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 0x60db8daf61b474784ceacd8f500544689dc882730177b7d63ee82e92a1c98f10. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/00656284-3ba8-4712-b8b9-c9bbb7237433.json and https://artists.proofprofile.net/proofs/artist/00656284-3ba8-4712-b8b9-c9bbb7237433.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fc0029dc90eac388c4459f63f7042ed0c2f6f8f28ac110cb4de74af2106d6e. 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/JPE501900094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23abd3b597c3d213998d7d525c80af072d852e031a6c4bab44ff92ce1315a328. 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/JPE502000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a9b05f9cb554d8632c4298a6abcefc3ab32d6ea15b0b6897cc7902aa266588. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/JPE502000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060bdd21164143b13935b5191486fb78df6cbd6dfe431d538d95831274326025. 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/JPTF02219801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0866418cd5b7320710de6a4d15c95c02506aee4fa050cf0aa1c863699434879e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPTF02217401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060bdd21164143b13935b5191486fb78df6cbd6dfe431d538d95831274326025. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPTF02219801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3d46d40cb8ddbbf20e95e6a4ae2cefdc7c800d7e79cf5a2811293a9bd3bea0e. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/JPTF02227601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fe47a7acda4845812efaff0292e413c8f9b9e2fa1d41bff130dd86b8133627. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/JPTF02229401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad1e053a6c1bf0144a306b4bd2ab80031121fe3d71affe6c7ae993bb6335be1. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/JPTF02312601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da1e372d6d55715ad047a7d0858b7ba54d1f5f7c6fad06f7d8f5a47e05b1837. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:27:13Z), 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/JPTF02316001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060bdd21164143b13935b5191486fb78df6cbd6dfe431d538d95831274326025. 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/JPTF02219801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10fe47a7acda4845812efaff0292e413c8f9b9e2fa1d41bff130dd86b8133627. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/JPTF02229401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27951e1192fa150eb44e44d6fcd425b13f8f6fe3ad631c9b4ada6360fed05c6b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPTF02316004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a5f992986d4249d8e5adee5baed43d527738f218f15ca71ead78f46a8004f1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:43:16Z), 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/JPTF02120803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5a0380562be8069c5608da38466cf279bfbdb948bb0e8d9de749330705ef82. 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/JPE502400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290298edd6a70261a98f0ef71958a5095ba7471ce0af06797c0ef32e9235b6fe. 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/JPE502400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd1576e7edaea0870e688d9acd7c4623a4eb84cd7a8251c0fbf8ec6c73c51c3. 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/JPE502400044.