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 0xb950950857ee7d26bbab8f87d9695e93e625c1d12c653c82e133c2ddfe21c8ac. 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/67676b6e-0f16-46aa-b277-75b9f27f3bc1.json and https://artists.proofprofile.net/proofs/artist/67676b6e-0f16-46aa-b277-75b9f27f3bc1.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 0x44ce9d19b999f9463ba936953209b01242103a315a874f1fa5b43ff3c915021c. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USCGH1788729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc807efa6b916fec67a4643a07c12a5c35536d8e42c697fe9c8f4fe3760cd1b. 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/USCGH1788730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16aae0dc7de28fcdfdd9a092729334d7bb733e63665e910e24a3eafa31e05c56. 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/USCGH1788733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf623b441781aa10a93b739a8fea70db4523c6eaa046660c05f03b18ac89b568. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USCGH1788735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41d2d55b77616d341da0c7e5ab7ba0787c8bd31bacadb00f4c610ccdb62bcb9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM91674135.
Rina Rina - Karmin Shiff & Way2Play Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f03a79b5c6e7d9e2b53dd667a970ec2b6f8095d95bf9024e376170835c89b5a. 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/ITC151300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b0723b5d1806221cd771e3a50765b724daa468ceb4bb46aef82d94d19f1868. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/USCGJ1794110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa399a050b0509427b296cb7848052c3c4dbf0bea46103150e0459b48f5badc40. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/USCGJ1812866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d82d7602c1cc3918f66d3e18301e3fab235e5978708b61a5b127561713f259. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/USHM21916143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d8aa73ce9b69b932a8522e77d07050b4dad338de1cc0c0719d137f1cb52cb1. 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/USHM22047403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c18023151b0c748ee8b2f62f5f93c4f141d9ed4a9864524c605ec23a91831fb. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USL4Q2051507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e30807e4e8ad95dad2b9baa0a18b37032ebc5f0a7ca3c9909ee37e581a4f45e. 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/USL4R2033968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6619a06b165fa28510fd4bc55ada4421e4da3d71d6573f92d715322aeabd2931. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:32:41Z), 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/USCGH2284726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d61f84df896b313f39955d3bb87d780fa9b794b59c17b76cfb7e19c5c4144d. 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/USHM22379341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365060874c296cb6aaa05f59d3884277010ea8791264284d5272780891a0ef69. 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/USL4Q2513745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c16ba8432fe54af0f64daaaa251be9becaf3bad186fe21b514a7bb796f495d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:54:46Z), 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/USL4Q2522112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0cc3a8e458b964956d3bf1550733fe4555a8b15f0e8b91f63a9ed4f880d270. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/USL4Q2559943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26476451b93d91ba7143f91a53472038bc263c40173c8a33779d8e882bce0cc. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/USL4Q2559945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab1f55ffb2362b115a25c27ab62e7ac8d99d23a5eb0b3d9942c24a97d377392f. 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/FR6V80121765.