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 0x406b515d12c47b34c153a2871bbb077cb38dbbbddca6a89675e9e6b9021880ca. 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/d6edc42b-3d4b-495d-99de-e01200d17e65.json and https://artists.proofprofile.net/proofs/artist/d6edc42b-3d4b-495d-99de-e01200d17e65.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453a06697b5b3c6b89baeae0c290c0039109777d97c672215897f42b44bb00fc. Chain 2 (Bitcoin): anchored in block 957212 (2026-07-08T18:33:44Z), 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/FR2X41529978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad57502efca8f29946fb8b7346bd0c6466fb6e84887bd114f3473c8273716a40. 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/FR2X41529980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eab7441e38a9316204ddc4c4a0c282ef14401d037679d6b424ca64c5bb7386f. 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/FR2X41529983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3226457e6c21e26a8b059eb4aad809bfeb5fd648e9320fbcb768dbf85bb3f82c. 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/FR2X41529984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36a81617ee653151258138bbfe1cc8f70a8ef2ccdb03aebef4f55063705266d. 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/FR2X41529987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f7a3b8eec466556bc71f3f5d72fb744bb2ea106d3a10ed508b1382f07bb456. 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/FR2X41529988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b7c19667e61b14345d9e43393987b9246d1c8a9827c03d735809f8c7e4f566. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/FR2X41529985.
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 0x0bd30fd102d4f12adae60e2279649db0abafff24e7fe7b04b5445f8f799adbbd. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TWDL72306773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d7cdbaa76b15bbcd7b5d0e6c7038d8465a46e63ed4768bae950c005e87ae8f. 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/FRX872292940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda78c178ae5a95621d680f26d4704a52eef8090d336bf462c64c19e3bdaf3299. 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/QZNW72319021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc94555553d705fa9bbe38b86552474a64e694c4f98930f3d2a5689102d8aef2. 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/HKG732284062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b6291e7e0b10cc2348c4ac747d864a04943f90cfd7accff5af577de0a7ee14. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/HKG732284063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edccfc4f3aadbfe422befc9e19435301e4d4319cb056901214fdf319fb36800. 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/QZNW72317064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37531c2ab4394986c3c84796b1f0a4fd078b3f7230eb59048a5f599326dbc494. 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/QZNW72317694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ae66ded19ae6726de2e974ee29789dc9a14a8172f0250a49278ff81953d515. 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/HKG732203625.
僅你可見（《這裡禁止戀愛》網路劇插曲）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0380c86fdfbb79399f0b96e7450344a9ba5962f134ef6fb2ce828a9845b5641. 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/HKG732151998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6cd064e624d106b22f4109974162fd15a4462e9fd3aacdd9414941c2dd9fb6. 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/HKG732140709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8427417ec610eddac1e39d13f8d299d4c592914bea9303abe5283c85adacf289. 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/HKG732102985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940c5808ebac1eb28c4e3549ecce2bc2d402aa40733113eb399a6f8ab0b67f73. 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/FR59R1881717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8326823b6fa7932177fc868011bd99cdcd55a40fe17bbe7945a768f5a4b6d4cc. 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/FR59R1715749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9c1d690e1006597916cb74f14aae06e012cc4056b904670a1f62ded99e21dd. 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/FR96X1677047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89c0c39b007339a60186bc7ff06006e6c51f2e366c16c7a74c8e3f7a0ac8f19d. 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/FR96X1677049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e1894dd47ee303626283a59179b6d3d4c593c432d6859e58ab5238417df26c. 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/FR10S1687534.