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 0x45d96b33379ef416b1552a2c4f2e91ee7f2036c94fd5e746557db4eb65341248. 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/75febd7b-b8d9-4295-988f-43bcd31ce53a.json and https://artists.proofprofile.net/proofs/artist/75febd7b-b8d9-4295-988f-43bcd31ce53a.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 0xec939cd62cd7c3591d4db47f46a453ebe8d8a89742dc90c4ac40ba824c9760a3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/CH6541813742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24997702c370e0a9c3c41b0cf99c75343f021aca964a65a0ba8f39067a8e93dc. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CH6541813743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493a963bfbad0d4b801c4f3e4ac65c5d56763019aaeb01425facf25bcfcd80c2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CH6541813745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d2d53306a3e1debe8ba781a9b31b6703b45351137377ba347ba70c0729efa1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CH6542066358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9599a6ee39eba3c88b390c4477d1b3874a8005605f1c8c96aa1b427e6dae82aa. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:45:58Z), 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/CH6542066352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b131a41f9952702ead1e5425ef382dba4ec756318182214bf9b6fc431e9f322. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/CH6542202638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba77532b5601f320db190e94b162ae08bc6c95bd3bbe134d0a7a0c279c1b480. 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/CH6542202646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb454fdeec09fd3e5123144a42b980ee5dbff99f0b966bf75afbaf36c43aee227. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CH6542202647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f2305fcd5ffd6ca095f5d6eb1c22e16519bd005153ffe89aa6a95855688dfb. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:34:51Z), 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/CH6542202640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae5efd9122704e43f44d6c267806ff6bb8627be633bf3a982a35f01689de6eb. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:27:05Z), 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/CH6542202644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f61731a1981c962397f5e891465a7a8b5facbd55c1c37f1a61780bae66eacdb. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T03:03:36Z), 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/CH6542202645.
Live over Germany (Duckstop // Osterburg)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e36b419720fb945074937468f3686de3151498e2bc7faef14bbe04991e3d96f. 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/CH6542412579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc236dce760f3b2e9392c64c8a70cc1c34e66efb642779d67d15bc5bf2f2f32b5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CH6542412576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488eae554f2c8b3d3e9b051adf112b08baca15af64c666410026a9a880c9a9ca. 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/CH6542412586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00891e6db7fda3dd4cd15bd79add42245be752162fcd026bbbb4f9d5242a93f4. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/CH6542412572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e54626cc3a2be3f6ad411d89b035f4604fb2cc25d443facdc37e37acebb113. 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/CH6542412574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbd555a4bef909a3a08fb4898b6abf32af4f1c28a78378e8d64e9479d08c415. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CH6542412578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaaef371cfcc8dda1eb45e1a2e5b59ac963269628933a83c105d645d9aee4d14. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/CH6542412587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8ce4fd2ca3cb28872104229da998c80817c445d76617ccdca078fd9493fd48. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBSMU6107558.