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 0x463b2b795cd628bf4bea9e0e8437b072dad18513998abfb2d8b4ce952cc8ec3f. 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/68a01b5d-bc06-42e2-9727-210c897cd67d.json and https://artists.proofprofile.net/proofs/artist/68a01b5d-bc06-42e2-9727-210c897cd67d.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 0xf5407ad0d8fd9edaf913a261d1777977b33d45f1698a0880909e726092daedfa. 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/HKG732406728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd8ba33bb3dae36e47daa3477c6604d2cca25d00d9b6272dec47ee668ea9de8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CNF182310774.
金風玉露·夜語遲 (影視劇《很想很想你》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd747e79672c31abed4ce6da6c779d0d3a086401741ebad612c424d2cdc9ae29b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CNF182310741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d78de2355a16eb378e4c65934598f476a05022ad31d07cf917d97b894349156. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CNF182310817.
心上月 (劇場版) [影視劇《很想很想你》插曲]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c271a0b52907358223b1ac151f7dadc093ed8c940623d91e3f88491a1db6de. 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/CNF182310818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ceb7bb0f81e659d4781abc443f0b5cb5e0d57d02e02ce59f8f526b1b22a7ab. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CNF182310779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2f7a70261957bd5e7ccced968b841e29b1201f665250bd77bfe0102b4a0e52. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CNF182310819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370aadf552737b71f51bb4956ac52ad564838de48a7c44d0d30661dd1ed414b1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CNF182310820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1279eb40404ad1082e0c237c535dc71d60fc50f68a2889254cbba74215aacb85. 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/TWU712305142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32ab38182245f2f038f22b79e4a4961ae9dca429ebf1c1cfdf7dbe8cbc66e6d. 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/TWU712305143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2d244bfcf1d05ec8a7ecc7438c69e99dbb83864c883217b6087623442223b4. 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/TWU712305144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02bdf2c95332c4ff415d3e914927e897050378fd9f8a516c6ce993cee5970e5. 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/TWU712305145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9186f3f1e761b6576959b0ed6d15c5688651690cc13f98da381d6566cb0883ca. 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/TWU712305146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a1706c2107e0ba6e5530d594081e18fa8868e0ae729f724307290aca4d379e. 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/TWU712305147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d4ffd85d40377ccff21a42ded568765d3717a17dd3532cebec9bf0b5f20648d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:19:50Z), 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/TWU712305148.