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 0xb4044669a7dc1cbdcee4912daf15a68239f1a80fbe47e96e02fb28d30892858c. 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/9b6fca10-0930-40ea-8648-feb22ab16506.json and https://artists.proofprofile.net/proofs/artist/9b6fca10-0930-40ea-8648-feb22ab16506.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 0x67960223029e9cc0f6a89e7950191889d372678d3dd08153b75d5a36a44d6bef. 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/QZTBF2494759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcf873fde500299679dbfa437fc165cd7b26bbc357c63fa5808c8ce70b0d421. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T13:00:37Z), 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/QZWFE2452890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ee3e8684d9efcb3224de6d7b31ec59ed6a915bb29e35d246e257a52c686a83. 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/QZWFE2452888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9240f3d0a0135cf4b2c3de0bcfeb3753fc469098776fdb47d885ad06eb9e6c8d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZWFE2452256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b2a545531ee1a9a4b119c28cdb537cbefdfdf35e0661b819ed3670f4ea94a0. 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/QZWFE2452889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae53affa66040c837cffdbd8836abad6f572760f2a6ba7070bb9d29d1a441cf. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:43:41Z), 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/QZWFL2456700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9981d37d0362b449b584df5d7be554a76c51177db6c8f5bea83dc7f7f94cccea. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:01:41Z), 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/QZWFQ2452131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2441a33fc1fdba16defb3db32383b0a604a6f59f03f7ab36e9bb0e5cc74132. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZWFQ2452092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0a1fb7c963869a20bc2bb21f00bc2d002c26f236b80244c1650245ae17afca. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:46:48Z), 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/QZZ762422125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cabcc4214b98d6e397fed6c5a76e9d667ecf39ce91b1293a25a6688b8206d1. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:42:23Z), 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/QZZ762419859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b8ac9b128103deca450ecc6948b37b4bfd3d9286cc4a13221393d371aa63e4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZZ762450934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f8b8999607d595815ace250dd8eed90005676a6ffdef65b1628ce07afdc808. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:54:26Z), 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/QZZ762450933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffed2add1631303674006ddf250d5eb6c182b4465a1c58672889f743c6d407a3. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ762450337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a694bd941b4ee8208d2f261ea2abb6e480f0d9a7067e242bd62efb86bcdb16. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZZ762450932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a3e177a436f76f5304f0ad1d0d6cfefe5d92d2acdabffdc9df5cabc7442763. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZZ772451732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ad6a845d588704f4d58cd694e1942d93ffb00eec1c28064cb2684a6f74b7ce. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZZ782443586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9d71b199b448b3267156540453166d29b3da89bf933dc45a5f95cbd1a09ee6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZZ782443578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d8fbefee11eeba81c33e44c27e3006d563c53cfb3fa42f3d0dc80aa13d8d4c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:00:52Z), 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/QZZ782443583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15edebb077dabc6de89357094ead7cd037f6ddfdd28c9a8735b973f94617a36f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:52:25Z), 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/QZZ792420631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181486cbc8bb38097b3273a703469e4d9ae15cb46b42da19e7a4bd5740f038c0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ792421197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecd2b9285d2f16378d5349a92aea85d0f4a6865a5501fa4ccdf47732d60f11f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:56:10Z), 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/QZZ792421196.