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 0x43c87a492bc0f01c638b422b2e253fd9a37540fb8785d46222378fe6cda0ed95. 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/24f238aa-9e97-4b98-ad41-087564e46d44.json and https://artists.proofprofile.net/proofs/artist/24f238aa-9e97-4b98-ad41-087564e46d44.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 0x1dfc132f05427fdd621b594a580c173a5da2b0d661535bce627c01287327c9da. 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/FRX762244615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afc3dd0ea31cb4aafd2a61521bd83c27b758283c26b5892f98eebe990b68feb. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GB8KE2400379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe649fd5a1e2500b585c25f728d79bcfce5ce231b5b10112d504cb5ac8d8fb5ad. 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/GB8KE2424804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf26a39a57140e28738031e9df9f39833027cde420f12a86e4c5d7f236793ca. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/GB8KE2425969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77e22280b2411f0b2709745cdd0cbdd1fab7d3c8b43d3c81d253e3846edd5d5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GB8KE2425968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b148fc8bd890085f5c5a169ee8c1c8c7e9308b8fc13fb91faa9cfa5140447be. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/GB8KE2426742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8630ae4b76bc326380f54aa3b2a5f4b0ab0c90d4431040ed8cf57b0128ea6f7f. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GB8KE2426740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738a93b3cc3c066c3f93be41c467303f435e060998c52f9fcaa5c1c9cd46812e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/GB8KE2503503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90d1085f9cbcbbafdfa4d52f5e57d7bc97dd61211966f239826a4da433ba221. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GB8KE2503497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x603600a9e7a95ecd3f67cbb7e3b30bbcdbe65b5dbe850a5a70f59ea283475926. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GB8KE2503506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bcdf5a8c2549cd2ba589ba0bfda4ab35e79fc2acb1fe190bfd1550671707d15. 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/GB8KE2503507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb7699c8b5c51741004262c727baf9097db0d35236acccc346b460b2b1ba42b. 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/GB8KE2503498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cfae2bf77398bfbf4e2f0d54163449a97ffee91ca662429e4e74289e459d29. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GB8KE2512236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9c59dfaa3dece77578e5b99d44010065af39d23285fbd255eeda6b274b0094. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GB8KE2515367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12739274a8a3c4bc99eebc121da05af56d50a3589cb08c5c2e08f8394c4940d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GB8KE2516952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95194154c65cf5bf1e03268a6f09d80e11f9312bdf32df14d85f5624857bb47. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GB8KE2516953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce31112baed01ff06c9e6c52c3315fe256ce45aeb59a04772ec81e96345a9734. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:30:11Z), 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/GB8KE2516954.