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 0xb28e79e14f41eece8a03483e6218d50bc409a2dfd589eb6087d925e7b2afa471. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/417ca9f9-51a8-45bf-a44e-27029f21f5af.json and https://artists.proofprofile.net/proofs/artist/417ca9f9-51a8-45bf-a44e-27029f21f5af.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 0x6f55b034ac5169922ffa2b55fd1290e5ea4346cab1302b647472c897409e4ab9. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ARIXB2207067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c2eba4b531d89ed402c4e58d9ae6aa640bb147290df1ab31c629d933b2cc3f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ARIXB2201931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9de58e391ba6540f1194ab5e5193e9d5d56dd266d2de0a8d20d9abeb550102d. 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/ARIXB2207069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362eb1d19062cdcb2688df1d3c30e9da720ec6c17b45b5780e240265ecc60fd2. 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/ARIXB2207071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21f1c470c444dce1f2b8b7528c79b9d958cfc22b5e078bca141f4898611cab6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX201755677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7877cfae9c326f6d1e872a8d9fe51709c6c71bb9ce164d9ea8de63876b0486. 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/FRX201779712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a528772dde5cff70be5588e9dd8002eb104073a3624b32f5e454860152be1e. 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/FRX201779715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79156a837d242d496b02754455876b328ea82346f12b60295c216bc8c86402d0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX201779720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5695813ee5b2495fe034550a444e2ab5328aad04dee795acb65a960769ab68. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX201779721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa089d1e0f4382703e6d82a0433d69cc2dd3492e941cd8f68a3ebef0ba2efa646. 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/FRX201779722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79d6572dcf53b263849f8b9f4a20c6df763197806b621a4b6b419c22b651211. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ARIXB2401271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2377da62d82b518b5ae17d2b9ca8c3690967d7721fa4d521db8ac7c1fd84bfa7. 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/FR2X41529289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa92fcd791349c71e69bf312c79e90a0eebefb20aedd02506ec8617e2ffcede. 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/FR10S1698183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f55b034ac5169922ffa2b55fd1290e5ea4346cab1302b647472c897409e4ab9. 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/ARIXB2207067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd6656499134cad803d63c015a9fc949c52a80876cce05acebc927d1ee01bf4b. 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/ARIXB2207068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c2eba4b531d89ed402c4e58d9ae6aa640bb147290df1ab31c629d933b2cc3f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ARIXB2201931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9de58e391ba6540f1194ab5e5193e9d5d56dd266d2de0a8d20d9abeb550102d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ARIXB2207069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b688930181bf77acbcb47d634636ae23cd0414b56afa348b26e16885ee71ba. 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/ARIXB2205962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a570c89369f88f9a7123c475e5c243d5294b5fef129fb2a87568b9737886dc9. 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/ARIXB2207070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362eb1d19062cdcb2688df1d3c30e9da720ec6c17b45b5780e240265ecc60fd2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ARIXB2207071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffffef5a401a568e030555241e9dd3175bfebaa84cc70e021a68ed2d40cdff30. 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/ARIXB2402597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83a6c73a915c247a32c779e47adde9527a3d4749f3a76c3dea23d5e7df90716. 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/ARIXB2402598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2377da62d82b518b5ae17d2b9ca8c3690967d7721fa4d521db8ac7c1fd84bfa7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR2X41529289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa92fcd791349c71e69bf312c79e90a0eebefb20aedd02506ec8617e2ffcede. 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/FR10S1698183.