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 0xdf13022ef6388f761faa394026afd20fc1c0aa7dd83bc9a2e3e974bddc6175c2. 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/cfae12bd-596b-40b3-8e3d-e836d16cf0c9.json and https://artists.proofprofile.net/proofs/artist/cfae12bd-596b-40b3-8e3d-e836d16cf0c9.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 0xfc454923596e524acb7e4394266778c4733f0624f2411fa6d29b8182e65c1feb. 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/TWU711803997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb89696c8c61fcf64d4f05cfb66bee07e2798348eafe8920d41cdcee1eceba9. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/TWU711902726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d142cec9b9c61e2e8266fa7fd649f2bbbcce8c447c874f046c15f09651f8c86. 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/TWU711903280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbbb7727600d34287275038132422b8126670c3b0c372f3c9efe17ac67f917b3. 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/TWU711904332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ea9fee7cb47b74691ee959adb7392c0d5e746bd21c36005caf374c8a67fce2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TWU712004308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced728d0f1d3fc5d21b45c7ce94460c4d45f3e1d26b301d4a3339d46348135d3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TWU712004310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913f28b04a9b79246cc4ad42dd64873594c496223d669a0a7529601abad1f051. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TWU712004311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb352eb4ebea14db7b5e1e8b8c3057cc36928babf96bda8aa47a9ddea760a9a7. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TWU712004313.
《星之遠征》（《球球大作戰》2022年度資料片“星之遠征”同名主題曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbe7a8c8d9debd934ae0eba6fb6338391096ebc421be7be34abeb65cfe575be. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TWCG52299653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f49168508397f18436f387e98aada5e39ed4c2685063c99392f878246997179. 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/TWCG52299657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252d84f9660f5ff335f44eb501ca8be1b75e3d9ad5242363ef1397a9447369d4. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-21T20:48:41Z), 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/TWCG52299658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3dff22f95087073f7e76035d7f472874804717cbb94e7ceeeb124681cf261c. Chain 2 (Bitcoin): anchored in block 959109 (2026-07-22T07:21:40Z), 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/TWCG52299660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22eaf50e02fde4aa0ae9b9636415511126d117f04d2012f72b3ebc2b18207362. 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/TWCG52299661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402317b298eabca42f8f50ea231cb3a3f032f45051fcf481ae361caf7f98bc13. 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/TWCG52299662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2586bd82a1d18bd95b5beabdb4b74addde7ad02489a935e897e0cc85b4e6ac7. 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/TWCG52299666.
理想（系列短劇《理想照耀中國》主題曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844875cd8e9d6f40c1240e097e5c725eab58a6aabb6bb511c7176a874bf34198. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CNZ502100289.
理想(系列短劇《理想照耀中國》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844875cd8e9d6f40c1240e097e5c725eab58a6aabb6bb511c7176a874bf34198. 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/CNZ502100289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe08f6c4aaf2e2bc9a100523d8dc5dc577c2bb60b270f42d445794f53efd1d938. 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/HKG731591337.
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