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 0x1f15f3124c382d1848d35fdf64b6ce91e4e43394ef8b3fa5fedf7c411e667c1e. 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/878572a6-e3de-4067-80c5-73c74bf235e1.json and https://artists.proofprofile.net/proofs/artist/878572a6-e3de-4067-80c5-73c74bf235e1.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 0xab6358f0b175e1c5f7610df85c8437dd70cdfbb0e8caa0086fd4052b8c7b30f8. 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/QZDA42294988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaccffaba285096b6d264a79844613a4a7628f9f1f831a18cc8672381c608329. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA42294990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c443fdd6ef2cd02337c802e34f0bbe3cc855a38b2bdbc048d8dbe4a35fea78d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTAU2163697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af3a578dd9dc228028aedc918b2fd37cdcd35973ab74d9a438c9641a866c5b4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6J2105615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a31cbaa4253cbfb300765444d75931bcd33675446b1038660cf8a9e38bc38dc. 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/QZDA42294992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f3f8bdd9bc25f5c4780ffab3b857f91d1e7adc7ce64813e9112c5d0c2239fd. 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/QZDA42294994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1ce4df755829d2b894e39fae4e848378891bbee0ed0be06678b87297fd0a0b. 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/QZDA42294995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6941b99877ddd3c0074575c04462f917d4631e461b20a45c047a34986dc51b8. 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/QZTB32245890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779c4b35d9fe04e37ab0f899f9871c5f9d829d9ac37363656ced5e55ddc6d623. 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/QZTB32245891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84db9e37220e8ebb38b48b61869412335f18cc4c5c8d4a3c64355c4d3f29961. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTB32245893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1b2cc167c10fc7d3ced836fb0b379ba230918d206247da445393490d60fc23. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTB32245896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6eb5647263c717bf04ca4cf1399a65f044effe8b638f554fdd8c6860bf522c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTB32245898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9a4cf7bd1e269b693b1f6442ed936dd560340267aeb2984015c6cca3252ef8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTB32245902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebeaaca9a8627cb5188496f3f9f86e38a8cfc40f8b04d12575f3c8bc1b9e689. 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/QZNWW2217472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039fa15b379662ef28feb5f35d62460b732ef2694d8c1974d3a7643ff5267bee. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTB32245905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b67a664a04b7b156f5350d58a8798dcce34a1003e1769874d059df686880b1a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZTB32245906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea9a8c415bd8444d0786387e7150d19ffb8dd33f91d93af12539d92529719b8. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZMEQ2312595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d5944de84589356342361d2e7200ea793a61de8ccd3e2e9e94dcba76d20978. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:44Z), 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/QZMEQ2474686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff2bc5549c0c68bd6b85506b1c953ff65477ea7c2ccc0ff63ab86d37e1b23b9. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZES92551333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8997ceb1ceac9003e7e55403fc971ab7bcc4376875a86e0bac00f91bc2a065. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/US38Y2541766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3532f7f90cc36039694e6ba225a1061971f6f71b19bb9ceba8c15f707ee14ba. 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/US38Y2541785.