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 0x1ff71cf493459fd47ae3bfc6f0f89a768060d329a09967ce1258e6257d34eb87. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97b13943-734d-4c7e-a265-41f360e2f412.json and https://artists.proofprofile.net/proofs/artist/97b13943-734d-4c7e-a265-41f360e2f412.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 0x40cbfc8f3fe8870eaf2161a96c79d39a22b15a60a236bea1318bace00bb8fb54. 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/USL4Q2271122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ff8d307281933d664da99cfeefb21a46f19c847f6525317aa93b6d9cbb19f0. 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/USL4Q2358666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460b2bd67e92e38cca578dfbe3d20bae303948c155e9f8d8787f7a5ffd272a95. 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/USX9P2348969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4926d15384a13ddc1ea9786d73942096bc7e9dbed38d32b0d2f4d95562b8f3cb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MXC851600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cbfc8f3fe8870eaf2161a96c79d39a22b15a60a236bea1318bace00bb8fb54. 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/USL4Q2271122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612024093cc87af9332aa54a007bee4666a460e4aa4cd012467abf3760134abd. 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/USUM72104786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2633c420f0ec92adbb0660400b23ed39445d3299b51e8a75b4d62dbb472eb035. 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/MXUM72008137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19245d9a2cfccbb008b738752e8d19195bb80ec6113b2abfffe58ef1bd87622. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MXUM72008111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931fa056fd44cdfc5645056d157cc776723197219406def6bb639d4b31515e0a. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/MXUM72008138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b4e38998df0c6ff0464afff7e4b6e69fba51c66b2d02fb96d9b6879fb492d9. 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/MXUM72008112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35193f3cc1cd177fdd410c8855c979a68e41fee36028dafe7ca29dad5344aa65. 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/US67R2003265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670ad95863be3599443105426460d9652005cda616f5db6b6d7e88cf4f031722. 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/MXUM72008115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fce76d483e4ef4f065bf07ee7cd1517044c80fadec005c42f68383763444e1e. 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/MXUM72008113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc773d6f4fb241c5809929e00a5ccb06aca6b64dc7c507c5ad0fc431f9a361d7d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QMDNX2010574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd86a82d369f81b8d5a0b6876267eaca12927441c0132af8c9bb38fe47032d0. 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/MXUM72008118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619c3552a453852c07f96bb0968cbb578073ac91a8d50d9c5442dae26e2d0c18. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/MXUM72008139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5553d62f14b9b50f7b5d4a6f82fd09827c9e6d3f46d0638105a3129827541494. 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/MXUM72008114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d7b3c01679574dd499355b9c5833134620e9e816cbea896b7b071f39f729e2b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/MXUM72008117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39daf65bc9f8afc6b86b068528f2cebb63ae2e65ad1c9e5142db5f416856daed. 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/ES5700000221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a5f9f440fba0eb326593c9e47444e34ff635edff889406a155fd247d11c741. 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/ESA012280351.