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 0x5d9b7ffe80cb54c044aa1f8727a8e8cf0fd2a111e92cf8315839c8cbf1f3c16a. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ecff1f11-6d2d-444c-955e-543f7157736b.json and https://artists.proofprofile.net/proofs/artist/ecff1f11-6d2d-444c-955e-543f7157736b.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 0xf3fd52f1ced0306338b5d6484c39ba3b7400873200bd695e907bb23e8c88948a. 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/FR6V82140227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ba962d37c78e69ad545c3371b5c92ea536d8d462de96e10b38edf63f2c01ce. 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/FR6V82140230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14beb81aa64c2dadbc2a8e21c6e3cefe2699750d3ad6a7c9a163c4454ad2a46. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FR6V82140235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f41b3dd2deca562fdc80b814fbc4694878d565c2e0669d287d7f5554c3a03e2. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/FR6V82140237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ece519adf603fa0f2a7c4966f200f1c3b50025684f506385f14787177eb1566. 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/FR6V82140239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cab32ed7164ec2dfb629e52919c5cf59f3bed58943493887b0ce54cd32683e. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/MYVC11800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc9f1ea32b803de49df37fa4d36b0631e04947fd33564b5b4d78acda5029641f. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/MYVC11800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b55a38b1df8461ff0578450d52d9e84cdf7856452f6135d95f763092a3f89f. 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/MYGS32010001.
881原著電影原聲帶 (Original motion picture soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e2275c830940405def06733a9346f6c7c391b0d7c8d70297e6778f34b965ec. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR6V82154903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73c10aaab1cb58675c37e9df1c0b1fc75a7f8769ca14c406910c718c458654a. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/FR6V82140240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88a08d78111e2c79534dcca78e05c3b2f7250a6d525ec75944ef8990f212a84. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FR6V82140243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbed46fe7f36890720a9568aa24876746f77ca4f92291617e4dfae957c81e2cc. 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/FR6V82140244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6626f8f6718efbe417e56a95ad15e56866b9b654e801212bce8d01c184def551. 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/FR6V82140251.