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 0x55762241b01a077c63fb2020b96289d49b0c3d03d12f23aba5d72b8865f34659. 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/fbdfc41e-e582-4f4d-bbe9-633064f40919.json and https://artists.proofprofile.net/proofs/artist/fbdfc41e-e582-4f4d-bbe9-633064f40919.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 0x529632139f285afc8e6fbb380e0f9ae1c80511d2bbfb2ce5894c0d1b85264b32. 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/BRMVP0500731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940cf3c0bbffed1fd596ee68129bc5d31242338e8f31bed3295b701360fa2db8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA371509649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452886fa8119573c149c6fbaeaf9879890d279ba21a95ad92ef21456c5712a2c. 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/USA371489685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa907d45d69a2f417d33ae68c7220734822073f12104059f5beef14d1be417d17. 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/USA371575429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2539199ad0773988e02467b0e6f22e2a581dfab59a6768fe3bbcd4bd842d780. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:36:22Z), 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/USA371575432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fa97f565b4cf53172523ca9e9e6507aea4cfde5c9b57bce0464a89cf8cd12a. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:50:45Z), 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/USA371575440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffebb3057d2a963daf8c13e831723fca37f40be29b931df9ad7d2f0a892d2b77. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/USA371616679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821ca5c3f15eaed231b2dd1a125dd435cd186d97814b3d6d5f8f09cbcb3f8a66. 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/USA371661552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5162fff1c86e9dac5f2f2a57c32d40c0a1aa9e685e259b223f98ef0b8f577ae7. 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/PTES10503201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cf4cc3ab4fd92810ce3b92d84865eb9a0db6083bfefbac2049cc3ee19cd6ce. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:21:04Z), 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/PTES10503204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c55d4c219ee63b56a22ef2436bd53a05598e80a157cbb96e9b83bd374a3cc1c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:53:48Z), 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/PTES10601601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d8483572af22ce3b5398073e708a3faa6d38390fd79740a61a588b725ee680. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:53:32Z), 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/PTES10705003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0796acef107a25be4dd7e9911f9d30f69453d835eb4c7bcc176b987851966c. 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/PTES10807401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940a15b7cde6e15398c0f12a1703fd663c0d417ecf4ac2c87ad465a15d830e18. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/PTES11009210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889e80e45008cacb8a270d7fac8cba6e11e285047040403f29b40cf23dc56ac4. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:10:20Z), 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/PTES11300801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c99131f224c3081fa1ce453713e17000cbb74e5b0a3d8fc17a2003e982ade7. 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/PTES11300802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa929acd0042191a16d1e73c4f92df5ba3c1e625e6fcbb63ce9eb836462a24d81. 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/PTES10705001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144ab18ee20e766911b2ee43c65a6d7d0715862b440f79401d54b87e8171f72a. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/PTES11409805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568b9b6666d1b7cf8d5c86ad64193cfb2ded1710a6c3d2fb33ea826b3bb5c0a7. 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/PTES11409808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d73cb304b1a57cd5be4cbe73ce19e0edbfc9a2e65ae5325b1e039eadd81b51f. 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/PTVI10000499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a42f9e9ba685a367d88ee359f0448d98a70117468c4426c099be5e47ac9405. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:35:48Z), 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/PTES11906901.