Chapo ("Shorty") may refer to: Places Chapo Lake, in Chile People Surnames Daniel Chapo (born 1977), Mozambican President Pierre Chapo (1927–1987), French furniture designer Nicknames Chapo Ros
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e16b52b33a59fd7ef1df977618ea435074784e945c5cdf894f0464a1127ac63. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/593ac67f-ef3a-4b2c-97b4-aa8ddd71d95e.json and https://artists.proofprofile.net/proofs/artist/593ac67f-ef3a-4b2c-97b4-aa8ddd71d95e.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0a66d4dded97da38f1164a5f99cfce7c08d7888dd20254a31f06bc413de4ed. 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/USDS10600068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca89b4a3cbf8d73fe040e2e7a32b7e0ca3426a00c62bba95b9aea307d6368918. 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/USDS10812397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0661b6596066374ed6c501f3534348a822a5fbc0b58bdf94a7e34e75859670. 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/USDS10600066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4de2890b75c4d8e46637621544152625bb032864d45ace52011e5e66210c46. 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/USDS10812399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e592eead0b38a2a6c059c36b1917ca25fe93d929e25a632bd50a0f5686c53a0. 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/USDS10601232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf950d60e0b55890132bb33a2ff3a9d9ec3e5e1ea3c28eca969002a6389ac7165. 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/USDS10812398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8123685af6c4d9d08d2467f9cb686c1a3a956310090aee082dd2cae9c886fd. 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/USDS10600071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0392b4f4d3b32365d73eb0ba8fc10ac801a170f4ea521a84f67b078bfb5d1677. 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/USDS10812400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47907cc9bae81a2651c70e12b43423ea5679db1b48c8cd770c2c4bb519683a8b. 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/USDS10601222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bcf29585f7d13e45dd3363ad60cf4ab38d392697bfcf820a2803227829b6a7. 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/USDS10812403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49381b01da1ee306dd10b14f68a122e10d9c752eae98af942f442cddb3e7e31a. 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/USDS10710863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2e7355fc0a6d0128ea4438c91daa7ccf7ecc9b8aceaf3f12d1c6878258ecfa. 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/USUM70964563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8cc84086dd207947b4431c27c85981512428305e6315179221504e552ca60c6. 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/USDS10601226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54585630e24eb5b548ebab101a5c0a22e92691cda95c7664008d3e921fdea119. 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/USUM70964561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531001e5f402597d219d2297b2ef53ffb563738914599b2aa46ed218135dbd09. 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/USDS10710864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c73149478265fcfd755bae8baf115fb0dfab8517a2d7a30d21a447abebd049. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USUM70964574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b7fe9d6a6d0d2b8e11b4f4448b413ca866aeef0e536fa52753f0307775d300. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/USDS10600065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce882d9d3e0a5bf48f599077b224db877a4b24f903a82b3820c413ac0a6cfd81. 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/USUM71017534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02fb44a0619b2a11fed2ea83c5e73dc8a944e075ea8fbf632f1b9fc70efd29e. 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/USDS10601230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6286647ecaf0c4a890986ee9e8f1b665cb6a4668e9fcb60f722da1f9ebb5b37. 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/USUM71114650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0661b6596066374ed6c501f3534348a822a5fbc0b58bdf94a7e34e75859670. 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/USDS10600066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e592eead0b38a2a6c059c36b1917ca25fe93d929e25a632bd50a0f5686c53a0. 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/USDS10601232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8123685af6c4d9d08d2467f9cb686c1a3a956310090aee082dd2cae9c886fd. 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/USDS10600071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47907cc9bae81a2651c70e12b43423ea5679db1b48c8cd770c2c4bb519683a8b. 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/USDS10601222.