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 0x1f3a47498ee624d5053bc96a76c146f0ad52dabfc02e8251bcb4ac9d0d596184. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15407477-1f34-4e7a-ae47-c332f576f9e3.json and https://artists.proofprofile.net/proofs/artist/15407477-1f34-4e7a-ae47-c332f576f9e3.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 0x85d32bc86380a47ed8c1786ac2f4f8ba1a1261072f66c175d0a99f9ed29bba1e. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:37:22Z), 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/QM7281572950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99224af999901d2b4bac1299a8061b63f32c2dc387a5ff5876f5d8cd06ef8e09. 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/QM7281572954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b777b2a2c558715c453052082160927704b11258720e1002670a0ff0bdfccb6. 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/GX3Q92107867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008a7e05bb304c70c6b9c45941250d4324ddac799bf7d1735e6c814ee324c40d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX3Q92185327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fea7fdc6d56fa6123a4519a86b59e8c333062686c6ac59c3ac7b39cbcfe07b. 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/UKXN22264978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752e63a37a02c35cf08639485b9cf6054510abc22d5c4d96e44a1f9ac5d34ad2. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/UKXN22264983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bac68ea2724a88d1d9631c25e8c9768610f04a2765224bcb5d175b972cebdde. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GX3Q92342496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf612aef909cc8ea7913fcdf6f476d37bc777b535435d901b3dcd824385235650. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX3Q92358301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe694f893faa017620db75b48fec723c9457aaf95567cb09f070bbe78f8947c0b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX3Q92358302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b0b5ca2c5607e83d50e142ede0d15c83a56abbe1faa3c3cbc725d882a675b40. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX3Q92358303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654f50feb861c0decd626e4a14c8c40877cfbc15bba2abb10a1c399f093808d6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GX3Q92358304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07698e640f2a153abd7c894e6b9e84f36ce4619db06f546d2e6d04ec08fb5612. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX3Q92358305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a76492940b1b6dfb781d2031f45b5613c3fbdc7b05dd6834bfaea6182e8f3a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX3Q92328977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3b8030065e54c703f331f8fff6f6ffd7251d474f66a7b5d0ba62894dadd273. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX3Q92358306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab2dde94b290b44bed3d9e44fddddfb93cd4c840ac4c5a70f2a25c3deb4f99c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GX3Q92358307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583045eda4fd881e407bd4ef780cfd86a27d883ff06acd59f6c059e5822c0007. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX3Q92308248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92dcd72752c90793099d91300b11887aeb9278322b1971307aa1a29da4b3da1a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX3Q92358308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754d933810db27d894d1d9104bb268f9d843ed0ecac51bb23bff4bba7a8618ad. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GX3Q92358309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903be97604af469edccebbfc3ae8e2b5367a43dae9094c186c7279f1f9c4b43b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GX3Q92358310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7b9f2007781daac984fa4aceb15552942cd4db48fd02b91f2b090858d3e70d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/UYB141615206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae1a2df3e69914531798dd3800bd5cd1548b0fe79103ccf575d9e5c03400844. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/PEAM11603003.