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 0x3f31937661de0c3108b9a4036635c229677e1a9d16c51231cf3158364cd1e133. 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/0d195284-3391-4dce-9073-4003e6088979.json and https://artists.proofprofile.net/proofs/artist/0d195284-3391-4dce-9073-4003e6088979.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 0x243dfe4c24b447d42603fc023568347510a09a3a1867b61a3eb792bbe5c615c1. 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/HKG732040427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288f581bcbb393aa0c627e653bdd2f69cdf3ac6ad027f272bd0150f847cd3ae8. 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/HKG731697960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ea2751da83495b6af6701befdad58826badac33b6fdad18b8a32480dcad799. 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/HKG732351841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a18b51cdebcb25c5808e40ef834d2163232df6181bc646f0f960b565f4af3e. 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/HKG732330026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67905d123a3b397e510b6840a9cc14e8960820091cb60a115741531f0387260e. 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/HKG732118563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x017e4d1339583e14de33b60da38b145058a24fe0e948f39808078911c1b6cadc. 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/CNZ632400677.
梦醒 爱如潮水 说散就散 感谢你曾来过 (Remix)
梦醒 爱如潮水 说散就散 感谢你曾来过 - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bfb54cc2a8360813c279ab759ad31318f93d9f08a33326ddc4ce3f01bce458. 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/HKG732411404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a2a56604fdcab5fc6879abbbc1d298db30669064db8e78d4836fea899e8e82d. 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/HKG731660951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e9aa47e0ace51af082980d5d7665122ed3bd382ff9e81cc491b891eeb43887. 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/HKG732345062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9cda0e763eb8792eb03b2e02746c66d06461f918fa5c948c53d07a3799f135. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/HKG732334468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d662fc643d12702adaa498bc49ac43d015d199e83e0f9183db6f245a44239a. 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/ESA012364070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a3dd270efeaf54921e6990a954eee535b7ca43f1f71d1f4869403b351b43f57. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/HKG732224950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dab2699176a09b84ab2ace952a63f0fa62ac83bb6089bc87e9319ca8e8ba16a. 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/HKG732130012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88580c623e32de38385a4705cee0ff1e51d948ebdedb02be5f3ba996bc67283. 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/HKG732029497.