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 0x04a367dc309de4f84188769b970a9c07852311c5fe1e00af01881ba10eff1032. 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/37fc3ec4-1cb1-4640-ba6a-06724485c0f2.json and https://artists.proofprofile.net/proofs/artist/37fc3ec4-1cb1-4640-ba6a-06724485c0f2.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 0x4ee23ef09678cfcd5129fc47d27ddae04b3b93919ff95c27d4f72343fd559152. 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/FRX452403059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebafe617d10433b192b4368a3a9f865744423252bcf94b4355b8eb497baeda7c. 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/FRX202456192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb526858d4214f5e738befc29013b1d444f28865b2673fe7d0cd5fdb5ae9ddbfe. 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/DGA0M2424692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da93093f22bebb0d2c0b93960e1847e135b25287754b591e095c580b81fb973. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DGA092428193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eecaf6d45d52a98e26af9e2506508fe09ed4881d7e09e84f6e16904c5d37b26. 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/DGA062477639.
冒险再出发 (《合金弹头：觉醒》周年主题曲)
冒险再出发 - 《合金弹头：觉醒》周年主题曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb514ba8bc9435a1cde0cda9ba1089753e365322c4520c03b6451985664120f. 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/FRX452445522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c545b94071c258681e822c119a0f7f2dd7407c319dbcbdb1fe30e9a30dbae0. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FRX452445496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9709dba73a6a5bf3cc1ec35b61c9f88e89ccc5c06b339fc814b1fa2ff1be32a1. 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/FRX282453939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6541697b89dfab968338f5b10ccaa480ae21734bc4107b0c07187ef3307a4480. 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/FRX282453938.
你许的愿 (动画《大王饶命2》概念主题曲)
你许的愿 - 动画《大王饶命2》概念主题曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d3fbef5287d7278a8747fc2498af46c40fb8c20ec07019669bcec951af63c2. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/FR96X2480267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9d62a6e0b6931dacb60e81f60ecac9450b0c892224c2095d03d2b154e8380a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FR96X2438062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6db16a7dda2b4c9e72dc773d5cac40b99dc1fcba96cdf084c3ab4fbdd90f26. 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/FR96X2419417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24a4ee0b0c4a2b1f3448791532330231d830a56c19ba9c51f595840a9d2419f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR59R2494189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6152107da240b343a075cca15f69ed2da284dcb1c7d3308f55f8d690ebcade02. 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/FR2X42423638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47e103d3aea5236fe2fb96e6eba83314a299fbf05452436d5d695223d93a41a. 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/FR10S2446732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb75ab606f62d29bea8c3e65f0da51d9f1f6b5e7e760401ce9f0735270df9027. 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/FR10S2444873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c67de02702be86fab45e7c92fb74d5b1186c01058bca028111147bd7b5ab86. 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/DGA0R2317259.