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 0xb218f7bc5113233cf5b6fe787d669c3f0a656b64b0553f761542fc9de90a045a. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b3c1187-083b-42b1-833c-1accae2225a9.json and https://artists.proofprofile.net/proofs/artist/7b3c1187-083b-42b1-833c-1accae2225a9.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 0xf10d79404eaefff2317938156e62807a38c9540f1ffb24d24b5a3e66a39cb552. 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/FRX762008146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d13244a4aafed0a52e5d28c488b7b18ff7cb7ff9fcce10e219ad908fefe137. 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/TWX351900349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399e20ee9007edddf1440a05c62d73ee2181db447b9c857b561dcca962c5cdac. 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/TWX351900350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e97ad5ee686a143f7b260435ecb50d2274db04e253155bf8b56111f7934b186. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-16T13:53:30Z), 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/TWX351900353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad70c8b521c7eb8d0b5d945ca61fae0155c647bd674e080dd3df0b0408fbe28. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/TWX351900354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d137508c07e401bd3de658ffd1c233a7470159156dcb49cfbedc9f3573a2e38. 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/TWC230275101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aecf2425149ea16d59bb542bb0a5bf6cf207786d2eb7d5a55ca0cdb2c488cb5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TWC230275102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7929661131ecdce7eb505a72525ce68d96e69c9683e131494744188e0fcc131. 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/TWC230275103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabddeb71b15e818de89bcd4fda241e903b875c7e6b77b0751d69f6e96cb42f73. 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/TWC230275104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d6f4255779883cd2aa70b2d385d47440eb4afeefe1e66df2f140f415229b53. 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/TWC230275106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf970a0a36f147a47796c6ef0ce28ae2a729011338417f0bcfdb2e780090fd80a. 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/TWC230275108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b73b1bf5125b3f93cae53bb91fd2ff7c449e067172418ebfa8bed9eef06326. 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/TWID12200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d13244a4aafed0a52e5d28c488b7b18ff7cb7ff9fcce10e219ad908fefe137. Chain 2 (Bitcoin): anchored in block 957025 (2026-07-07T10:59:31Z), 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/TWX351900349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974b80d5c6b7b32ea0fd5e11fdbd3db6a9ff12b1ead8bb14baaeb9f4029b42b8. 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/TWB511383403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae7299fc830a792f0698aa77f1e7c06344ce9f96b68fbd2c49db87f472fd581. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWA471697002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74d334377b763da2c7a9a449ca60902717c98a2ea7d67f80b92c07f7bd04a014. 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/TWA471697003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffaaf54041e69304001bcea6db3ce5c346f338306c222073cbcdf933eee6b23. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TWA471697004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15574717efd4ea8005ffe0c2e13f9b3c450ab676b23b116441ea4e37486e2f3. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/TWA471697006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b30b780199f69324184acb823d224ed2bd1e3c9413b7ba60a30dc54c4c394d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWA471697007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ef7e486db30c9cd4842326a24448787803df273cd781fd11b250fe4844e445. 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/TWA471697008.
十五分鐘成名史－馬文才三部曲之二
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6c175799f126dbd8b983e34dc5e03232ecc2eb776559109134c5b364b1b86a. 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/TWA471697011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7544099efafe83cf51fc811acc2e2b42adc7cb7b811793b821a3794678cd8c. 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/TWA471697016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47131659cc657ae7f1b047170ea40dc88e35d22fcf81821b399409443c62ff8c. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/TWA471697017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e683144edd5201de46630b7e706e66da5d51a1c84c3d42b8fce966b198e29dc. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TWA471697018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebebcfc6e2b9ce3920faf0f41b08cbd976a438d53dfcfd06a6aeffdb2f3ba51. 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/TWB870109601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b89cde416bb85ffb802ecd21be0a8ac19471d2a9e75748e3f85e39b6abd5e7. 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/TWB870109602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b924cdea2226aeb0af6b2906c3c5bdac0d6c89bfb010a2ffe231b579713a0b. 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/TWB870109604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc127fea4bb5dc6168f789f645ffec121f941b9f830cfa4506bdb098e4d304088. 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/TWB870109607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f8a9c692f879b1be5b1bf9b63a85c07a427953485501794e4918febcdd24e3. 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/TWW131401202.