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 0x94bdc15dd0dedf167b6fee38d9d34789ad72e0c33191c36ca66f40f10fba3a99. 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/a0819546-ca12-4350-a793-3adaa64f00cc.json and https://artists.proofprofile.net/proofs/artist/a0819546-ca12-4350-a793-3adaa64f00cc.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 0xb64ba862bdaf5779685880067baa9d36157d0b1a9eb19eb59bd0c35b0ce0df33. 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/QZTAZ2316949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4e2ed239b977bff53da97165bc868fc7a369aaf3e361dcaa86d44a4844e6d3. 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/GBLV62308902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6399b7476c0f8eb9478cb4e629716de1ce82def330333de98db4bf1187445d. 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/GBKQU2411616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9aa02d7ef2726054211276d5936ba406eef23939ff339d56d8cb0129ce5ab7. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:33:19Z), 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/GBKQU2436676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbdb5d1beb9ea1fdb8b09783debfc07ea8fdd46e0dc749c4710a8cb9127b50d. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:09:29Z), 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/USANG2441377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642c075e8beb84517c97c90299419f2378de271bd8465d0959febd06af8bd609. 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/QZWFJ2437803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e11b7812c753482224d561735e96d39e32f69ff24cf0061de68ff7ab838a57a. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:33:06Z), 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/QZES62544303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58106273781b8ebe39f7d14f6a34741cae219ebd6492d379cef807066d7cb48. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR2X42593931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927c1d7ce370c581b5007407106057b764c8008cf8c8159cffb400ac180b3150. 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/FR59R2529872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4651bc97a67115fc7def51e55d38bd76995317530c7dcf8a632540df4b742c. 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/FR96X2500193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19a4ba4e89a6185ebf3fb1ac53e776c72c6c059be2522b3de98ab4e4907676d. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZK6L2540485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381cbc3fb5d878d8c11666868519ce64c4ace2ffafb9cfcc1cb76c8b3b73d707. 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/QZTB32538812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0e381e5feff8a0910d1e70272b9f6d4560c2bf0b8450180b4f836c4de017097. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/FRX762564427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaed6deb723e8d05f450141e48bcad8e76444abc59e3451dae128929b0c867b6. 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/FRX762564428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6230699f9c43e97310f86666b8e2a9d240fc571084d0e76a107ce4946b07e4c3. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX762564429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e699d4cd02e6a2345e5979bb11c38419f8475ec68ba36ddb1371f70045c5c1. 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/FRX872513314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbdf861d0fdb91caa823c0db45e6f0de5cfb208f1b813d6586b0dc0894a34d4. 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/FRX872513316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efc32dd0a1ec6c4b0f3f532f8194757dfe8dfbc306eb0289df69fbd96a5f13a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UKZGC2507467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe2e0090b7dea6f59b9767309d3d00a4ff85e58efe0436633dab80a7c1295afe. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/DGA052576477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99550a54aa63beb4a225302a050ef315684a199705b72b582ae97cdd619462e1. 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/DGA052576478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1afd904873d90634624cce3f53551865430217505566982bfdc491cf398e34. 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/USANG2401627.