb7d7bab52101aa5110fc1d4f1db75e709edbe93cf60ed. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USLD91765806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949a400b4913432e23ab9c60bfce6968ac3ef69582104f6645cdc8de0aff348b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USLD91765809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2ceafd39d18b3b66f64d260ac17a8bb027be95c121b9bf222854da97040a83. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:30:47Z), 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/USLD91765810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40be1357e2ae6dee8bc7df11fced2cf5a8ad009a02c27a39027daebfee106d3c. 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/USLD91765811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fa5832222e1f3447b8a3c35d1a8741b923622e8d6a0d3d2e6fffd5ae1cf054. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USLD91765812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f21fe3a6a72b1c641205e8e98d04e0d9c09ed4fa50ee9d80b9ee59da0c1633. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:26:39Z), 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/USLD91775041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5d242930f1521c38508e50c2227d0ea957463c753e347ffcb24eb4bcb92921. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/USLD91775481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce73b96d9b2a97c0c431f70af225b15784007e9d2bbc2debad20ca18ea0f90fa. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USLD91775482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f5915ea94d29561ab5bd14446e0fcd283c16288f39c5b2a2a6e1e1a1f639c9. 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/USLD91775483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4265d6788c73144a6296f8b068f5127c3379ffbd71f428e03a655580a199f547. 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/USLD91775484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5d1572dc814eb4a72ef1f90f7da7d1e2bb8263a3f6327e3f5cced8cea2dd97. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:22:19Z), 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/USLD91775485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a06907bbf86603be1af343b6e0acb6d058239197a4315f56e669483264b09e. 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/USLD91775486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b572e2a9a96370c610c868cd75bd9ce55e310bb5de3908570b6bc023f9e442c. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/USLD91775487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae7063f983a81b42b9e9101b0a9d20ab4b35d04dd5ec372fed90c5a43503b06. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USLD91775488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebabe3009b75febfd02d8a9106aa63807edbeac5cd4e5ac88141b86b777b86a0. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USLD91775489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d8448cf91b6e7315cf9d440b74daaa6e0002c77ac3b055be038e2a861c1669. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USLD91775490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314c5c7293eb330691e8228d631e351ffeaed8a60ee7de0ceef7f96407b57815. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USLD91775491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3008ec0d6703504933ad20b8f0780aac149ed2574bde3764e79467606e580224. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/USLD91775492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af37fed4c38d2272e4558997bbb0d50d9b4173c6435f53cb07f9fd1bbbba29d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USLD91775494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026c2b2f15cd02ea9717916e3fbb6a607452b59b87080f40df7535cf68898a55. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USLD91782268.