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 0xb513f5adad628cca4b74828627b35894be3fbe843c16ffdbaac93d0aa009b0be. 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/09f09a40-608a-4543-b3a5-b5a65630ba24.json and https://artists.proofprofile.net/proofs/artist/09f09a40-608a-4543-b3a5-b5a65630ba24.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 0xf74e089a89197d3b305198efd7e09ea6ee808728a9892c7761d5e22e8a24e3a3. 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/USLD91756924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf74e089a89197d3b305198efd7e09ea6ee808728a9892c7761d5e22e8a24e3a3. 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/USLD91756924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e65f31e97896431799a53004792023332388fb89e725d09b6e4ae9e7ef0a07e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91757247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dd1cb57959d50d4c316c6fb91ed25383fffee81f67edaf8d143625bc2e90c5. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USLD91757248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94174f29860042225e592c32652e82a4aec44459c8cc59efe77c75d20e5e4b6d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USLD91757249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7242b980144b13567908e2e0809adf7e981910fe09c456eb5ec76bbe9446ea06. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91757250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be0019a3981a381340ca27699d3b5efd738b955cb3f7fd7984562467b25a585. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLD91757251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb672082cc71d3715bfce381f838326935608d1ab4f2bb1b24ad2cafc21c6fdbb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91757253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa90cff8a4d00e03fb81c04e71a314331ea48ca3599088e4e116924b1425e828. 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/USLD91757258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d69661626a037b5704d1888ae28e48ce07656d61e72bce7711156340a1f231. 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/USLD91760728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20016842ad3583c40fc367a95127fabf6c376072391dc406ac7828bd2bf4d2a3. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USLD91763631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c480ad3d6171d38578d3fa2cec778a1c5bb7ff0f3afc360103bca1c305d7353. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USLD91763632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1932bd8b3c56cfa047f2ada4ed459b028be9a4f033bd73fd5ae05e6681b82ab3. 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/USLD91763634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d3c28b33342a05873616fc2867f008a2c8b1daf8ac693953ea7f3619f147aa5. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/USLD91763635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d349730fbd761cd77dd085a6ee41525c70bd84e45320cbe5a31576e630fb8c. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:40:17Z), 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/USLD91761434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481dbb1e4ba3b10aaf03bfca994e62aa1d431c6b0380c0e5af27a0f101e1b79b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:20:47Z), 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/USLD91767537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c1851a34cf41e5f6e013bafa07de0b5b5cc24fbc539304a66566d39dbcf51c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USLD91769043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd642ea79fcd8ec866c8b01846aa3cfdf033531044c7b330375c2e2db2dc09e4. 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/USLD91769044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40f5c024a7fb1921398a13e9b46f3f2b2187d5f92b0da03fe3214ee55133fad. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/USLD91769045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1e3a8237ead42b64a471243be845f94dce0ac0b68eaf439c818ef7cb0e2bfb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USLD91769048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d398a12055cc15e6a94c7cd0d9e51816ba38d0b03c32507e7d5714b75a93ec. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USLD91769051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf94b3bb4c19dab98ff06126e0d402279dc745ed060169bf03e04a84547e8d9f. 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/USLD91769052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06a2b3591ea6b897a057111ff2dbdee455a5ed415a65adb90eb06a37ec2c694. 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/USLD91772302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d0fed921b3990f71bae1f0889a9bc6cf28b0ba5a64c1811c48c0b5aaa6d88f. 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/USLD91772301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc877d6dc2213eacaa1d984573779cfc16b93c43585a0d799e2186df2bf42da. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:48:53Z), 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/USLD91773782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee57c985777ee8e13cad1dde7b6c870ddbfba1ba76aa268c65a467ff5b11a347. 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/USLD91773784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06a2b3591ea6b897a057111ff2dbdee455a5ed415a65adb90eb06a37ec2c694. 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/USLD91772302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52e60eec753c67a0f8c756f4ea9dda5066182d684129c85a76b7ab5b6fb5ada. 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/USLD91773786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6da970c809fb0589a76b76d8f2d573e0d60e8a92abc9c9b60c4dba158f9cc58. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:00:45Z), 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/USLD91773787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79bd72e97afe581f6feaf71fccfe52046194c41f7f614c951a76e61a56cd9ac. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USLD91773788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bdcdfd1a163c189816f3bdd0ec3e61423840ca70e7e79942891d02ef0f222c2. 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/USLD91773789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1351f4dcce3856e4397db5f671230bbd27694946ec0d27ae8fae962df918381. 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/USLD91773790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb239ac2cc8c11549f32b7d81a47d682beb8a776ad4bc80e6b040eaf54e3ea975. 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/USLD91773791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d0fed921b3990f71bae1f0889a9bc6cf28b0ba5a64c1811c48c0b5aaa6d88f. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USLD91772301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc12f05f8934ec53511dc6594c7ab4cb612f7508c27a697f0d10ad5371239c3. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/USLD91773793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc6f0a57ede4550589fd8b7d756085438fc246bad345391c7e3d4387b43e992. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/USLD91778058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4ba393f4cfb60992adcc3ec01bd8224e35998d62720fc73a657c7bc1200006. 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/USLD91747291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcbcd7656234e0aa17d6bfbe0783514b3d2d4bf93fbaa59ab88c4f8927e97ca. 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/USLD91746497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56b69222f3d7258a857b421df3a44b188567f6a3b0aee10d6e0a3207b3c0402. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91763264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f26a8c5670c7c2ac87e726cf48091c689c41f8cdda028ee4703794304116a7. 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/USLD91763268.