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 0x3abfe5624d4ea885166bd9bfebd0d1f78b56ecdb609ba9bd3ff6e7c5cb455e92. 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/089d398f-0c4b-4e77-a859-e02b8972b79a.json and https://artists.proofprofile.net/proofs/artist/089d398f-0c4b-4e77-a859-e02b8972b79a.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 0xb9a7bf00859540184394fa46470d19ad82cbe3072a772c030a0ac26f1727408a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZFZ52077004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0866c53a5e6f3b4245e99efad0e886cc18f61f178ff3c611d3c5fc3df5c9e6db. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6N2056602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe8b73735374d099d4e18f26603b27065f85b0078278904a44e59b6bfc4be3b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNWY2021187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649a4bf2302adeacb4a757346e4141144fb5e76ca94a65231e243dfc4f10fd2c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:48:22Z), 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/QZES52172194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b08fd1c86894c26595e00393a2a34b7bbf05ec37342961a1f095ebccc14269. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHNA2115851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcded20b18b63380be8bf388e283b17d3641ca0358eb4982de81826fa91de3725. 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/QM4TW2302968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316830a973a35cbe7c63fa6ee4f4b9a58906e490a184c4d1357b82b9d90d46e8. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QM6N22377270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4e8019f556fc65830f6d0c03d1bd9c4e9d23f39ce6091d8159ac4f3f4f6f4f. 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/QMBZ92340067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fb35414432d9b7b35419cfd8b6f7a156b20b2d938a117d216caaba48645173. 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/QMFMG2367373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af8f9b2bb8d0236aef357f4464f72f2fdb85dd86bb34615ae84a0dfa294db6a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QM4TW2474013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f6abcc91424c333da28df608b600fc6b38f29dc494e3ccdcf09e4cd09cc9f2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX452402341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e08c86ae1eb47dcb36a89c0de43e7ea1950b7a2e527355b8fde8d9f2182c4e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/TRA162100533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90aa22fdd08c9b071a1e73913504bbf6344648a88fade3c70a4b8ee089aa84b. 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/FRX872171148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163fe52ba96db2e1f8d96365416373e5f2b8b88a9c0b909caed23995b755da48. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US7VG2520252.