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 0x6a5e90510af3e53ac472f6d4156b2a17ab8ea5c13ee4eb32d1c245413d92e16c. 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/eff80948-fafe-431f-b6ba-8eb6ece592e6.json and https://artists.proofprofile.net/proofs/artist/eff80948-fafe-431f-b6ba-8eb6ece592e6.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 0xcec7c4a3acda9bdd8a31b02488503d0498677b0c7008dfaf3752b8a087dd930c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/HKG732128530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbf98eaedba08c58144e4946f55b1e1345a206e3c2233c82e60d30ea18355756. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/HKG732422581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0b282fb6ecea1f1ef5d62bb780862063b19fb25bfed40fea5ac4f466adcb18. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CNZ632300496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32df9c0ca8a20ce22949bdfdab46ba19230eef04384d3c82e8742e6e325a850f. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:21:10Z), 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/CNZ632300683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9676dbef544457c53792d7c6fc1ade59a98f379c7ec43275c96eb0743cbb2fa4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CNZ632300677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef21f768099172a25689920a8fbcffa5c3a0b60eeaab2b94d65f3def236f33dd. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:53:39Z), 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/CNZ632400409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020c3a6d86f8a8e736228607ee03f42c1a9043c12d52737d9a37c06ee87d4a99. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CNZ632400989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d3687cb2ceaee17934ff9e47e41ec94d3f870ff594fbf1c51611c43e6042f6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QNSM12402409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84823c07c0c17f59b4ab4b759f4aa14d0e4a9940b1fc91f52aee150f28bd0ed. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QNSM12400990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb17f416e8e2c93fa5d5937cd0c31234bbba22c7a1e31416f5d1b7d4001c0c4. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/QNSM12401085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508e8e9c34113f2bedcaadaabf45bb77f2e5b61f1e58315d4242e9602666c5a3. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/HKD012479182.
此生不换（记忆是条长线） - 记忆是条长线
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44284aad055b29313c0ca4b6d45d75be813da742a850c2c9f46b12de03131e67. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/HKD012496501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c9cb67c365faf6f9f64bc60e601877dbc797e8be7f23d5052c038dbe06c912. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:05:09Z), 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/CN2DY2503901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21447d132a816bafc027cfea7eb39c9567709b47e9997677c1ed0cee1eb32c7b. 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/CNZ632301134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463d9b7cd4c03f38fed7d751300c4569adeb2bcb269b07c6bc2edc4cff6ce560. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CNZ632301130.