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 0x54333739cdf42d060a973a800da51c32b96156a6b7e532c5d6c6ccb390559c4f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff84eb9e-90e8-4bae-8b42-74e45501ea7b.json and https://artists.proofprofile.net/proofs/artist/ff84eb9e-90e8-4bae-8b42-74e45501ea7b.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 0x9798bb19ef02169ff5efbc71e903396b900241eb3266fbf8944286c2ef0bfa8a. 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/QM24S1838237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436ff8ac5948b2d4e2dacaf4d19311434b404d2001b58f72c199d5c4192ff00f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMEZE1949272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f27e8a9e0db94d88a020e596056d2169f7623ad77691dd5952c279b556a022. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAN112201246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458af33d829ba26e20a574f0dbd9177545e48e41825fb515be1a3d308290ea14. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/CAN112402294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc88e5299b2d4c2e36b8c5c4ac7e46703b6d92bc1e93d0c3f7cab793265f110. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CAN112402497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5623daf596117cd4455de3cef4e02a313e287e152f04521fd6f43e2ce6146e7. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/CAN112500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41134a42f3e99c81e291f441a18d3a09f946fea82acaad31bc71a2eb23433b2. 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/CAN112500228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb71539d553782021dffc00f1ddd618dfe404d1b74efeeb86378da019f81b2ae. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/CAN112402694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62374a5bc7f05e4b8813784e683bb912197d85633320b95744ab7ddbfcf240ea. 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/CAN112500368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5623daf596117cd4455de3cef4e02a313e287e152f04521fd6f43e2ce6146e7. 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/CAN112500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c168470b0781a2ac0d126cf7e16db523f5dc99c12d7e220cdc4bcc829f804f0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CAN112100968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a495c28d612745c3e6f9a44372d820e159630e93271998ecd7d682c5e4c72b9. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/CAN112401640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458af33d829ba26e20a574f0dbd9177545e48e41825fb515be1a3d308290ea14. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/CAN112402294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56138a52bf1131402a975f3248cff5325ccfbd578e287a99870f82e3c7090232. 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/CAN112100676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cc18e28fd8d010ea5bf72e1919168a21456e157ccd212f45647c5692848070. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/CAN112200548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d91eea589551be2c005bea3406cee75836405952ee1cda5129f7d47f9c66310. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USHM81873721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ec7253c2cf2a7f8e4a42efe8d50f19d7c9a3812829b4443e18ca05ce3d3d4b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKPL2021987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6f4cdbf0d6fa7e884fb368cd530332e22dcaeb2107ff6f09c4e135e586fe3e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKPL2015868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb020a78d27f8d57297817647aa8dba1774d239e3acba2cda72153b63acd1130c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBCFB2000591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9690bd5fc21a75f1a4a722092220109e4e4016bbf5970267c610c6980d0869c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBCFB2000060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb020a78d27f8d57297817647aa8dba1774d239e3acba2cda72153b63acd1130c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBCFB2000591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9ca2a617f5ed8f50903539dbf75b6c096067a71a68daa56243f3b62ea1ef22. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX282037195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb72bd7450f237607ac905f0b11a0af0498a00a2d794fb3212055ce862802bc6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZNWP2405004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb72bd7450f237607ac905f0b11a0af0498a00a2d794fb3212055ce862802bc6. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZNWP2405004.