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 0xc0baf0a0d8d326c0844db354171e7abe132ce2296c8815a7b97623acc6127d03. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25f86f25-d500-431b-b96a-3456f21f5695.json and https://artists.proofprofile.net/proofs/artist/25f86f25-d500-431b-b96a-3456f21f5695.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
鋼琴童謠 睡眠兒歌搖籃曲 寶寶胎音入眠
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 0x70ed9b442e2dafad83ab8df1324e2de25b9187c3e2cf0ecd3a1e54b1b0aa2d7f. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TWAA72200489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bae4cadbd2e643b024e3f2c68911efa9bcdd6ec09fb8e4748a252197ac01df. 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/TWAA72101275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e71cd4103f9f74df5df76fde14e6204dd7c1cc985b1bc23c659c4a82550b8f. 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/TWAA72200502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3ce6b7b8ad6179c861061ada3ef4aa1bd873d95f9b965309dfc0f8bee29000. 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/TWAA72101288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712049f19576674f8b5122f6d6632c82b74241eae96116dda2dc623a0321e926. 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/TWAA72101280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd208963ae89718fbed34babeab94f0bc93614a72b08b11c5f1477929b7be27a. 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/TWAA72101289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf19013c5b2389c3a0577e1c871d7f9c0039b1727ddaa7d79248f7d303d002b. 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/TWAA72101283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedea0c4801ae6fcbe920632e0a951fe893ea779d07151d469afc99a71615a109. 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/TWAA72101285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dfffb85d7b1ea1d40046d215aa9989442d22e168eb0cd01c54ac6fceb11a6c. 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/TWAA72101282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9949ee61a9d798ffc550899bb122b0b953f9dfc12a91bcce615f7aa2f593fed. 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/TWAA72101290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b540f19eeeae352926bc57cbf0baf21cbfcb6d0f49182d4ca89dd2759f5bca2. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/TWAA72201099.
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
寶寶睡眠音樂 卡林巴拇指琴 放鬆助眠雨夜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2087127953e99ff6757f5568ca43d027db75f6668eee5274e9c9df168b5a0f89. 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/TWAA72300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55d8d117eef30183c4dfed1e8f7f3bef376e8bb9d6a47632f50a2cc20c5c1d1. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/TWAA72300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6550a147162f859907e5190d68b6fc531a3414d6f699d17f8a44c6f686e6ca. 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/TWAA72300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73688e9b168aa72e21cfdc9f30516f17326bf00d0e76604f45edc97aff760fc9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/TWAA72300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8739549dcf4a6410adc1ff0113c0ab16a365c8ebb9ca09c81b30658924862fc9. 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/TWAA72300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9dc719805dfe2d1bbd6be74aa103965c6b44f9cf57c621a2ab16bc5473d8c5. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/TWAA72300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2531ec8da8014827186d015099cb5feeffb874a65738451b055f471c2f55842a. 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/TWAA72300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9243fe764bc5b12ed1fdc53e1bccfc3661409f9f050227908d7cdf88f3c65ed0. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/TWAA72300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8a6cb9c3ca078b28c0cc2c455dcba4b71622b8757ef81a2bb99f744b9bb13c. 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/TWAA72300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d42417ab5d487beea91cd21071ca304cf2b614861c1127d44db1a38a88e366. 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/TWAA72300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d010b3c921e27b94bed23b52986d1f3fcf148d34a312c8c63f4e8d51b37d265. 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/TWAA72300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500d7147b6f7ade4b44043a2206674cff48ae1b8f9cbdd31bd1a00bd8ab75c23. 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/TWAA72300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a3550a616182c5340fe0e35a4b50c314f18563032b21b86cd10d8df4df7ed7. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/TWAA72300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca31cf9cd807d3891d296d6edb4eecf66fb95b0125989b54e2fd22fbba6169ba. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/TWAA72300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254021a5a0a1402008de7a7a07ad7933b65b341775d35d1b0998e34055b3b157. 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/TWAA72300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32afa8fcd0aaf6b5d7de957b609cb0a575e0a545fdd898e9bd38eb7c663eac43. 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/TWAA72300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734171c2f313c9320b17ffca221dd4b8b0a178be2921a3db6823b5afc3691d63. 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/TWAA72300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707893d2932332b9ea26a8edd1eb75761b4cb0ae90b1d77355ead11bcce64b14. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/TWAA72300021.
寶寶睡眠音樂 睡眠拇指琴 兒歌助眠音樂盒
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb532d9316e51da167095bebbb3b17e81bb8ddb7c7b9f29e315775e68666615. 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/TWAA72200889.
艾爾加: 愛的禮讚，作品12 (卡林巴拇指琴版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eba3d63609dcbf193f72e4231784fe910dcdb4d26778e6cfec98f309fc275a2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TWAA72200893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0674d32aa9a10654abf671d783c01c1faec73bc6c9ae096fa8e5407664a64dc. 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/TWAA72200896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ceca94fed55c0c0be475a7a926c9b9497b6767013cff5136e14375ebc9c2d7. 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/TWAA72200897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f5561c2c9927369585be30072cc51e7c4588404679a2d641238fc8f9b110aa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWAA72200898.
芭達潔芙絲卡: 少女的祈禱 (卡林巴拇指琴版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x635a25b0cd32768756c8f9a0b4073081a5767ce3fa54b3d2ac853ee35ed8f50a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TWAA72200902.
宮崎駿音樂盒 寶寶助眠胎教 水晶鋼琴古典童謠
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0eb8444f5e5c5640115076dd9715e33cfb0fd476170e3999acb00b9cfbe5ea2. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:41:18Z), 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/TWAA72200746.