1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec7c35624f960384bc2a5eadcf40ce1639a5297ab08a7523ad65c13bc2d8f88. 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/3761b194-4a6f-4873-8f7f-ae0df6e9574f.json and https://artists.proofprofile.net/proofs/artist/3761b194-4a6f-4873-8f7f-ae0df6e9574f.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 → block OTSBitcoinBlock must exist at that height 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa611ded4f2da15a2ea1a3e5b14775124c1d24c831ee6b4fbd93f35e24b739c3. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/TCJPQ2281088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c96c9460f8a1982671fa65f33d8443e72119730822b94c3b32502ef93a10286. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:11:03Z), 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/TCJPR2217839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58d37a679d7436423d67b3c38e76d8dedd4280e108c585d60f85eeea0991c53. 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/TCJPR2237283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5466bdbdce3c30663714b478743efc58eb08bde419ffea7da9da223ec1866aa4. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCJPR2261407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bd76de2b795baa9194cf69535614f53e4122fea1fa130276ce931ec7d989ba. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPR2287326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c98efc4613c3f6d2138bf66a0f0f2f0820b30d879808007c362ee27d7f7face. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPS2223930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d4161171d459a99eb0c2eb7afab477c55549360a98ca9d6074e95e2ccf8bb5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPS2287439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cc2daf1fd6573ef1170f8de704ec711d82ba28c06c5e144fb0cae00f70656c. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCJPT2228038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5418b6233618bdb36ec76591c62e944719d8cd34c1ac01dc9b16d5b1099c7e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPT2258610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a1c66379e616d8f46abaf4d209abdd744eaf8b786bb0a62b9be8f0047bea8b. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:42:16Z), 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/TCJPU2359093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432ee2fb0ab69ba73a3505323e79138215fdac6ceb8ca20b6e2bb1d4e6f9952f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:40:35Z), 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/TCJPU2380887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc104c91f5f2d4ff27b87861629a2cd54db0a2d59c6d5b0143ac0c48dd52590e. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCJPV2379019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e3cb1b7b0d1d55fcde2352f40ab1d514047fd11ebbbc28eff1228145792969. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:20:48Z), 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/TCJPW2335997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b51451f2a5a4d6175381ee3a2f5f415dda5ae8247e5711a1a6ffbdd043c3796. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPX2357052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbe5396756e63be173a50a50b312404b1dbfa6eb7a22ec78ff2d9091d39606e. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:01:46Z), 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/TCJPY2343354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7de230acef170b3137fc99a749cea6f7a04f976d1226f70cd453c4a49468d7. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/TCJPZ2497413.
君が死にたくなったら僕に電話して
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9757e7e09190b1c4110b34662c8e7fa3cdccf1804fdc13ae85d2bd0b3fb44b93. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCJPB2444302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4d51c1c97052fe8e37feb1d07bc15ec9e7af0d2c83916350077a84b3a3472e. 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/TCJPC2410281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c47144097801c3fcaed7ec808d40e7165335986be8ee050a6886ea399cc5e4. 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/TCJPH2505802.