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 0x65be5d36b3da370ffe17a578b193906a651c0cb0dc194e34fcb35313a1dab48d. 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/2bcc0366-3871-418c-84c5-2a1e75d0099c.json and https://artists.proofprofile.net/proofs/artist/2bcc0366-3871-418c-84c5-2a1e75d0099c.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 0x42c548461eda61dae0b5259d709e25490b7a6ff027c2b3c1b3ac8f16b498b3d4. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZQAY2463377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5913f04d155f7bd6ed04949a9edaca34555ac3cf021f7deb62a6156b00c75b3. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZQAY2467193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df5ce03104aad2555362bcb4eef3a124404718fcab3aead4861344eb1108b35. 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/QZS7J2466992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdfdbaaabfdade72eb90361abb3c9c606aea8801eac5f2069150eea252b984b5. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/QZS7J2493667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28c7da1d47bdb695458cac4fc6ea14e3791b08496991b328893af9bb34668cd. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZS7J2474567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa88c4797222c2bc3109a4d37c41f6903b8b1ef2500d9b3c6b078a660b4c61f. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QM7282493928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097c15910639b36f47e92749f9c72a67d77d6cda687512ace8eb051dc998d6d4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM7282493913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fad731b76ee52963bf279258cd7ed43d40bc4126c786502947bd9fce422d94. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QM7282493917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a210e236b0517700fc5fabd19177c2ce8cb3bd0eb8298cb045b7edcac544da0. 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/QMBZ92424340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa255b0c03d12d0dd1771110f68433be0b7dae3c8c68f6cdf0d613660f820fff5. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:05:16Z), 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/QMBZ92424341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f2bd66b85097ba1f576365a411cf031109e43a740f0403d08ecf469bd7d411. 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/QMBZ92424342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc506be925571f4665ddcc9ed7d3b176984dbbcfa867e7bd495213d7b03f290. 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/QMBZ92424347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14e15ef04053ad40dd6b0c19ab78936ccb6f961b29e233df1fb86bf5882c8d8. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:57:28Z), 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/QZQAY2529958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b48ced193ceb6930983333495b25dc4b705efa4ac6582997b3b821cd511695b. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QZQAY2577648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5687a71f174aa99b1b7cb167cf94cf212f7d372b5181f2db872d52f5b0c22161. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZQAY2563375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba4b229b8b964fe36656453b620bb34843a9437198cd73f05b55d5664d0062b. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZQAY2574837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee9bb6662f342a69a15d96106eefe188d76656ca8713cbe48a03013aaa9df37. 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/QZTLA2530427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc87b9e4030e8b88e57add292c7159c2e46f4fe39df18bbba025b9e74e73cb68. 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/QZTLA2523838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4273e4c3c8ec5d3757d4194b6792a3aab7f4c75c48ee24212b6679121bd98479. 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/QZTLA2547682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0cd214d573955450764b57b9bb4f0187bdad716edfc1dcf348c48381f50257a. 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/QZS7J2578573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7cbe035688672bf3989fc44880d63560e441d3a28f12d0d1abb4ebbe19d33d. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZTLA2542776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d19ad51a05b56b48e78cae6a5ee8c51c2edfcd65a7f0777fd3f15dce5a2ba46. 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/QZQAY2541702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b4f09d6ff91fe952cebacaceb5330be8bfa9f9506882442cf141fdf4fd9a69. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZS7J2552967.