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 0x69fadec4d90f4e4becce4b27cdfe54e6bf11ce533d03beb5067ebb47eca9706e. 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/9ceb449e-218e-42ba-8d8a-17841c231207.json and https://artists.proofprofile.net/proofs/artist/9ceb449e-218e-42ba-8d8a-17841c231207.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 0x84154f5f27c8ea248eeae36fed124bceea9100a05df0db7b0611abcaab824e69. 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/QZDA42173765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c0650c23f24de051ef653084f5fd689979fa1f2ef38966321994c48ff851c4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZDA82196853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b850d0035da7a639c205b5e9a14735024822b47cce87c2c2878858948a1083d. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZNWT2261570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507b76986e077f997be23e1e57329ba0e4a5de5de5552149cd7f67b46a111a7f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZNWT2261572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3e0d59b7da4dba87864597b8c9dd56c8361ecb17aefda0678f8ec1bb807417. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZTB92291301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd538635491a0cc0d13db6eade2251c47bc46eefb88b453bb409355cd8d82335c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:10:09Z), 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/QZTB92292416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119c796efd75c49c77e65bc48968eb05ee82e3ed8faa17d460754b12d5beb81e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZDA52326577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6a340f9c3b1832d286773de1b7a46241e7bbc26e4930fc46bba5a80652a1d3. 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/QZNWZ2311247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86eba4edab9318a931542c0493bf8c5a9bfe7227f5b4f7d32734ddf53cdd5b80. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZRP42323387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701efb7363c7f5dab3f7dfc35803137ca2b7473d6f4fcff6b7f7517e4c3cf9c6. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZTAY2361948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6b555b388749a2de57bb44ae11b9b72edabfbe5ad7a733483896bdc5bf1316. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZES72410909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1547f3e8b76cf971cfbae537e09798730c3a0c510a3429640324c51925a8b7d5. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZK6K2480366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd1f3df0eaddeaf8898015a48ba7e2d82a710344d4ccfc66d21ba6214a9ce39. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZTAT2454342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f19f9db87cdafa27be8b548510c8584e5f86d9e1dfc68646a2b6bbf601b760. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:45:07Z), 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/QZZ762418824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9997f816fc3593f79ad585f5bccf42a5655b9993f826d253bfd94ec9c43c8ed. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZZ7Q2404731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d5733e6c8d74288a9e74650672819b786627244c55156ec4115723137ce3819. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QT3EX2481682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d261d9d2cb1b48755753b2f3304575dcce40b5ddbbe0e71ca37fad42a0bebb1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QT3F32499652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23c28c7ad5dc0722bd66f2b9a0d90941a79774f0170f131b5b68d5eb6eb3588. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QZMEP2576854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b053526414580778beae417177d1b42604b9f79221a37c26247485ad57f47d. 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/QZTB72508049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fb06188b79851999c7e05288a1cf2184d2c5c53ec8ed42110664525d0759c62. 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/QZWFF2510715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdbc2fb4e3a4ec676d5a8248a5e30e0fb2342635938381ab8b9076955571a5d. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZZ7L2582774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3c20d38ae6982c1becda96fd0accd7646588948e28d3da8f80423c809b57f0. 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/QZZ7R2559390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc3880041354e29a9e4a27d4099553a04ba8b8fc666085a407d2e75e0bb8ada. 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/QZZ7R2559391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89ff50c3d6f7be50402a9ba65c6eeeda6868bb8eaa9fb2ba573d6ed2fa9588d. 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/QT3EX2555042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b0974d1e01f33c5ea286a9946cb238750692e525892d1c6e1bd58aed74954e. 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/QT3FA2543883.