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 0x39c3aaee8cad1ef00df382bee3f2a05c0db9b46ce6c79dd9a50d11f614821e07. 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/8096ae84-8e32-4f55-8b1b-a9f054e3779a.json and https://artists.proofprofile.net/proofs/artist/8096ae84-8e32-4f55-8b1b-a9f054e3779a.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 0xa2036912b0f95b8af7431d2cb2c58a72b9d4dd11e53586b0b52b1c8ff54c414b. 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/AUMEV2148612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472d923f5adb45b23573bdc1046aa293adbc428167a4233545f71a831ace6885. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AUMEV2148610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b2eced25cbd9a24c3031c40fe3aff4816f98516f93127c2a4c94d8bde7df2c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AUMEV2148613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac87d253d37340e50d8d3d3dcaac301dac15857ad86730bb851256a24e2cee5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/AUMEV2148614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c4db7be633d88181bf52852c9aa43dd0c6f6ee6145b420e4cbeadaee59f5ab. 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/AUMEV2148616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf975ee38b8c9d87c6fd69092bf94ecfc633c3426cfa049fe58d6b4ddd13361. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/AUMEV2148620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c53a47875b0c7e6906fa6c365f29fec47e2815e6f790c0e459e8a2520a16bd. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/AUMEV2148621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472d923f5adb45b23573bdc1046aa293adbc428167a4233545f71a831ace6885. 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/AUMEV2148610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b2eced25cbd9a24c3031c40fe3aff4816f98516f93127c2a4c94d8bde7df2c. 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/AUMEV2148613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac87d253d37340e50d8d3d3dcaac301dac15857ad86730bb851256a24e2cee5. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:01:57Z), 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/AUMEV2148614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c4db7be633d88181bf52852c9aa43dd0c6f6ee6145b420e4cbeadaee59f5ab. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AUMEV2148616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf975ee38b8c9d87c6fd69092bf94ecfc633c3426cfa049fe58d6b4ddd13361. 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/AUMEV2148620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a13627068beba2c2046cbe66702e64a585a194fa86bb98d62804b1e79d4ac0. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/AUMEV2148622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e05823c2f7d5137690f902ef36f35c06b1ede1975b5d26db7a9582aeb53fbf7. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/AUMEV2148628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23495cb346e55d058a428e8a81b5168808b0b807a000ed6eb87f6c12dc76f025. 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/AUMEV2148629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe617b0847d32615a589b50f4f2052b36b9e2761332e4264a0fe758affc78097b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/AUMEV2148630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e74692bf98256e7f7210d9aca00b25ea08a54ec342358e539c4ee15c61436f. 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/AUMEV2148631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144a0c09e9757902e6ac1a7f9003ef46e7c83d30c5648a9eaaa05291301f6e38. 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/AUMEV2148632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe02a057676effc0ae9aa0416b61bcc1a72f60a18c2be6bd0f59cc5c4a243270d. 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/AUMEV2148625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd8f5d1ae660302c34d290664ec8606b233bcf39ec26fa04c9f1aabb14fc4dc. 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/AUMEV2148626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc337471f1a5747d14c33ad3cbeb010fc254ed8df3518c65fa90e53e7f8d73d77. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/AUMEV2148627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e05823c2f7d5137690f902ef36f35c06b1ede1975b5d26db7a9582aeb53fbf7. 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/AUMEV2148628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23495cb346e55d058a428e8a81b5168808b0b807a000ed6eb87f6c12dc76f025. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/AUMEV2148629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe617b0847d32615a589b50f4f2052b36b9e2761332e4264a0fe758affc78097b. 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/AUMEV2148630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2321dbdca5ccb2a07a8fe189993fbbecd0c2b1460a13e2306c3bf8a2c18ee492. 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/ECA0U2500314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e1e31a7ed2243a45fb9428d79c29f2206067d4e39e63f7a15de1bb31b382f7. 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/ECA0U2500315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bb6c45542a9f8d812da99e052b257df553e3fb4e03415351cce1004d4933cd. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:40:22Z), 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/ECA0U2500317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5884d51da69651520858e2b132da2b1c176ccf1d8f59bcff4613a6b7413fb3f2. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ECA0U2500318.