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 0x91749e61eb5f82846f3d164deaeef3878df66900b88391c2215c57d845d44951. 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/9622a334-d0ad-4b23-a771-b1a085a7c66b.json and https://artists.proofprofile.net/proofs/artist/9622a334-d0ad-4b23-a771-b1a085a7c66b.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 0x6b0ef369b9069482d4fa9fa6dd7badbed69e4d24422d67ccf248a425040266f6. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/AEA2L2226314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a71786d3986ec660f9be151ee668afdc4c171cb4cf99e4b636dcf8e047aa5a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:42:49Z), 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/AEA2L2226316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6c08321f03ac73eb39b0302cd51898515c364a7e1748ca4079a553c091a5dd. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZGWX2081658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a60549530ad6eba346cfdb8957d216842a5d74329bc4809dff82cfa7831fc58. 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/QZGWX2081659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c764bfced4ab4fa2e196718e0f1eb778ad00b3f6ad904596e94054a836ab055. 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/QZGWX2081660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a18983747c480da86238f9b34b5ffc18a81d144996a439a0ef545b077b66b28. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:11:20Z), 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/QZGWX2081661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf727f3877c88a0563a17173329eedd2f1cdc2b1b86c97116d624034c43d62267. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:25:11Z), 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/QZGWX2081662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ef8d80aed81a9db2b8a0fe405fc249275ad061d833f42b56154556b83f6ea0. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:01Z), 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/RUA1H2059250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7226124623fca8aae0aacff97428240e3c28e4d360357fe952517f12c2695138. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/RUA1H2059251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cabcea4ef4ec456b66c939780ebc79123ae9c6ce9811b3e3e6aca510661ec1. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/RUA1H2059254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa774df0ede35607e51597815f3896efc9ae5e50bf5ab23295b55f286f76f28. 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/RUA1H2059255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadd65423fcd5b1c7d1f67d2b0c5862ce4404767fba2acd0a0fb4b66c078df53. 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/RUA1H2059256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa87363a893f2572d36d3faa37f73f2794bf2938cf8bc69e3a1f72eba36df70. 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/RUA1H2059252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eef3e840b90fc09a83bc4bd090521c71f2bbddc3346ddb2bb667d67396a882f. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:24:39Z), 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/QZGWX2088993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb6b7e8a33d9a99bb4c0b35b3de8d546daf4f8242544a1da980f1df6940d964. 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/QZGWX2088995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90f1a898fcf7f0604708b709685af678a34d750fa6b9e9fb62412b9061dee66. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:58:23Z), 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/QZGWX2225589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b68115328d37aa3c567dc91eff9f06b5b710bccf9cd170345e129fb3de59525. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZGWX2225598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b174ad8c9626ffa1eb7ac4ad010ecf5e56156606e249435e13808debb4e0e0. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZGWX2225599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7627e2d2f8f5a2630a0d99dbd449b71b5e80f5bd8f1e83592b56f9e54e2e5eaf. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/AEA2L2226309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda69c5a0709dcc19ff739e3a1aa5ff4cdbc00445c0c2976dedb69cca21941fd. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/RUAGT2305547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb5c0b455a50598a086a9f29d842309535b7c77d26ca2f5d0e4e14cc89078e8. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/RUAGT2321370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e90254bb961c6a2e2a94c4fac0627ac648a340aa5d8ff712eb1bb897c6d4525. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:09:02Z), 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/RUAGT2321371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73dabdf9d975c26c6c83c633eeaa61182fe3e15af7e9d35d818eb59ff525230. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUAGT2321374.