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 0x37836132dc1fea5972fdbc32c86fd474dcb04767e0c00a4c8f406a71952104ac. 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/093677fa-9d44-4f76-8bcf-9f5fc2137c54.json and https://artists.proofprofile.net/proofs/artist/093677fa-9d44-4f76-8bcf-9f5fc2137c54.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 0x85a000e75572b8da8003849f1b6ff6a054c890111c2f4d511fdeb0218357d44d. 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/DGA062369165.
《完美先生和差不多小姐》影视剧原声带
完美先生和差不多小姐 - 《完美先生和差不多小姐》片尾曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0503a80753815a3c78f93403f6156b3e1d1f4ac5cffb1880454afc0238805884. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA072305018.
夜问 - 《完美先生和差不多小姐》片头曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c51171ddb322da75817c7577bfaf1e1769737f0beea407d38852bdc215d75dd. 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/DGA072305019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a36170f598731a5bee77cc61157fb61df68713d47396aed7ea6b3ddeb963d5e. 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/DGA072305033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff52f41fedbcac7cba93afb6b6fa825f9c113ea65bb46f4c1c115592838906cf. 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/DGA062371670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7691a28e04b6c563b2f38d9b5ef3dbc9f0b9391f92f8b080f7ca43b71036509. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DGA062371679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5907719e9a164490c88c9e42b50faf02a72143617815c2a69b9fa43d2bf2bc9c. 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/DGA062353492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57ccab810009884bd2e4f48f20a4731c26378fb45debeef0b4a5e13dd52d1a0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA062353493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ce47ea4b968533c8384240d11db0f3c3f5dc1912d720afe119880495262569. 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/DGA062353494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe031ec7cdf6409f83ba8d7b4bcdc8b260fe159cfdfa5715b912156ba3695ce. 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/DGA062353495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e33454de85ace083ef09bd86a0557ad2e64039914bbd65c5479c0610379589. 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/DGA062353497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa526f5a8918339bf7bf9fce5702b670aa82ecd6c48fe46c63dea82c2534d9685. 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/DGA062353498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6ecb12aeac1d31c8a9332521dd30ba8c4f548afa92abf5d0ce8b137f4eedf4. 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/DGA062353499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a853076eb8cd5eacfc13bc16d7bc4e918e417d8b53551ad015fdf754d373f0. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:00:30Z), 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/DGA062353199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529a503f7c180f6d43bbc876cabbbdde7eff40e032059534ee7ff952e4e6dd4d. 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/TWDL72400186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60415c56e08a234ba6b5bd80179f4e8cbba1e8dd0298fcc1619e8b1a71a0a224. 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/DGA062369269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5246f4becf815af8bebaead97e78dafc6408ce5ef293b581a17a5713da0d422. 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/DGA062369263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0739c0940a7870750d1b78fed7798ca8a29016161b6a6af84fad3fe0b068cef7. 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/DGA062369249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c05fee065ead970e4aa4f1ce8114dfef2858b6349059012aac626941d62fe5. 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/DGA072304498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8faa36883eeeaaf1235c3d0d65d8b2d01120a43d1289346a885190aff408466. 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/DGA052048058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6fec1c4bacacb54f32496f12612a50cda375f379d8dd250f3428a83da0bdbb. 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/DGA062354806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a65eec633f216b4d7741a0dfe143a0ab3a7a7a2c0afa88a4b30d4b309d502d2. 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/DGA062355199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b3cb4ccd4d4110162fb4e9ce5366d27a4c5ec94a4701086fb96eae35a4de4d. 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/DGA062368526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e71da66735d6e77bd3f47c441aef1709c62d2ccfe208593c67bcf72971fcd16. 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/DGA082427016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac456fbbdf3159ec05fb2caaed26d575fd95173d6c6ade0a38d2d37e431839f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA072315158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf76acab752f9c9df0d7a82b517d52db5fa91edaf47b3bda196208dd50b73cb2. 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/DGA062367654.