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 0xbd287128598f20a7bd95b921b05fb12a1ff57d64888d07b885f182497a8c5915. 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/8267e4f4-3f6f-4974-9ec7-dd1ededa9089.json and https://artists.proofprofile.net/proofs/artist/8267e4f4-3f6f-4974-9ec7-dd1ededa9089.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 0x40781fa223fd2ac6ad2db20384a4f26997ef8410feacdcb2a7beb5cb4d957eb5. 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/UKR6V2234153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9192ebcb7feaa3ad97522759fe67724ae90ac8f20b5ae170a527eb657265e5. 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/GXBNP2452934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8c13fac0c44ea06e59a42871ee4bc515c06835144b7d6e0859c915ff2d716f. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:16:23Z), 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/AEA2Z2458637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5a669e774e3b9026c5c5f27bc1f314728218739fac145e395a70a3385a18eb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUAGT2414153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6935da365637b2ae0820a81cce2c810e4849e37e6d6db31c820140924cefd463. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:20:44Z), 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/UKR6V2255724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902bd3ade806a86dcc04149b6f19e9d0836bc7bb1919d68a137273c7ca667a32. 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/RUAGT2414156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0fcedf85625c31350de2d7befe71d34d2e5ebc176bb173a511bf863b9b9196. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/RUAGT2414158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0fcd8834f65925e6976928b4cd14a5bf75650ad0fad976dfc2be95de1401494. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:02:11Z), 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/RUAGT2414160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb2c0d26ce6b56b194db9016ac2cc434cf78f9008eaa828ab5d322d167ce76d. 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/RUAGT2414162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3bec51d3ac4fcc6ba3c603e4376789ce8e66b7c7c77552f25f579dc9a95553. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RUAGT2414166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9bd899e87a0a036c956a329cd46cec86d27db6ec49e2c1d6531c70ac47734e. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:04:24Z), 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/RUAGT2414168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02059d8deecda0c7ddedafea04c2c506a6d835832bff3575ee4fa6e14eed347e. 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/RUAGT2414170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e4fc3699021dd0ed7f249ef971c6294dc96a195e1acf7a003af394523d6e48. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:10:36Z), 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/RUAGT2414174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34f259aec8aba08a03036f547ecf532b116d3a688e807da9892873eee1ff6fb2. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:28:32Z), 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/RUAGT2414180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x445ddba023a43f6dd2e730cb0f1083ed3b3e55bd225d7e72c3abf7f09a749f81. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:10:09Z), 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/RUAGT2404594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720bef36613910e4e3c671412201cf047fdfae083ea9c31621e68bc7fc28eb26. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:54:25Z), 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/RUAGT2414184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ff847282ec65626bef4b020c3d259e1d0843e446cafafe72b1534820ab60d4. 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/RUB862500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34321c8b4b2f9352e3fde83f2ba63966eecc2b8d8a3c27ad0672531d33b1a59. 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/RUB862500075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6df0b2de7e0e3392fc020eebb906d9986857997c75c6a1a8270b7aeaea3bde5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/RUB862500077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4bd3dcfd507e9d484a8c9a866c24bdaf00b796eaefb82981d3b885934e6ef8. 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/RUB862500081.