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 0xac291e799c02493b663f9ad672021dd5c92799f2ab8086d5a2c51bb3972253ce. 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/1c25fb44-b60c-48af-bb31-80f23c1fb7a8.json and https://artists.proofprofile.net/proofs/artist/1c25fb44-b60c-48af-bb31-80f23c1fb7a8.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 0xd451f872f72158a4e1106d2771a8fd9a398e4c28a63648dc0cd476f13c77502d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:29:32Z), 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/AEA0Q2033252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5850bbb9dc34f03a59d12ede0bc2b83e767c9291d55faba1fda458cefc6a38c2. 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/AEA0D2054189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b2b948f6c0f6d5d4b22d982acf1e0e5d9693bace8d57cd12e1e74ecaf2d513f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/RUA1H2123498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41948cf66404068e862356e9132763eb56074df7766da3fba901df9d6696e10d. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:41:16Z), 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/RUA1H2143350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986c365d131802ac18e836c7f1affcbadfea5e646b8810ec79ffd5893f9a2964. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUA1H2167555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29eb87da5d7d1ec06d126c33ccb22a21e178d6a476f8351f98d09e9bb800373c. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/RUA1H2167556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b9e05662782a74c38d06008fc58203254f162ed175df3b422efae4746874fa. 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/RUA1H2167557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b6f59f030beea7e2a852072baea9f31957663b9d111d4e414dd208c10e99dd. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:27:44Z), 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/RUA1H2167559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69b313ccdefb2b8761c9c3d04156b8faded2dfdfbc85aa2caef75102e14061d. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:08:48Z), 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/RUA1H2190431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a611c0a0cc99c4eac5a2fb91de87e33f18490e20b29c2ce69f64f6f448612f0. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:35:29Z), 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/AEA0Q2103900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d842235258cce2e16c51fc4e4bc3e15d1ac3df1daee14d4b5371aabfeef6f9e. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/AEA0Q2120576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc3af0500a30a2ce1d8a76dd4a89db85e734bb8f39270f7666886d3760a37e8. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/AEA0Q2174621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26eb61e9b2b4d6506358183807a90cff83b0f2c09b1323637b40f4aeaeb9f15d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/AEA0D2140178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041647d631dd5c7ecb8cd1a221fc6d14c4ade34ec637941f6353d1af6c857db1. 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/AEA0D2196856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752caee0046975115b3e86e9109134d7b145505e1a571b907292fcbb5bf32cbd. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/AEA2M2113469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c27cd4075e7662319dc5f7e73822932663a5fe282080c61fca4370af083fcd. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/AEA0Q2212307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c2a012152268083402bc5838b589b2666aa2eacf427f87eeb22d33708e07a8. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/AEA2W2380036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa95afed3f09aef9dbee06f48e7f6d21bfcca3ab6d5abc5ecbf230e0adb4246cf. 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/AEA2M2323925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d73b44d1a9cb54a7847fbfce2a97be514ce50637d10dca7aad62a5734e6a09. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/AEA2M2370780.