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 0x46caa03986bdcab167cb93605359fa25d5e3d203068345693913461e9f4bf6ed. 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/7073abb2-3d2a-4fc6-8f6a-072225b467a2.json and https://artists.proofprofile.net/proofs/artist/7073abb2-3d2a-4fc6-8f6a-072225b467a2.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 0x89b6d6ddd7f99f69607f16e829c545d3f2ddf2124d8416d20811dc54250c1fec. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/HKUM71200155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab323fcfd65a8eb307600e17b448557f5d13505e242db3f8a49b41b0514c420. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/HKUM71200156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aae747aaa529eaee246c157d58ba34ebe1fda99d5136f7faaf2faedfe23318e. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/HKUM71200158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51692d16d20cca7e1a4f04d55fecdfbb167b66d986f6e73d6395c011db90d757. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/HKUM71200159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68b24d69fcc3970176f49e0115157682e2f18a63ee122ae89eef996f4491e84. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/HKUM71200673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54db2bb1a8171d9d445b039f4ac804097813fb0faa43420f29edc9949d9775d4. 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/HKUM71200675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731d76c0367c2bcbf938877d127e121f012cd84337bdf61cd9e6df3aa7028f03. 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/HKUM71200679.
一切很美只因有你 (舞台劇"勁金歌曲"插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f1554c940f13bf95a5f43557eb0e59147687adfb2fa748eb6f8ca307673113. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/HKUM71400759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688857ef970dbf53cc7ec3fba33890e929915c239218ec317e87e415e80c444d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/HKUM71500169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d72cd3eebdf51a60dcff582189a4df986e027827e229080be7e678e4780b2ba. 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/HKUM71700787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f82819d478bb47ebaeed02b35a813e994f8ea6606cf266f7504e4f9c08dc102. 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/HKUM71900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d72cd3eebdf51a60dcff582189a4df986e027827e229080be7e678e4780b2ba. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HKUM71700787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c1b321a66c99a26427c9db3f45e3cdb51840d57616c110cb3301007e6e466d4. 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/HKUM71800400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795fb520f1da9413d08125a9ee1dd1a7b5681af69cfb086a2f8685f57c1444b3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/HKUM72000058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1179902ccea85e8b0e0879322cb7380d5fae1436eea5ee6b87f40ffd4eecb0fc. 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/HKUM71800096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa31aa499333cb290055e37444b083f1579c12c78b50406187326c82c780ff16. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/HKUM71200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51692d16d20cca7e1a4f04d55fecdfbb167b66d986f6e73d6395c011db90d757. 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/HKUM71200159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x035474a42bec90890f57dbc8b074476a1dfcca5d81af2e820bd75aa82819ed6b. 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/HKUM71600803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c1d27bb07b1f1e9f908c2cea75a18179338370794bc30e1064857932c39834. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/HKUM71600804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9701f14a8483146b8a1ffd5a39646eac6cddfa8fb56310af8ee234e7687a80. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/HKUM71300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21025cc070168bd96d7bf65090564eda3bf5c060783fa7b7adf4842e444fa682. 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/HKUM71200138.