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 0xfd59b5ebc293a8baaf4f2e1fa18cacf02ee77f5a4b9d694f3d2037f496e86e14. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/632e8781-c16d-421c-a078-20f81bd1371a.json and https://artists.proofprofile.net/proofs/artist/632e8781-c16d-421c-a078-20f81bd1371a.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 0xca4b89d5368ffaba54e576f33ba7ee4b708152fb6b5fb38ea74945f203dafb88. 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/HKE022234791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3649933a994a7eea4148ff44079868ff9e6514af6961911bc882c045f5feb686. 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/HKE022234792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c475fa7a6400064ec49a2607d7cc4a61ec56dd295be8e996b34c802dbb3f37. 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/HKE022234793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262d1f06b58d231a208d14c38995614ad9cd9e5d25ba06abcf2ce0389e128e09. 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/HKE022234794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31dbb8835cb82198b5dfab2d46b66fa3dbbed3df1cb2b8b54da8b19432cd71ee. 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/HKE022234795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425c674ddc3106b14a07dad6f32dfeeb0e83dcf181776495cee49e745e10e7b4. 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/HKE022234796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ac89ec8f4fac475c53d3c85b45c7de939900557532a703d4b36929066894e3. 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/HKE022234797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6058bd5f00cf8625dd4d67d608e01c94a33d0d7559f538526c68028a050cb3ba. 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/HKE022234798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda12eb72c28044f31d23b91ccfc0fb8d894e8fd14eabed8671a415a4e18f4453. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/HKE022234799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130d2ee9484c148ad0af48a8bc45e5c7c37d5efc4d8736e3d22062745ad9b74b. 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/HKE022234800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9139214174eb81a798286fbdda4d71d8d74d62030dec32a0bcadfcd5f59c77. 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/HKE022234801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc34c251d1bbe7c2db73cc4abd15ebfc6c0a5cd6fded8a42b29d82ac3311abf97. 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/HKE022234802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde18a14c569feef00af334e3ca7ec9e0a78591d38515934840e21e0072fe9b24. 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/HKE022234803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477ea70dee060713931b4b91289e7980ed8a62164d880698ab35a7b981333054. 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/HKE022234804.
夢想由你 (電視劇《暖暖, 請多指教》插曲)
最好的幸運 (電視劇《暖暖, 請多指教》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd685e38cf7131eaca9852faa593c2d40fe165b484fda2f1ff20ba9766fa5b406. 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/TWU712002246.
一首暖暖的 (電視劇《暖暖, 請多指教》片頭曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e2aadbf90ff2e7d21220b289b295225487f60591283a8741ade299c7c76d6c. 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/TWU712002291.
要替我幸福 (電視劇《暖暖, 請多指教》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6de0f0578553bd4c2915ba192206b8531e39ba3076dc4b45891839655d8a09e. 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/TWU712002301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c174f07ad392ee102e262bb8b1acd0a306c242a1b2d5f6a436bd7cc69823786. 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/HKG731591303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0107027e5c4fd665849700509e827765ae1311ce1ef49ec8119802a38f5861a3. 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/HKG731591332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979d1d126068116b9abe676c3b7cf39f70f3af930e30418c13e0b1c5cdc15269. 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/HKG731591279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb7609b465eda31154bdaf1af589c1509ee8e0536f635732968ec5a017f5193. 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/HKG731591282.
魚與天空的午夜對白 (電視劇《拜託請你愛我》主題曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cffe5606bb0649c060d75524d6ae8a980b75190d3a727bebb4bbc571f548756. 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/TWU711905692.
影子天空 電視劇《親愛的設計師》插曲