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 0x3d1eb8a5b3b57e4e3664ac1f66f99aa1157b9378c26439141312425ca82dabed. 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/fcf5a5e0-9b9c-4790-9d35-01f532d29232.json and https://artists.proofprofile.net/proofs/artist/fcf5a5e0-9b9c-4790-9d35-01f532d29232.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 0x8e695b13d9409737d7ae1d81f898907a0413aed3072add4dcbb026730c8c4a21. 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/TWU712201731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea2ee02c7582db3228e3e6f14f6496bff4046175d2bdc652fc32417172ddeb1. 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/TWU712201732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41562fda7f05d85d73092cf6e63a8509903e4b4d3d97894392cbd1631ac5fbdb. 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/TWU712201733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74313a065c0223c99aea3606db6e60aad242a7ebbac083fabf8227181acf91c3. 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/TWU712201734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267ade6ad9c64a5b01cc1af9df624946ae78c0265541df4f66799ccb8c9faaca. 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/TWU712201735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83069f8f5c774a0c3b37be39fdeccf7eb20541f0ea97f4f73a6ecb8c7cc0087. 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/TWU712201736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976d02b34e692aebc6f50a215d106e1764a8c65dbe0b9e5db5220b9b2d454aa3. 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/TWU712201737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578982a6cf805bcdb984c9993165cb1b74ee6ec5da81a78680dfa85b29287ca8. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/TWU712201738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1a4bbbf86da6114ed11af0ed0e3ecf627e93c09b945f7c8bd77178a8819aee. 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/HKG732450893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54718878fa28cd6b7c76799155a2e40f1e4e833f0295e1dd23602072c0802e3a. 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/HKG732407432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc4dca03635263aebec34b285040e1483b1b6726bbb0e80075b0eee06cc6227a. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/HKG732412172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612f2a3da4682b93c8c16f30af8624cc8c855f45afb05a80344598ad540a6f21. 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/HKG731603272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab68c36c9b2756427a76d4a3f8f81d06c855256a1b0cb0352825d277e24ba473. 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/HKG731633664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab66a6fc6cb5f03f602640b3bc6cbe056a6f048f578430daeedb65e8dbec1d6d. 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/HKG732382618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299153effbce33b99a5cfef138b7891a7f5cead74dad6fb171fce3d0ac2a048e. 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/HKG731713339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80913398de076088e3bcd70f224b06e134b29ce2c6248093033a5beb83e7d639. 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/HKG732348364.
晚风告白(说唱先锋「星球漂移」说唱音乐企划) [说唱版]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715fe0a591278b9e6b4eb8c94ac9a5dd95bdeed613113279793081a532c2ebfd. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/FRX762343657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa667d1f74442be91d8a391ac5c547d72539170b13ced85fbe42ff6277a79de3b. 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/HKG732332403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89c589ba004ee897bed60b1381c4f81f90035d3fc9b2b37f8b765cd2a48d9f4. 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/HKG732325575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5310db37d9d8db245cea908e68cb2105d87861ba8de32d020b4d9132f27228a. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/HKG732300199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cf03dece54f575632c3d0c655b5426f7a5b5b13fe2277aa76771430267977c. 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/SE57V2338201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c41a09751e58c1354564f396e4d194ead27edbc51e2596fea02e366cb3bcb0. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/HKG731600138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a96bba9bd7741a682c7ef2c14086ac52ecb9e6419a1b93c46c1684ee6f44c80. 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/HKG731600102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa3ee97808d984720ea6304067394153aa043b6f8553bd3de5d9f40ebf9fa04. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/HKG732328192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5afc3450f7302f326f7795d74b97a950ce803d83fc1b88084bb9205fdb56380. 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/HKJ962012612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5781d688188f82e565f016b8f7975e9ec08062af50c79cd2e37d7c16d1f6cb. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/HKG732224928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e4221ce254357d27df0b121e04a2f34ea52e6ef897aae8691f46f4e467a4fb. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/HKG732313490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796c3b3fc2a3095584ef64314e02fbdcc64e5a17c5ac40c03985f9ff5a94ae38. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/HKG732149001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9feb01c7fb4c8dacd093d3284f3f8b270d87d96ba9c59948aa14290e96ac36. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/HKG731713344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100f54fd80a19ae6d64897bfda2733f2ea6d9337260d7bfe56d79fb796395802. 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/FRX452145536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f77a09f5b5b48c67a7f02533c15812f56c00c928007e0fa3c546b85bbdfe5a. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FRX452145537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5af9d900517b9649cdd498fdb0d03bdcf8b4236f865dcc3f5c8f57e06bbcb1e. 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/HKG732132958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2eed1c5da33216712739fc6f84642a6e132829d4d6ec4cbb6092fd84b7f83dc. 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/FR59R2165548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7315c0597c2bdf11d9842f0ca268ba684005cd02745fdfb0012a5b2cf1a1a76f. 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/FR59R2165549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58915146458fbbb77dc653b5a8924567c654261671182a9117c5778d38384a3c. 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/TWU712201770.
只想和你在一起 (電視劇《我的愛與星辰》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ccec5a0538d27bd6fdfede72aa36e6e540ea06f3aeae6285a22d39d99c70d2. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/TWU712201771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af3c689ff675e0bbb43c3ba8eeeb0b1d356d1e9cbd447041b5808583f38eea5. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/TWU712201772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9624bdb71b7f14040d6de4ae535f79b5268ebfca87c487b7fbeb6aa6ccacbd42. 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/HKG732007683.