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 0x3cedc30ce64f804a0f96e2307a36e2fc764a1d8aa1ba9d7d4ccc82d700f65f93. 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/6a7113d0-ddce-4534-a150-aa0e543671e6.json and https://artists.proofprofile.net/proofs/artist/6a7113d0-ddce-4534-a150-aa0e543671e6.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 0x5ae831fe22cc7ced8b950dabc8779210c9bdb6f44eed0318007466d3ac0c53a2. 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/TWDK31900802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3035cf9686d870e2bed26edf614963f6a1ea559a9e15efdd2fae1561a3d9370b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:28:20Z), 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/TWDK31900803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df11c0229af301265384f4044694ad34423ae30c2dd12debe28227fcf735fa5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:30:09Z), 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/TWDK31900804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a71a691befaea3baaca9c9c7acbe6bbb7576a4d858058dead170fa2ae6c0ad6. 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/TWDK31900809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ea508265a50400a7a4b61e8a77ea42b6ac863d402cbda2e20665e18f23a67a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:29:09Z), 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/TWDK31300401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6981ec09e837969fbbc807d1819430c7242f8af8f06800055523d89a954785e. 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/TWDK31300402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd168180621ba58894933fb49fc530c9da6bcb8c4fc344cb0511ee0bd2c678c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TWDK31300403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4eff14862f274082adb48a5d46d4a3a4aa1b8e8c1f5f6f632667af3c57e58f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:29:34Z), 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/TWDK31300406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5a5f111128de34eaee4e424866704e02f00410053e2397207a62931b7baa1e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TWDK31300411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e82303d94b09f680dd98ec81da8b2aa2d1dbb3844474de30be6db49788f707. 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/TWDK31300412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99703e48991d1f40e53c4a4af0f7820f02cc248c19c69057cd903e737937a3e. 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/TWDK31100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83f6a0928c22d1697f50b74c4acd2949c038e24e98ef0672fdb853b547a5af5. 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/TWDK31100206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f9d10ca1dc594a916d22fbfb7a6b6a7b8cacbdf035712df4f149f73c852673. 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/TWDK31100207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9692c7199e60ae4a80291e53f65b5f31d75111c8331b05558aa9ee5abb9bc46. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:44:58Z), 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/TWDK31100208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d77f97245e836b724fd82901e6b020dbad7b98fc3a657fa793ddbd2af66ee3. 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/TWDK32000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443389322f9d14c5c596f8f5c719b9dc97489a703dfafd792ef1d7f95558a0e1. 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/TWDK31800701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbb6dfa4904305e0f29d1512b6906c64e3fc1b9cb5c957accacfa0200c6085c. 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/TWAL31500601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bc081778be57e9347cbfa266bdd1d64cdc6c7ebb1b5b5bd48e8ef5552379f5. 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/TWAL31500602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a14a7ad6f0a7fc16099641a0491da8943a382807b6f37e2cdbb917617f7b87. 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/TWDK31200303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa021c27febcca39060f1a9e3b3b645f49f52ddc3931c924eb01218931b95105f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TWZ031000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9500c9b6b4d9a9d16fb87943dd56e1bec1220130b734160944f85313c8632e4c. 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/TWZ031000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefba0b34b5c48f11292f176f08b93526b16fb2f013a847f56b3ff21439df161d. 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/TWZ031000003.
入睡 | from 詩人羅智成 —《滾動的詩》音樂紀實