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 0x4c284842e72c32af198dcdbd25975e57dfed7b3b4f0c99b505bfe5a1e90b071d. 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/c043887e-a94b-4748-9a8d-151b7ceb3436.json and https://artists.proofprofile.net/proofs/artist/c043887e-a94b-4748-9a8d-151b7ceb3436.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 0xdfa38c19ad500e8a43fd8e5a62f2c5c3a81796d9eff68f920dea3c6391f4bbf5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/HKG732281588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6dc65e6cfdf96a65414b7f7b5400665a408cadd183ea05c6ffe065f1edb588. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKG732281589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a091cb0e18ecf2b630b9bdebcc1eaa7028f8c4acb3381ebfe482b51b5f4458f. 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/HKG732281591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565e291432c9fc7ebbf036678ad5ca7b62c23b52b730c1afc51b8090286c5820. 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/HKG732281592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f49047a14743de9069b9a8504ea26a6c4b4541c4da67cec0003c6de69ea3733. 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/HKG732281594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89078bd8e2af9ac3b6addc84f8d3a234b45aaf72e7cbb35a7daf5bd255239794. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKG732278699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cfbba7dbb7e6a75ae7321663290b53ae2e7e3cc5ea9228151709c02c6413221. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/HKG732281518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9833a5ea79deeca7418a376f9c2abdb0bc1e34cbc70c89d6bbe7d2924cae702. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/HKG732281519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e43acf9ac69da8a3eabbefeab2e034d516ce2d59b49913ed85a6a9ded794422. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/HKG732281522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ebd3d95b722f19508d58f94f78b607fbec8ed85d27a742a38a110aa0457dd1. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/TWCT51717754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1906f0470a5864409456932b08195dfd44fb5c384ad6545ab716548c19349379. 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/TWCT51717755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9883beed7c9fc47984d0b3a2e85d8cd78b82f9f007bd2b70dbde4017ed6d5ef6. Chain 2 (Bitcoin): anchored in block 960161 (2026-07-29T22:51:26Z), 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/TWCT51717756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e23178ac3e7ee583cac351bfb7fb70957b26e46f32fa66d8803aac9a7874202. 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/TWCT51717757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c747324d7ab64680f42f5e50f40c90d925927eebd930977bb38be2d4f31c855. 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/TWCT51717758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e6db1daac0f3dd07e0dcebce008dc94b3561b4cf6c260701fc52ee4666ab8e. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/TWCT51717759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11f64b9d8c9d69fc070de65d202a8ef81a8ad961330cb14094a5ea0e0e08b26c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/TWCT51717760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbaf58156376851a3316f47f8c9d8cf071ca9682682d56b6e82748b3bb9e5917. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/TWCT51717761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfb3b422a22f4a061113a52b5c3902e7269c73a6cc6d0cfc08ef3b1968d47eb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TWCT51717762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e40da46d3d959346762ee0fcd7c0ef0a66d5ebe2e71ebae48c0dfdfac986a5. 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/TWCT51717763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7273ec567422038a0739f1fdd6b45b98adc588bbe79daf64e4004cd3fc6432cf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TWCT52435871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8907edada3561e8bb4e7e82730ad5de39988eada63a86bed1fdd1ac0549368. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/TWCT52326040.
哈囉(三立華劇《三隻小豬的逆襲》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd819e93deafded5b0d24a545ad60ea276c2872bfd5c788dd004375074c75e3c2. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/TWCT52104454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589d34ab0a721d241ade29f9d0436be335f9dc6e0a585d7019fb6a8e632026c7. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/TWCT52003207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9abfc19d7cbed0a770af847fe2b172def15a314871537b5fe5a01d79e9ea13. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TWCT52001790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803b29ca2e815833d68717e85449598c3f3ca76b7ff0bc3c91ceab61686c5792. 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/TWCT52000434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaa67e7283668fa6c0bd951cc8cbb99b8af3c0dd2feb782551308c652fc100d. 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/TWCT51720703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a47e41da3a40baa8c4cf3ee697e21ad886a1c18e47afb5749c98bcbdab2b6b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TWCT51710350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbaa716c6e51d77441577b6bab233e874a6ea13e0c59a39e21ad489dc2eb036. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/TWCT51710352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbac377d2cb91d8df7c9dff52add65e6926e23d6c97e232c848e3e513fbd474. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TWCT51710353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21158099749a0b7955e5a20d26e5ee06a12887800ea08f3b6a68116fc53915b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLRD51738271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe38e5d4c646593a1f58d1d15300b158191a1775da2c5f4fb3a401928e6b82788. 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/TWP011634001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaaf0114c3eafcaf8a08a8d9efa44503fbd7223a63de68c79d341ab643d89002. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TWP011634002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ce00ab9e9a272cb886f45503a00f211bf5093c0d3ab45a2427607ab1fe8ebd. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/TWP011634003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91650df31a29b64130fcbf2a73703fa4adaf1bbb97b101973ba0f54e6fe44f05. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/TWP011634004.