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 0xd6bf0cd956585ed09f34f67d0685e366314d4848e8e18cccb65d190a9a440bcc. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb343b45-50d0-47a9-90bc-0e8962e7b010.json and https://artists.proofprofile.net/proofs/artist/bb343b45-50d0-47a9-90bc-0e8962e7b010.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 0x5be11baeabbfcdfd183d32c3952912d503b9b0a6e85102dd13a5531a2b64e740. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZW9N2250696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d62957c59d913646074ccc5449401b5abc4d52eca04ac517628998383f7694. 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/UKZGC2307731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dbf4cc6cc0934f46e355c8e5bf1e4635a61f885cd376e899a75cd379f2cc87. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/UKZGC2306933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295fdfff5172af42e7f3183b718be7d3778936f08112da2c3c920461e87172a7. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/UKZGC2306936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c738736587a804a12fd7a4e9a6cbd86ae5d7f3bd37ca641df50b67dc09e043. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UKZGC2404873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a23931fb2ad699a3495d53df0a5073a8f3524ff55b393357f6fc4abf9a94ef9. 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/UKZGC2403448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424d7e10c43c364620f34496378d3102f90fbf1b68887e5faac66d3fe71c20b1. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/UKZGC2400619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232b7b016c1b8a1d17e416a21810754a3567d20b98eeddc4e4ac50967071018d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UKZGC2501518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd12b0a2a0f7af37949e9e9729e75b8f3ad0c7b4d2b9d40b588734e0895fe842. 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/UKZGC2407429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c167211442e6e74e6baf491ebaaa7245e6e52946031fbf4a79552b676d5ae8c. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/UKZGC2504750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75e5c02db8378ef54b4e82e5734afbda92a4aaf58fccb6d76709cc6e60c465fb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UKZGC2504751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea14f0a1e2a034ff5356a12bc123b3be8573782e8576518fe1696c990a8a8d2. 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/UKZGC2503226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3fe6356496cc73beafbbf237fc2270ff11470e8b40d494b7c72877b0085c90. 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/UKZGC2500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232b7b016c1b8a1d17e416a21810754a3567d20b98eeddc4e4ac50967071018d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/UKZGC2501518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284e580a159a81e84b0665a7385275d2480cb881a66bbdb8694e929ca94eb42c. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:41:45Z), 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/UKZGC2504752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21fae46dc2c6ef91d387c0423f432388007c88073a155b09066b42390f25dcf. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/UKZGC2504753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059b6453c92c527abe407c5888bf4f690c73b58d6b3e3e586518e68d9ed914c9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:02:44Z), 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/UKZGC2507490.