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 0x36d5cbb387768f9b7888bb2c822d39bd7a997d9f9192b44b411e1814b0d65b47. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/645c0833-c746-47f8-828e-24abeaa66520.json and https://artists.proofprofile.net/proofs/artist/645c0833-c746-47f8-828e-24abeaa66520.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 0x56be9b82822592b44e3556f4c74ecd273f5909ea2a9b324dc5b78e0704c1dc06. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:31:31Z), 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/NLGM11902350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x951900bbd5f30ed3309a2316738bfe2b7d225ec80fe292c33ed9ce2083e30e55. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLGM11902353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb119d26c39d26af74501927d898611aefbac5ef0e87bccc8094bc91844b20539. 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/NLGM11902354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0933ee056ca4015865b4427cf765fdcb3adcb5fbfab8cac28eb0d1cd9bd876. 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/NLGM11902357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e3009ad891ae799d83cb21f5582ff2d028c12d121f55f6451f44e786628c7f. 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/NLGM11902306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17759bc71d256546e993e319b0a3bd02ad8d83bcefed5b988c97227722709696. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/NLGM11902311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec0dcfb0a5b65e95cc760b9dcdad67dd769dcb9de907408af7d2e2a975f413c. 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/NLGM11902312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5070142d69324c3611cb129b07bc13c5b0d5a0b9454be95366de5706e3f9d37. 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/NLGM11902315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99d7ecfac77d998a20618807db1b1742994fe89dc43b02f46effe737a2d97238. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/NLGM11902317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7570a658935443b11831037137f1521e767bb90e80756b8035d0565ff53c709c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NLGM11902316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0400490fdb9b51c201f3a464555d8e6400f14067bf3769815ec34d907fc33584. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/NLGM11902318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fcff3611450310f25052102d78302efe0613d61ad40c993470ba468210763ed. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:08:53Z), 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/NLGM11902320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa64b7c466a4705965d97a74b0df55ee45f4162cb6201e9878178c75e691e09d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/NLGM11902342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ca0539e23b1aa15cc42f779c0a249e9345845e9243eaf8fc00acac5f109a33. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/NLGM11902345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140efbf0ee01791d047bfed3e30a2d94788c32821b00c0db361a0115bf1eb647. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/NLGM11902343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc3b70ac95829f78822ac138553d23355dc37dcb629abe62b74dc2afd3cfe0a. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/NLGM11902344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ecd70486ffe295f7c262bcd17e998b7f76a60e8215e0d03d26952210aedc5f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NLGM11902346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bed306e2a5f366e78ff02d2aeb14cbc6f57a55473c8f8c4f67a238974741d3. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/NLGM12419836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54f52698502aa8befcda1a95a2f18fb2ebcd20f8db6a52f0dec89880ea18ab6. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/NLGM12419840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6042124800f157442a0608f7ccc19af5f4333dd41cc7e75121fffb2ac1a287. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/NLGM12419855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680e9523d310fbb066e0f8c7eac933f4dc30774fb024cbbe061823bdeca2fd8f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:39:50Z), 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/NLGM12419856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdc89ac3d44e18f32fdbd0bb479e0c1f1ed73a9158e509676c33a56e9f96112. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/NLGM12419857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e05d7c22c101471015974b707272a06211b482693e974b1219acdc8d0e22043. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/NLGM12419858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6491bfb822e135e2e43df5adf908d27eec5be37c412d84ee43bfbe26da6fb247. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/NLGM12419859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef016809633620f2e004a404ed17f7c6384f09c3cb68f99ab44ef7be1a619c2. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:09:46Z), 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/NLGM12419860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cb69d710c32b782169ae6eae19636076348d3b284e16701ce6a3991d5a01bc. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/NL6VE2512221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ce0d85c74a4b62db95459758acbcefab4fa50cc3907bc73e622df6ee2d1e0d. 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/NL6VE2512222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79f66f941d0c2657130ab51374eda5e50a303092da4aa2dd5b23c6e304b78cd. 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/NL6VE2512223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05952eb98e7841eae5b548782358e4145730e892c27e111a862fc174e6f8021. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NL6VE2512225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476baef2f12c84596796e9bdbe2dea0531b966485c73600920a3c922167f8938. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/NL6VE2512228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c13e3fb7d7900c22795ea65775ea1aa55cca5b878f2aabb5a822bd1ca37b75. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:59:49Z), 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/NL6VE2512229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e24ea65668d14cbc4184956abb06ebed509227df95664c2f14518a6a498fee. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:11:21Z), 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/NL6VE2512230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651d2785ba1c37776d5802333dc5f104232fb0586ff910f9ffae705cbb51964f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NL6VE2512232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee04b9d909c8ba0eb5a60f66b08a8ec7c005ce63750e4d8255561fd39ddad672. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NL6VE2512234.