1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xec1446c632693dc85cb47e3c7de50c56259ed5b5db65b1688c95ba4e14706aa2. 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/818d347f-3010-4ce5-86aa-62b838ebae70.json and https://artists.proofprofile.net/proofs/artist/818d347f-3010-4ce5-86aa-62b838ebae70.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 → block OTSBitcoinBlock must exist at that height 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 0x4ba2a3cfc5c4ac230bc5d5576875f3b03c19e97822203799d6cd91ed60aa9425. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FR59R1948878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadbbecdfc7c8c64ca6e0bdbafef9e45fae5ac55b932ccc8f346aa3e0f9ae7b5. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/FR2X42093662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60160bed478fae1e0a431f8b1310fc1f1164ef0982db7757485376c5f915b98f. 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/DGA072168203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82a53cf41a8d390c457b479d62412fe0c0e7c4798654201c2fe70bcdf7a4f5a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CH7812227812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacf1de408c3aba5a81b206cb809913f4d7a190629e8f59a43665fd5466302e4. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CH7812344139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674f243599b3bee850f85f9766a9bff2d24da48d25bc024f0e986b9c77a5a752. 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/CH7812417953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12ea4a579235abd413c316591e156f942a49032c4c93b61bed1b33f0900880e. 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/CH7812424086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83265e6d04027fdab34141d921d4abb77521009f9e6ab371a8a684826cb20504. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:23:00Z), 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/CH7812425398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f2efa9062c1521fb3af882c14892ee86ca337b210ff805722121d672e17ebf. 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/CH7812349964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9621d4067e668b4111f31dfe69975ab7e0cd523a17953a6e116b655260371264. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEQ021903297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4002202607ea60125b132bc568fd11a12b497ac680a1ffd93ff1e8215dd577. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH7812226607.