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 0x85bcdfc84f3d9d7c2d1c008f38427e6b25b4a7fcccfa943cf202dada27d08b73. 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/28917926-a201-4e06-802e-6053c91f23c7.json and https://artists.proofprofile.net/proofs/artist/28917926-a201-4e06-802e-6053c91f23c7.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 0xcd76694c23c48e7121a40941352933a0d64d81a27adf648245f8ae14c2ff5a54. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/IDA832200779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404058580ef19af5f887ed0f969f75b9c735d941f1b9dcbeb45987843bca9ae8. 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/SGB502273627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7079647df415cbab0340764c78685c5c4d8b74a4340e625122ef549d38b1d45b. 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/SGB502276940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4b6383981d2df0374f125d168c0e7ffd701038c6fc04bc097693318e520860. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SGB502315485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55a2272e7cfca4fa558e0bff510819537d9d0ecb786da295c5d405b174653d8. 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/IDA832302276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf006dc1c32ca45ad03201555a5bd227a861a3eca823773f516df764bd8b7162f. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/GXBAV2304086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b78c79a06f5132d01e70caaba4ef63abf3bf69cbc02714d14ee92b33b1e47c. 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/IDA832400757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3788e46ed360fb29b41882566ea5b8ecc4c1523a3269ee06c559bae8b30f5d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:55:06Z), 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/IDA832400513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446ea5cf1886c6e7851358e007f9f6876ff253015e49e069a7d8fba157da82f2. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/GXD7V2359465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5471497f06c97381f2498e8cb644810e3904ba32656ac47494790d9e0d5f7ea3. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:43:03Z), 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/GXD7G2477499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ed18936cb3d877a960faf6c15080354469cb5186be7c575e9bd579b35db0b0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX872462312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c72a2348b057cc12417f03a61cd773f9730fde47ec3c2cf24b82d374b5b3b5f. 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/GXD7V2337327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b289fb2a4b3f653849b4ae0a6b75689a29f2ab1754f20f26a0f19d0ec4888a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:51:48Z), 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/GXD7V2217727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x196afbf0d86f3162f7ea1e8edf75dfb17e730a30814d897cc675102d2ac8618b. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/DGA0L2463474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a444fa020fc612b0a8ae87a329e70d6852ff9471258d5ac3ce3e9dc5a47f5a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/IDA832404691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d81d2f561c424b38987159ec6886d329c0b54b8cb20e9d009355f0868209cae. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/GXD7V2468788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ff03e5b6d12a2f2269c21b1d8453b35f101e20448a43eeec5bddbd3707984b. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/GXD7V2411140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e87209e637bb5e2154a68784bc1c486bed52a73d8886c2c05fd6a6240484cc8. 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/FRX282544964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ffa5666058e5c2f3a1ae4690f929b4fac6326749fef056c43f752c23baa06a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX452592808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b8d24a7d01b9826f4d3b3dcf9984efb6e79a9281de24aae98e09db6c5195c4. 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/FRX452590022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f098fdeb28e7bb53b43f1f9d3b70764fde8c0b8c2051c2373c57a2401234897. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/FRX452592785.