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 0x1715a08797e4aa651f0c5daf07dde7ed50d2682f8a5e55f63efa21dc2bee945d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/618424c5-4a22-4573-af17-38e0a443e10e.json and https://artists.proofprofile.net/proofs/artist/618424c5-4a22-4573-af17-38e0a443e10e.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 0xa6af768a21f2e0cbbc8ed8a8c77aca4d25639cc1c9ba1f1f913861052090fc25. 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/TWAE32200348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29e21cc3c66958aa095b7254feaca849c5300a464e6f61c170713a1fa4abd77. 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/TWAE32200349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeab25c2bf631fa1dc41f03b3d74cd0cdc9e35bdef09544115a7a3bc5865e074. 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/TWAE32200351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2511919711b98928c3746dc6f79e98fbdc50e59843c89eaf340507caf0158709. 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/TWAE32000899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db73d0a63ebc45c05ae61fc52994ce069fffec5d240c56454d73830d60292b9. 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/TWAE32000900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef549c1e2d6348e1991eeafea7c6448a054f6cc417a2075e4b30bccf6af148f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:24:14Z), 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/TWAE32000901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f3c64b8a2604b2b7bea43715a69ec47a479872b10de6a7d808f792323064eb9. 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/TWAE32000904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e8d21828bec0146dc2b3eb62b254f9c996121423a0e96e8d5cea92921640b3. 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/TWAE32000902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5616ac4bed5c7abeaeb41cd652180289aaeeb132024d449846855ab98dc2c4. 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/TWAE32000903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1a6b0998aff0ff6d28ce3fcdb48b01a3a8409d1472b4a17ec8e4bc6cab7e53. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/TWA472419024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe95a74351312fbc4c6aad1c3e6248682b1732db298a9d8c58e00210ad65268. 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/TWAE32302295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140ba06fb66a5e116afdbd80a4f522e59960a223be20059772475893fb3bae57. 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/TWAE32302296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678ab69c57e97866fcc74fd83ae160418063946e57777decf0e5bc9e57be050a. 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/TWAE32302298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37def25128ff005a804a7b8b211420cac53e9b38f8c214555032e44e7fe9069a. 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/TWAE32302299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83f2df12a429921504f7cec121a1d4ab0d826c423d20cd35411dd57d7b0e515. 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/TWAE32302300.
傷痕 - 滾石40 滾石撞樂隊 40團拚經典 (原唱:林憶蓮)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde61228aba4015b5e382a3a187ba04ca02e7b18013cb33fe0259971149f0312c. 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/TWA452100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33af71c01382e87e9d6debcfdf36c1bb77e9e14632041a225ba780a641b8bd72. 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/TWAE31902004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf3f3d845e96bada77bcc4090ffbdb43051032ba0b6c1f35ecbc498913acdfb. 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/TWAE31901117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0421e2f111a6651ac214089a12a462f108cc4f7f6338fe248c153f0cefb6d0ba. 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/TWAE31901118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806186769aa4dd24234182db25a15c9adc858351ea8b2c1876bd17a06a5e68c2. 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/TWAE31901119.