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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05acc59c99d56d6098403088a678a4d4a8c6fecf457306db2aa7167135dbfaba. 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/fc6e7f44-798b-4b7e-92a9-be4be66503fe.json and https://artists.proofprofile.net/proofs/artist/fc6e7f44-798b-4b7e-92a9-be4be66503fe.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
トウキョウ・シャンディ・ランデヴ
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5058553a688e1581a778eef7f8770bca36b4bc2af0814b3b7362fadb30789b. 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/JPU902203510.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5058553a688e1581a778eef7f8770bca36b4bc2af0814b3b7362fadb30789b. 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/JPU902203510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07d8d877f263f3b3082ee0ee11eb333517c93f1262007fac7fa6d1ba4a5a985d. 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/JPB602194021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eaa3245474562d97b1192042c0a55f17f1413d026876f7d255b01a4e683e620. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPY392200476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04bbddd41f9c146cfebd93aebb6dc6586c0c6a7dc13b4df6aeac4e5305f09d0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPY392301153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51816910010617675ecc6bd68f86ab75b97db82b3655ba8bd3b4c0124d4e83ad. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPB602170314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10e83118568e76a31a9b0e4515515e7ccf4a378bc39e5caef2f5b766b0f8056. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPY392301156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f053442fa34bbeff287b17e0ed848cd28c5019849c3b63968d70b2b1f42ef3b. 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/JPY392100294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba9edd117b07e87e4e1a23c7963f7cf1f1d75bfbe1a1a0a8b80ecbe8b72c9a7. 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/JPY392100263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda7026a58a54deceff19458f4d2e4a9022c659ccff3574596785587f06ad1345. 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/JPY392200549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ca7e947d4e43649d97a58be69d60114db9f0fcc74a32d8213efd73808c31bf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPY392301159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fa3caa647d611d398ec5e68cae540e7f5089a01cce4142355541fc5c04c417. 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/JPY392301157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cf540459d09ea5b71e7b7a3a3f6a68686f35eb0a3eac1d02a7dd8c3e18e856. 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/JPY392301155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd803b7da94b1afef419335bfc2798ea46393a99dda1cd426b70d3e8ced7eec63. 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/JPY392301158.