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 0x2745a069e6f1bae597edd0e241e78ecc92e67141aee5cbdab043bc7a3c082fb2. 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/c7b6193f-199f-450e-9510-2b4cb7a42a36.json and https://artists.proofprofile.net/proofs/artist/c7b6193f-199f-450e-9510-2b4cb7a42a36.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 0xcb2edb391450af6c5ef205b69f7ce1c37887e488f68242b497563250740e52ec. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:21:19Z), 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/IL1041905003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4a9cdc7f2805fac7f1f4076a13840344a09461b614e83e2f677c2f91494e60. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/IL1041905006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82ef415d95bad924143b63343d5ed64f6d10963a38120f0e557889b3ff6603f. 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/IL1041905009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d814222727fccf9702c89a5749f15da87f5b5e386f24b9c257f7e50a56d6b0b. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/IL1041905012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37822a5b9ee771998774cdcc46cc498aad86ecc1cbd23c12c7e328fde7286cb. 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/IL1000002997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac70855649461869c50bc8c7a0067b4f1feb4edace671b09ac1e0b903721a77. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/IL1000003000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd816486b1dbb1723f7356707b98330f4c99d5b8d1e37c4a05296ff3b5919d9ec. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:07:42Z), 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/IL1000002998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51d96ca093a9b0021f8a707dc0ea9905a71a394af680b72ace47d4a20f35c1f7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IL1000003002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c9749ee4ca4a3c2cf55d1711913fa0027be904596bb9f4e5ef9da770313240. 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/IL1000002995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c962269a413ed006d1f48a1917fb9bd7c459adc0c5dba5d2c2afa7fdf7a1c00. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:58:11Z), 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/IL1001087694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788e2b05e75186a3e9d26c090744379ea69996b0c600e2eebb50a6ebbfcc1a14. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/IL1000003018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64051a5a9f305a9a169de55d194610bd4b40aea36a813f525d9332fcd768e7f3. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/IL1000003010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb543e32827e52dacb136dd5047e40b3f0b193f33f0b9e34447294f26725e18f5. 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/IL1000003008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7892d8cbc438640897565199e1c9fe5fa848edd406573b7fd011f01c0de667. 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/IL1000003013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdacf2683d5db291f058f55fbbd6041e950133a66ec7c024fd606fa8346e97c71. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/IL1000003009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e3d865beddc8b317a36c21d776bbfb6f1ee15501db99493b8f8edd78a9968c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IL1000003007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb3b5c28f3cdb188332de871a44f70c44d6584c67cfbf15906668c8387d3837. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/IL1001086345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f68547736542cbaff798b5ba407a7b712697f450de309de31ebce904ea52b2. 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/IL1042208201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77530f2a5d69067f3dd2444333ad48ae3b17c83a1af4665576ea34aac237799e. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/IL1042208202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbca9c4ead037fb90a24afdfe3cc501195c879ba114b307d77eb41b987db910. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/IL1042208203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf0ca3a05dc5a91bd0985812e454e8f6e006e05d030df56a3d38bcc4a9ebff6. 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/IL1042208205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cd1394d6dc1a08562fc7100ecebe7cdbb7434b757ebcf3dfaeade63f915193. 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/IL1042403644.