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 0x8f9a7dcfbeff52322767d14798f9d5152665893a3403b3b3f2a26318b78ed8cf. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33362f29-77fb-4d1b-b7ec-1087dc0ad57f.json and https://artists.proofprofile.net/proofs/artist/33362f29-77fb-4d1b-b7ec-1087dc0ad57f.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 0x55db500c81742c5f1d675d5b96ffc8134439832c9401a6c18308c229b785d30e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/VNA2E2311448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c0a2fc4003e251e64f3b457346539e5e3e4b197434ce13b8e53f5d4fa13dff. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/SGUM72000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ccf673e3672e22a57960bcb01de90c98e50eec880eb255e930a036508c8d5e. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:35:16Z), 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/SGUM72000018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f47dd7206a77a27f145efb3a303f55eec3038055791ec7b2a52a8e7e054277. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SGUM72000127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b22314c35a3b135c05c77972434ef2e717ccf33cd05d8a680b3b175b97bcbf. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/SGUM72000280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b22314c35a3b135c05c77972434ef2e717ccf33cd05d8a680b3b175b97bcbf. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/SGUM72000280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c436c2af38166ea2a28c589d15c25df1f0ab94e62da294f283ad816ec015e00. 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/FR59R2194462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c436c2af38166ea2a28c589d15c25df1f0ab94e62da294f283ad816ec015e00. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR59R2194462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27553385eef73318388a163eabbee2d593eecb6a11a49c4acae85cf4f4f639c. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:19:38Z), 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/VNA2E2311427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27553385eef73318388a163eabbee2d593eecb6a11a49c4acae85cf4f4f639c. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/VNA2E2311427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0ac76337764b150835fbbca34c290ffa82ef56c8c625f83975d3f3863b162d. 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/SGUM72100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0ac76337764b150835fbbca34c290ffa82ef56c8c625f83975d3f3863b162d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SGUM72100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e498209c7c50f1215465b824b0cdc4fcea9f3e22dc7a75c59206f9dc5d8ba1d. 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/VNA1M2236771.
Ăn Trông Nồi Ngồi Trông Hướng (Lofi Version)
Ăn Trông Nồi Ngồi Trông Hướng (Mhuy Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87f8f16939ec4959868cd9629772bd1c8f89c6583a30755f369473566778340f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:03:45Z), 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/VNA1M2279882.
Medley: Hồng Nhan / Bạc Phận / Sóng Gió (Remix)
Medley: Ai Mang Cô Đơn Đi / Hoa Ngũ Sắc (Remix)
Tình Nào Cũng Như Tình Cũ (Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1181b6505a4e5c6a8472bca36f75d858e751e9b1508ab6ede2c66867e49beb0. 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/VNA1M2404768.