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 0x40c0693e10b362bfb6c7bc30c46ee4cdbf710aed97786776263fdbd6b1caa820. Chain 2 (Bitcoin): anchored in block 953621 (2026-06-14T09:42:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2150feb0-3f31-403d-baf8-62ed55e1666d.json and https://artists.proofprofile.net/proofs/artist/2150feb0-3f31-403d-baf8-62ed55e1666d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
时间的答案 (《披荆斩棘第四季》主题曲)
时间的答案 - 《披荆斩棘第四季》主题曲
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 0x20e64541c9f3d9d53b77b09cc55eb8e6a455abcb2a8a5f6258f42ea8774372dc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA092416015.
时间的答案 - 《披荆斩棘第四季》主题曲伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2613bc9750d18260746dcb9f574220dd92700ec1b17aca23098c1ae9d52f80a7. Chain 2 (Bitcoin): anchored in block 960187 (2026-07-30T01:34:28Z), 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/DGA092416016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfbc2a22fe4f9aafa3e73870cc17c19b7514cdfbc6ac63d40dc33f3db9511199. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/CNZ632400565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cb9773dde67496d139c40854881f2d48f6c42bf37c8ed6d749e5fbb9d2c76e. 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/CNZ632400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5af56627d7e172339c1c059bc4470ae9af2d20ea5a50bbc06702c1bee700565. 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/TWU712204244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd12612e11ca5452195e9ed102f4832cc4d26ee285157ca6a31275a7ba69d40. 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/TWU712204245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03dbe3b10df645bde68b61a5e537bbd953ae94c6817dd14b562796ff4f6a2f7. 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/TWU712204246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c32e8b866e23ba519e176817bf9125c56aa6adb6298619e89875cc0b2b108d. 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/TWU712204247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43477ba8576e0044f84413963d9feabd072f3d70187417f548b9e6fe2e5e836. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CNZ632101030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c2c0d53d81cc90829572a9177ac0209e508dfaabc3d2efc334b2768943f50d. 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/CNZ632100957.
鬢邊不是海棠紅 (影視劇《鬢邊不是海棠紅》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c58540126a60dee252a7d428ff6901b07f0c8b0f0b6a006fd5c79f5af7355e5. 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/TWU712001854.
此生此時 (影視劇《鬢邊不是海棠紅》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb44ff50a2526ef8746e4e8194d4a982e801f3251eb2a8c8ee0f6525635a0e4. 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/TWU712001856.
此生 (影視劇《鬢邊不是海棠紅》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9c7820e367e7d75c112dd5ecf5ed1535abdee6a505663fe00f468f203f12c4. 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/TWU712001855.