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 0x8e6f853e1523dc2d993a9435ae07cbcf62220566af2eaa4b77db51898d640faf. 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/8425f8ba-ec93-4d30-9234-070d22356e6b.json and https://artists.proofprofile.net/proofs/artist/8425f8ba-ec93-4d30-9234-070d22356e6b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Xe Chỉ Luồn Kim (When The Seams Come Apart)
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 0xc96f911ad6ac013249322aa766cc4c75bfb6d0c19a35f80633f0ba9902204648. 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/DGA062064241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8a04de385c9dc6662f4c66aa4e1228dca071e193a7bf642b2759fecdf79598. 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/DGA062064242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65930d1dc8d9b8a09da547c1c395106a7fda845106bdd5388519b8193328ae1. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:34:42Z), 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/DGA062064243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee75649bd681e7b1906a543f3981422ed47221248320a8e510d4a0507bfba055. 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/DGA062064245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5744a052684281c5619a68851af6a911d5cefe86804afeeb4dbd0f18290228. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DGA062022689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a93d68629f0d4638f10a87276c9eef8e5881c5da31ded96319d4c71184c8f21. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:40:25Z), 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/DGA062064247.
Múa Sạp Xoè Hoa (The Dance Of The People)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d60ea678b9638284f092607173612a208d890eb6f3992c17ba9113bc5a2851b. 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/FR2X42411324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x851e01ed325fb2d9fc6da038847020477023377a7bedde46730c614d109a106a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR2X42589977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b58c90c1d95da2e21e76be15ba23e791e8259a1e6050eb487fc1dd42a70297. 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/FR2X42589985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c6992f9a30cce067a22ee9e3036968ee25f5ad050be8e0f6027c6c28717544. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:40:16Z), 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/FR2X42589986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a0f8dbae83acfeae1d65d1cab248059f785bbd068cdc3d51f9fab02d6e94ab. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR2X42589978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a96d55c3ffa3126b02f9725b9d162e58c61a9933a32e3f7f402546180e01c8a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:32:13Z), 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/FR2X42589979.
Nghinh Ông Thuỷ Tướng (ft. Phạm Anh Khoa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa307b8702d2d2d41b47b4f3f8c8dd9d79478f073b53f82765274fb64e95995e4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FR2X42589987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5176a5994c25602f3b42e2cfa406629398cbf2cdb7b0060ca275712f35a4f567. 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/FR2X42589988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c87a0b9ca0aaff4813602c55287606ff52b13e9c3ad1e714fa30219cdcac8ea. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FR2X42589980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aba98c07b3a1b585c9bd1764ff26cff74385ef9fc47fab533c1561732a8c7a6. 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/FR2X42589982.
Dừa Sai Trái (ft. Phạm Anh Khoa & Chú 13)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b7c99656d0de09039ff40ab6f23e3803001f8744459618b4d53952d2fc0400. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR2X42589989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde657f2a18c52277f7ab3cf5f87d0dad21966d6eb13ada450cf9498354487082. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR2X42589983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0500bea5de63db6aafb2e9d6b7622f273b2bbcac746425aa4b4859f32d4cf51. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR2X42589990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df797659b8eb698ce4a2d24547ca0e7cb70116c006bcd88d58f99dfd1959b2c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR2X42589984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9f9520e68923680a7a1def6e5df54770d0b09655347db6d67b582c354a9ae5. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/FR2X42589991.