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 0x265db939c2277d592f4887581935e7326908e40e35456900559413888659f04f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d1c8501d-c5df-447d-9e0e-a132ebbf13f1.json and https://artists.proofprofile.net/proofs/artist/d1c8501d-c5df-447d-9e0e-a132ebbf13f1.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 0x68484ff6607915e7f6fcd30881fe9f791a8a1a67d41ae3515fcc13dca1a31aac. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/RSA141308491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54328d9b9aac107f5ae34626e9dd19d640d3918cc83197dd3b9e942aa90e8d9. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:21:50Z), 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/RSA141308492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0eae389bab07171817c44640fbd98d52f7ef02fb215979aab87c19bdbc3d6cc. 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/RSA141308493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8bafd0f3e82a4f47fe831ae42ac92c0fb88a430903330003ce52648a51462c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/RSA141308494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e620dcc38fde88e7cf621669b2c0ca32364d4ba04c188eb4b04672c20be8b9. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/RSA141308496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c69db96f5c2271ea7f6d9e78ab5776d520448aa6db8b246b8a11f626d692c7b. 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/RSA141307034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d5dabcc0eb3b6da5c741ffa8d447bedf3bff6c00813c1fd64a3972f944bfc4. 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/RSA141307036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b37ece0ed4a75871fd60b181b7e420081c37202de73e2de298a88630b846beb. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:38:44Z), 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/RSA141307037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b80787c445b6fcfcbb8a3c00e5434574d057bf1aa8aeba4b65847a0b1985a8. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:07:44Z), 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/RSA141307038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924d2da64e5bf9e385bd2117f5d1f516123d56c432fffc6cfd3d4f27a9cb7979. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/RSA141307039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2682d7a6403fc417c270f4aea0673d9f7a3427880f70518a235da8773f95cea. 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/RSA141307040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625949b499dcc7cb8d7f675312f419fb7e8c92d55912794973d3713ed5b2f3d5. 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/RSA141307041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f7cc909ca9aa75c35e24c3f9c365c60cb69269184b660760f71e7c1dcc8fa1. 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/RSA141325005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca215736eb27c16332ff8b2ed328339bb3aac6b3edf9ab4f3827d6536afab019. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/RSA141325007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2d2dd17dc03ca453b1374aaa1d414932ef5ea45bec6eea008989f8d8093a64. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/RSA141325008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbcb77b765f2f5bb16a1ffad4237eaf5ee79f202a79a674f62531574675837b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:37:41Z), 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/RSA141325009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8af80c0711ed5de85780602c513b94c53996c09e7547793896feba58d430dbd. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/RSA141325011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c66c5bac43ddcf0c51dbbc57f9ec0abf69e5cd0b0f0840a29a810b673b48abd. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/RSA141325015.