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 0x0316cff13209d77168c18a0349e87be52fe13b81369de06d2bc6a64f8e51a973. 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/b79a074f-49cb-4438-80e5-0ff94b27920c.json and https://artists.proofprofile.net/proofs/artist/b79a074f-49cb-4438-80e5-0ff94b27920c.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 0x9e39920ca11c0773069d88979713ec50a05567b87bab50c6eddca011f1c092b6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CNZ632200626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e919f0af213a01ddcba7f1578c37648b24b041ecd4b2b8bd443d15cd2ef373. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/CNZ632200880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed7100b4fcf9c03ba87c9b93ecd78346aaf7a27bc7cd29018a7bc0e97cb09da3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TWCT52208574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c89f2acff40b6a61781bf83c391f76ac879cfd20f60dcf851c21043107bac57. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CNZ632201342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e919f0af213a01ddcba7f1578c37648b24b041ecd4b2b8bd443d15cd2ef373. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CNZ632200880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb5580ec2b6fff5f3162a19afa0def7a66cdbb075466062a071a16f2bc07b69. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/CNZ632201514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf020909c436425c68860c8e378aa2d1f7aeb891d0df5968cd401fe97d86ca2de. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/CNZ632300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3860fba5be6545e839dd603b2e5c2a872e7e9b40c1292687e5c68cc883769a0e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FRX762384489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41062d10c702a6417d40a02e89286b502ebe6a0fc89e2141f01cb6b2549d57e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/HKA412300384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6155d2d605fb3ad647d0b7a7d3b67e36b7e5bc819c50ab63d9b365034dfdaa04. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/CNZ632301415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6b3e83b4d5d9b133e0abf438d33bcea96758379dac005c6644c6f66da4d893. 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/CNZ632400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41062d10c702a6417d40a02e89286b502ebe6a0fc89e2141f01cb6b2549d57e. 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/HKA412300384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d0d39e2c5fec53fc7439305ede32c134d56f4fb3fab3826315d3b14acb0cc1. 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/CNZ632300989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98528da18a749c05b50435a9095bf5e3be2c4271312c06082f83d2ba7e8b095e. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/CNZ632400602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fdb4283fae1e70f47fddd18843e8f0b063c7e3e349faa452d3be245acd1943. 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/CNZ632400594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6b3e83b4d5d9b133e0abf438d33bcea96758379dac005c6644c6f66da4d893. 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/CNZ632400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7d1bead453e6eea693517e42ab7191b8aadb2648681720a5f0fde74332e188. 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/CNZ632400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c8ff72abd42e687a628f0014403698fe01129ca1901de51154b7cfabe04d03. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/CNZ632400604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4792fd92c3c9ad6dcf5e09ad9768cfefb14075ca33c7c642b00d5219972722. 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/CNZ632400595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626ec80776e4c7a153d18de5a738fe8f7ab38d9fc0713af3e105718e388ed264. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/CNZ632401618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2862ec29af908da4fec0384f3a2d24887d35000f5292aeac4a849a5228fe276. 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/HKG732105035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0572ff0cb0eac3c5274a44c1ccbe703a40dfe36fa9fce03c244e332e9e2ff84. 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/HKG732152859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf077c72b7eff4bf1ac45eb6fc813f2d11e5a25af08306b0c7b405a1fa7dd9b49. 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/HKG732141741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3d7274b7c0bd86bf2efd360e03b96c18b7aa8a344525746232a2a27fe69de9. 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/HKG732126882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa711fdb962b46f7144cf63ae5afaff5f6be16ee1f7da2fc4d3455dfb8b64cc61. 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/HKG732105028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a248caba8450d72df400c14788ed1068248c07933a05b3d43c30edeb4e590eb. 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/HKG732141700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe234827782843de1f9b7465c1e1ea04c8c43b84765e3ea79a9f176b1ff54dc2f. 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/HKG732152860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743153cd3e8a66a8b4649838c786339514c1bbafd9ce00e000a7d321f3110e9f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/HKG732126907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030860f0113a797e4e9e2ca46b7d90bb95c75d5eab00b34d70397b7544ae97a9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TWDK52305031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29b6ed58d7b06a2d7057cde1da37dc316f6cb28f38759c6b09ab2bb4045b5c9. 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/HKG732126875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca329d35ee39712750004fb91565a412139bbf8e628383a9b34f5b8f0e58d43. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/HKG732126891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d6dc9217beb3d5c500c5e329baa8000913b1ce60211d47b15e0fd20b254353. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/HKG732126900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4a849d7a1879fca46be6a9c27983bc6e72d1c26257f31cd10a28a82e7fa707. 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/HKG732126903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bd75d9fbb63824e89007f7df8ca3267fc71f150de4eea49421cf50f1ba1547. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/HKG732141732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4079705b2fe5f3736e6f75662868ca769c379f776ff7a48dd5bbdb873151e2. 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/HKG732141716.
我猜你也心動 (影視劇《我的反派男友》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7bf91a2c8a5bf60323f33bfe326f385a59ba28b15c2e29a2af3e59fd82d7ac. 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/CNZ842200465.
我猜你也心動 (影視劇《我的反派男友》插曲) [伴奏版]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e2baeec6cfb40c314aec1ccce4f7d8a18ae2e87011dcfb40bc11d57eee4efe. 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/CNZ842200470.