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 0x558260c00e06a627eecceb9d501d50f46de9a895fa8d81191e9ac67a47e6061b. 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/f2b06c11-4b97-49ea-b82a-51f800fb6d5e.json and https://artists.proofprofile.net/proofs/artist/f2b06c11-4b97-49ea-b82a-51f800fb6d5e.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 0x4cafd18d9177eee15a00c9e17c6409c26c383c79e5f8360699b815151e0888a6. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/HKD012392072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27d486f550575e4ea5145c80cfcc3a7a9d8b614f9b4aaf050288d0651154cec. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/HKD012388391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631abc68fe22690d5ce73f6286c77fe0a0e55e3d708e5fea810e6c5041ec2a09. 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/HKD012390401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc783fa0f67b0ede93f56993e40066cd6afb2eef7f0b27fe7d923b4699da3806b. 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/HKD012383187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbc010d810fbea9cb51f5435593b2f9bc4f1a5549b429e7c6c17c5b5aabc63b. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/HKD012383170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd631d4c7af6b972765676749c5af9ab063ed0f2f40b0da96f091ddfa1ca690b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX201842530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db54627d1c17b18f5f02187b98f564799d6a9fef541cdc4e326cf54d48bfa0b. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:18:52Z), 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/FRX201842532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66cacf2f1865c269e6e25ad6f7e6add16b07687ce6b7d50fbf2d3415d56e7e4. 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/FRX201842535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc544ccc846b8299a4bf74ca93e63c0177355aff732cbe002bbb85b240535c991. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/FRX201842539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249269a443394c11b1e37e89249824ec017caffec970061deb81a3176d675f02. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR59R1956014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x588bc06b93fe777ef1bf81b7603da3d7b4a0b7265a0b44e0dc31c19502165597. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:27:08Z), 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/HKD012388886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf0ed6fd02b3e805531c157c940a1e2bba294591014856c630993bc98650a05. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/HKD012388392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a263472b9c6ea320afd17340818d8d73ca5aa37b8450bcb55771b0fa23ec6d. 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/FR10S2043259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a0ca8ea21eac6f71cd64cadb51039754d5060de946f2f6d10129b1f394050e. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/HKD012388317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d8a99d4b7ea61c93946505399874b9ac18ae1e6c44bb0cb0cb86347260a86b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR96X2059318.
爱情本就是来日方长的东西 - DJ沈念版伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4090ff768d2f1bfb4e4eb2cefb024c5d551119cb467b1137d5a2cb53f7f4ae4. 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/HKD012403658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe416f9a731237973fffc53526d7b7b9d99bdce634ab64542e0e379b785b38ee. 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/HKD012394826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d6212c73c5b6c5c86c4ff6c0710f2c9ab00951850fc70b12a753a5ee052949. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:30:49Z), 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/FRX282020289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3227c7eb4387fc1bd2617168544b259ad753d870639f412806940b586955e1a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/HKD012396555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8d59bbcde08fb48ce440814682292de216ee9c00362a843174d62136386a4a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:11:51Z), 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/FRX762057112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89142eeb751df7cd2f8b479ea1506662159f189144f70ad104c0d6917624529e. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/HKD012396542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97284c9b60503e6f7240dd05228d69f4620b8d81fa7b33bc4401cec686162524. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DGA062045809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c4cfd4b07d87d2f64792034632bceb7ab6313c83f0b70bc36de69e94469da4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HKD012383633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a866d7ac2afaa7ecfcea13a734f81915481e23195e4e4b3a4ba4e8fdfb8d35. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/HKD012392569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6aaabff25b2a6585be9b102a0ef35ad8be2b4ccabf99ac55871147efc82b41. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/HKD012388192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef5283e1bbf7dca45d46fbc692013009a0549d1c7bfec40ddab762d63c9b6f1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FRX762132623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2863410aed8d85d1da96afca750323af0de1069cebf891f98eec727bee0b87. 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/HKD012389604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521f6bcbc03b2c417ca9efe1edc243419b596b0d228d8beb5bc705cbc08aff0f. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:03:48Z), 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/HKD012388953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529660315b6744bb688cb47ba21a0ced54706e5aac19000f48c9f8b6e5d574c6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR10S2471748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80a9e1c6d549b1c2c4475caa52abcc65b519d4d4f8cdb1d2f238a1af0e73548. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/KJ6A98143793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccda15c88af5440a75869467d9a4e30c92dadfbdb7e838b6afdf6701ddc07014. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:26:26Z), 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/KJ1DB4538102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c52b59b781712a8770afae4043a1d0936e6b56e0aa54cd2d5fce05745da99d0. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/KJ1EJ0801334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1769f225dc60712af420ad999a65a9d173a82293c6eaef9d82cce3bfa8f63916. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CNZ331800375.