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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9570797f8e69ca0dc4ac63d82dec2c2715f2d2b73691cc699cbe47b29e298fe5. 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/77bf5d10-ac7c-450c-b7a9-94ec5c59c791.json and https://artists.proofprofile.net/proofs/artist/77bf5d10-ac7c-450c-b7a9-94ec5c59c791.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4509c322d468a61cae7df3c96f6bc85b130360dcdee88f56ad80bf07e1b91d0. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/HKG732251350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f3ae0393ba999518dc832c98debd54602c8a41471b3559dbee5784ccfa985f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HKG732460603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af105585a1532c4f3a5c9daa78a74b83f0237f4e3ad471338a52110f1a6919a. 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/HKG732431861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13092241e73fea17b847d6309212f279e20f4f63f54ee2991b524ceea82d411. 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/HKG732456681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962a9149a7e75cb5a695742eab901ca33c8a88b37ef71cdf6af2a144f21c92fb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732428173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec5579dc81934133902f9ccc1663b76b4ca6933e5cb88a47a50deaaa8b04088. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/HKG732423262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a8c14cc0f03bc9f56c899cae27f20d06277b7afe295a1428410bbcefb5b8c9. 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/HKG732421943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f65d71358b5d667ecd679ba66123a213fe871bbcb811a496ffb817f03c2f52. 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/HKG732410160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6fc3678454233090c0573869f9c5345b5c1ced8ab0307439ca8238d23af7a9. 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/HKG732410174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dda155cf438710fb39f3e75885300a658e79837ec8441837953305cc32bca7. 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/HKG732407072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571022a2e3d2cc6b675fb2b2cb421bc7e2a421c803264d8f4aa646a7f1f44748. 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/HKG731686354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58928a1705686b44dc1dbf139ee365a07190763808c493931a60cdaa06f3b37. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKG732351326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d4380c1a5b8c04c701d89f1e6d4271b6f9b6e739c453ff927aa30895c69bb7. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/HKG732324513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe807cc23a4e342c80d4d55d19bc2683475f27e202770b707b009a71bce8963f5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CNZ632201560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b48e6055a0add236a9772d5d0929f4d950c700fde054a996978846ba439f66. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732281126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46f5614d4def0a4a47525ae9f7228937229d597a0ff3512ce5c1fd24f294edb. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/HKG731600103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433f6a76d7b6ac41187abc84cfa294dc5916ea1854fb62f3b6c51af3a36f1a85. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/HKG731610475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe116070b139cb4c89a27032f007efe72b554edfdc5b0fbee8311216ba9a7d05. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/HKG732267731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe9b58aae4a64274ca9befa7f55b7cb915bf22e39e6b8cab0655c660188e0a0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG731600179.
召唤英雄（2022还是劈开巡演主题曲） (伴奏)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c224fdfdf4840521343ccf39d12c2dc61e4fea7da74f2a0706c4f49c6aea0d. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/HKG732251352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab8bd304c6f212baf7c6b37397c3abc86caf434fa26c3f160da2a8ea26bd471. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/HKG732315245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39509181bade081183b865f21dc931277c0c18f5617f17cbd1d067a5df0572a3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZZ972325792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0d2f025098377bd2bf6c258ea053257b9edcb932fe155b3ef515cb28a173574. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/HKG731858217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b51964a0f59bf0530531232bf199c893fd37210a7de300dfb60c9d25d4ccfe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKG732105708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946735dce569b3ebfb2d1c08c27aedb1c2d79c6c288246b54fa57f040f923f00. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/HKG732120173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980e19e7b843fc851123bce0f9e8fdd87754af8dd9f76ea8bc949f9af9191f6c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/HKG732328223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb426863fb8374c249db37fb7e059a9b1607a9d0cab42a1706be36c9498bedc83. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/HKG732025280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed928c59626de219fa4f5ac9b49140b051830fde1be58e30528196993c93d68. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/HKG732013636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a846f535da629904edeb4bbb0bf2579e02345483ce88ad103fc0afbbfc87b4. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/CNZ632201046.