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 0x93ad1fee037cbd459b634cd3c28ccb48fefb5c6afc5a296d2856c66d9f1773b9. 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/4ffc0278-f74d-4d43-a814-a4baea46ff20.json and https://artists.proofprofile.net/proofs/artist/4ffc0278-f74d-4d43-a814-a4baea46ff20.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 0x56c4b0b8e712228590ed11230eaa2ab5f0b836db08e21b967ab9cc622e6e63ea. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAIO2441279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03c479bcab3ec5b44b0945d29b2c5b9208a0c45a42b8cef006c7490f6ea9621. 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/TCAIP2442387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e50f1d9c79245b52b4213c9d676b60fc7ba62d32682d607c96da13bb8eda042. 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/TCAIP2449377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ec08682ce69fdd7730f7e8786f155370a192b0df2d7ba414bc6acd70fb1206. 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/TCAIO2448535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f6664143092a78ff72ea0ed71b49a2ffca06c33897d6b1c2bc3cb9204f5db8. 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/TCAIP2406077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc01dd0b331d77a519cd78968caf9bd6c8e71331b7cb8d0376d8d8b4f09177e. 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/TCAIQ2409701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0afe4651c63b82bf1056d0b00aa303426a3bb003936a8f8f139cc5bee902d8. 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/TCAIQ2417478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4520aaf79843e7dd1c2b2806d95c7cb3b50520114d9c4f62c238684945b769. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAIQ2415091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6eb08c34c323ec9a32d8415aad163a325e9567ca834b8d010f25e8e14b39ff4. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAIQ2435688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7950b1a58f0457146b6ea0aef3902201fc2d5afb803f350c2f7aa71f6d09b9e. 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/TCAIP2432099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaead73aaa902df035a32dba1bbe39f25cf04d197bd200dba7d2b963e50dcb08. 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/TCAIP2433022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f777a7e0d2287c22496ed50094e313d061cb6d1bbb3363e97207931f852a3b8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCAIP2443416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a600337428e595d6276deea9488e1402fb80332b5af9d676826a2c8098f4ea4. 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/TCAIP2458471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae58478f3cd6b540f34d02bd23faf9bce1994c8928a935c2a199aaf00bcb54e. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/TCAIP2456951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dba447fb7547bafbc3cf98a97f5f2449dd1b1ea775eb62203cefdbe942c07d5. 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/TCAIP2454696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf567ffa3143a52f8346935a67bde90e3308fd95308fa25deeb74f5fcc039e05. 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/TCAIP2468854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72250ecbcb8c8b066bda11d5b773d64ad715b1e810a133a8b0874e229ebffab2. 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/TCAIQ2465904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bee492079768043ff6b9cc89d0b508400f1cd836352200830cb916c48dcdad3. 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/TCAIQ2474960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc200b2c981d7a3fab52ff4600cd3a20d56bdb225eb86653b935d519506156ab8. 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/TCAIP2476890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71bf478a1bdf9bc555377d5e1556c5c098d9e4c85f1a74773e9ed22ea7df1fb. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:27:04Z), 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/TCAIR2416292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb22d7bf9acea17321140c20db8bddea180c5e3905c309a3fce5752e38bd5e97. 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/TCAIT2431554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27b45910a7feb25f4ea8b60506c26f482f25e31b72c9848f0cc7c258d38e1d2. 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/TCAIT2433239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9c4d1f6c2804e96cf878157e1b88880bdba09ff36f3d8d80545b0708acdacd. 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/TCAIT2452230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe480c434eaca38af2b643e97030d26eefec971a4d50e58e8b8658d39c9882a4c. 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/TCAIS2452470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5afb36f0fd780ceb1d146570249b06a440a0cd5e9c33f54689257e41e1e2329. 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/TCAIT2452019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9318e18dcc0c5acbfe11c3f65d9167b31747cc9711c09fbd7b9be213c127ab. 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/TCAIU2451587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554c2d706b72f5a1cd0e7fe4d5d202535bc9045b63b434a9196866112aa58802. 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/TCAIS2455765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ccb2ec2d3f4ec86a61f74d10200ba07f02815ee15b0f54fd28e0d28072b59e. 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/TCAIS2460012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9ab09dba623eadfbee6d71b8d33e33d6bf9933b6efd4d369de0967ba7f4fcd. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAIS2458354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab26421791027bde4e47b24c27b59109a8a31d4806a8c7b9feb2442970889063. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/TCAIT2459582.