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 0xd54516e2d2c5a3dc244575c38df6cabde0450eedb8c13cf937ab8b9b73f5f0df. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f5697b7-3cd9-4e2b-8ec3-fe630af9a888.json and https://artists.proofprofile.net/proofs/artist/8f5697b7-3cd9-4e2b-8ec3-fe630af9a888.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
一本书一杯茶 ：轻松阅读时光的必备背景音乐
爵士早午餐：城市咖啡厅必备爵士歌单，享受早午餐而听爵士乐，令人冷静的纯音乐
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咖啡店爵士 – 轻松听的爵士乐为了学习，阅读，放松下而品尝咖啡，作业用bgm，听默的放松爵士乐
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 0x0e32e6bb56dd30bb69f677f9fb36864862a7cbaee8da982c0ecb6e2b0e542730. 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/ITO102129835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109272f544bc436751636924bc40b518e1586e7bde8c4125800ba39d7abc74f4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITO102129842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995af849c9693feb1bd81aa81e32ce89199452838ac4274735bda978057c3231. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/ITO102129845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e927a0072f7e430d2d0ae349ffd483aba306cb0b300d18276b5784c41fd2f47. 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/ITO102129846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ab65b23eddf27e93f8a8c50381b676b5acd256da44d51ef385012fa629bfb7. 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/ITO102129847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb531c730b6d6624926b39dd6e5c74e41c9d322cf0b94286a0592f687ed1f1952. 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/ITO102129850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b06a5047cb942a6c18b58ae803f3d7c26b90218477b85e4ff703433ccc71d5. 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/ITO102129851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3af3895071e6edc08b8674e7f223ba17760369cb4df5d434ae1c15f2ff3104. 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/ITO102129854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829f9e800239ae37a1eac07144f0bce80b32440237080b5b4f20d662b7d518d2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITO102129855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2540c5bfa93191469233b44e1d6eea7489c90be7ac737d03f54e86e01e4e5cce. 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/ITO102129857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6be321ad9dcd273ef917318fe9c9d871ac468d80af2e87027b768515e246ec. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ITO102129836.
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 0x4fde152ba2557cd02062063559f40a02308d7e6bd0745ca057278820ef326aff. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/ITO102129837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fa81c4dcf71029afc23d1700085801c67d42c8155ae2f1485c0f1fcb8e68829. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/ITO102129838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671f3f3f10215df1523d472512350e81cb7ea128ba25c454972b536dff38d038. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/ITO102129839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4945c902d0c6bbe7bf1c3f584f77b7af3162238e9c41e153378544b90e8b0287. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITO102129840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923f7c737dca635738d2c60991fb8d97f3436d638a35ef1f6f71b482f92cbb0e. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/ITO102129841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4453e5fa75bf6ee28ea1e5e01ba090688c1e0b631508526abb892a0b6c3f1f. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ITO102129843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51542faa8354f617503d7c0f40c0751a43118344b8a4cb490d384cb2ce50b210. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/ITO102129844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb434aae6e535b8b7e9bfba015a30a3415a718b640d72346dd676af6c767d9c45. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ITO102129848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3913826183192927b78da9e851f7fd1325370a34f5b4f6360fca931129335ed. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/ITO102129849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f601ad69f8be8f56342b8702c150a12cd7395835378818dd26c37947bbb677. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/ITO102129852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3a3aec10b377d64fc941f544bf562c4b2c703320151ead0e5fccc173cefbbb. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/ITO102129853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbcccab8c66f036a1109b88766278e6d6785c5cabe8ce3adc7db604bd1c2cf43. 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/ITO102129856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5bad9c917a4bdc9c4128b408478e4fefe48b4206934949d3bf0e064b1d296b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/ITO102129858.