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 0xa043dae4686ef5cba34bc9f75f4f00f53e2b32fbb7f0649e9927a647021be8f2. 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/7034ab90-2d3e-4ba2-9e38-4ea60a53da61.json and https://artists.proofprofile.net/proofs/artist/7034ab90-2d3e-4ba2-9e38-4ea60a53da61.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 0x3180ac97b73167b3f4c1861fef70941eb6b235a3b9cce15062df09013463e82a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/JP92N2403012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec96630e4b2c6f9385b1c4e5c310f4f2990e7d3d4f820c8ead64128abe062495. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/TCJPA2439105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f3812279ef4f4e8820272713174142c7c645a29a9396a1c1ecd17bb8a086eb. 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/TCJPB2484809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34358632a0e4cf3833c97ca4c8ddeddeca3250ba10b08e5406ae0d22f1488cba. 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/TCJPC2405261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x749771b6567c7ed0cdbcbee6c90ff496077039aec9a4b08d261c86a727ebd187. 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/TCJPB2499613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79aa1aae4ff55d8c87cfb0c369343c608251b74774ffc7a699f3c90b01f15c21. 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/TCJPB2484833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a87fb630a62b7f00b2175b06f795bf1220815c5d24ef0fcbfa695ba1c4234a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/TCJPB2484844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd240024e169a0fa919f9afc0c1d9f7a9659fdedfd66b815f6f75042db7de5a. 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/TCJPB2484847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f3812279ef4f4e8820272713174142c7c645a29a9396a1c1ecd17bb8a086eb. 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/TCJPB2484809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79aa1aae4ff55d8c87cfb0c369343c608251b74774ffc7a699f3c90b01f15c21. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPB2484833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd240024e169a0fa919f9afc0c1d9f7a9659fdedfd66b815f6f75042db7de5a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCJPB2484847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf7a2383a0a6c5b0182224741c1a08ef2a2cd4d1d3053323100ce96640e24e0. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCJPD2544418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6848a4b8ffbdf79cb7d8df2531dffce68a6341229c8b68230080d7927c0e23a1. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/TCJPD2590057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f34d458d590c81de8cd3c254ba51b8a8264162c2a7d4c9e06ad30e7ea0da70. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/TCJPG2538315.
ryousangatasyougaisyaonnna (feat. imaizumiyui)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cea138e6b3da7ef52726c16fb3670e0e6b70b72be540e20f67284b0bd8d212f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCJPG2548186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de82406e7355e47950db0c2f74ccac9e634068421bf3abcb801809b3400f5dd. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/JP92N2521100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bab1f1529143e805e7202034909594483d930fb352494c4add6daa1ad571942. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/TCJPJ2515660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ccd18d725cad7353b82a9113f15417ba9948116e28537dc742168ffa2aeb2b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT66J2557008.