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 0x5b1f1615ca4c642d0c999ef8ccb1eb7c61fd609714a51df6575bc71a3fe2f1fa. 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/f813fd29-7d7b-4344-9d96-3df9e556826c.json and https://artists.proofprofile.net/proofs/artist/f813fd29-7d7b-4344-9d96-3df9e556826c.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 0x0aa34faad9c2d4de198be123c336699b7f5ff3cd9bb394c332b004fcbfcfe7b6. 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/QZWFL2368444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6932e02917fa115ca383dc9b418ecdd7cc29eed91157332a07cd0224ecd0f8. 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/QZWFL2368445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d38d4589ee5e399ea4558014bcad76f420ff24ad5959effe5506ccc4e8139e9. 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/QZWFL2368446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8a0937a1ead55562a39b4ec8c44e518f9d42c2327f8d0fd7f34bdf76b3ea635. 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/QZWFL2368451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5402e1a93e3d232b5c3b6a91c30014ace9fe64e6378cf5fef935fb8c322c037. 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/QZWFL2368453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc20ad6af49234db1d7d0dd8059aae81b48cd6bb15a2096ed79f3e7c8aecbdc0. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZWFL2368448.
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 0x3557484cbaef7dda5a9982ee699662af97d04e70b00363b64eb1aaf5cac7e036. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/QZWFL2368449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fda7844f47f7dcd41622353c15076083c0fcc8540440906bfd3984343b9e481. 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/QZTB82238504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9ec68da1eef3a4f28b2e1b9d6252d2888557e06fff6a9e9838521f12491d1a. 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/QZTB82238505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ee399b51e1918a3529ac57fe9e2c4f07b9c8e4ffe15eef98fb11f6b6716efa. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/QZTB82238512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd9a8a9d6b7dd4eee2bc6268652f0abe5fa6679e908032654978355c11a682e. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QZTB82238508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f13a8dce4098e38c0088292da2b4dcda349e961d103f0431d82548107370435. 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/QZMEN2119839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b50835b374752975a4408708903c050e11c4bb08dbdc56b55fa66367148772. 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/QZMEN2119845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9b19fb671e106c1c767bbf50e737722cc0a0a4b529573b6e4fccdb906093c0. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/QZMEN2119838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b33604e9b420a2b975cf3b502bd2a1f3df0e7a249c4c3139baced42b3a1f0c1. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/QZMEN2119850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0151d225c47dad83bba7a04e22123ea12b40012138a5ef6590e41f884af52ab7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/TCACR1693909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21bccc87bd89e87390105be2ba927a10791f37c5a3e9790cd3125cf56a0c1e1c. 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/TCACP1669937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402fc65c3a4c8a2ec754b5f2b568856f73419c1807fba4daafe52856af889e1b. 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/TCACP1669976.
Its Ya Birthday (feat. Cascio, DJ Frosty & Chad B)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903a8c1dfc0f37605b08091cbe56c8be5abe3a70b85bfbc4158ea438f664a620. 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/TCACP1670286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b384edede5089d05dad4eb27c3ecad6426058326064b19ea66cf6240e28875. 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/TCACR1693885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830859c30f2b31e3acc3d66ca4956e897094fc33304017185dc6e29ba1b03d67. 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/TCACP1669919.
Lot for a Little (feat. Cascio & Chad B)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe2efc226d016d7f24f0928754c1cb254cf8fbaef1672c765465a97f9d4ef0c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/TCACP1670294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76da2aa175f6b916cb9aef965cf1517874a32aefa36289ffd4dd7560d96fe81d. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TCACP1669933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449e151fbedf368201be96798b2f956b329c86be2bf5457a88d097a2af7b8aa1. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/TCACP1670467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9041c694b639b10873421a67e1547c5b158afeb301fc1213983bdf717da6f95f. 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/QZHNA2333882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f67cdb077ce3e4f2df8008d5ae6bb35bf88151493d4047a19aecd69d99db314. 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/QZPLS2244074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22609ff92e4726281250e7c9174dd7d1e6a15f751e69eaf0494d6c443786250d. 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/QZNWW2221987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c34ea63886653842471dd80661385ec75b2b67eaf307237d30c7b3ba5ea25fb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZES62285649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f0e86b53d6d0fc7c85280e8f95731061e9f47576548161c0f50ab86ae20e46. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZES91900285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ce50250284849932ad71f7a663c316e961fcb005ee452f9113bebce98e2ba7. 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/QZES91915726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a29ee6b64109b3796166e917e6381e4e4a548ff9c817254ff8200c31c3864b. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QZDA41913710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d82033d4f5abbd8acb405831cafaa0b7c5d651a540cc1b58c8a1cdfe5f7d18. 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/GBKPL1821090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707cfcc33ee8bb6bd6b2909fcea5a8b06567954528d77d15816d4d27d40c8354. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM81810239.