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 0xb0e065891e12216b71de825b50875667671374401e0002622d0b6bda506e5220. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39bdd5e4-7a77-4148-9022-72bc278e5249.json and https://artists.proofprofile.net/proofs/artist/39bdd5e4-7a77-4148-9022-72bc278e5249.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 0x872c60cfad2cede8916151c515c849dcb5fa31551410564d5eadd5ec05639d8f. 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/FRR642001758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd2936dd0d72ca89ad6b658dce9349c87168d9e1be01157403d847dc5b7bf92. 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/FRR642001759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc275f15b17e2969b9eb6e91d4a59eadd7f9c0c23a3b6d671457af6348735abe9. 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/FRR642001760.
A Woman I Don't Know - Le Wanderer Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d0dc12db90d5cc7dce1755a0157cdc5c21dfe6316118e25fd7e2677460ee6f. 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/FRR642001761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417e927d9d2b752e5b8bdfa5cb9e740c2e34b02aab1b67d9b71883508dc99d7d. 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/FRR642001762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c0a2c90e84329fc3ba2731dcb5d80a73e83c90415e748ff896958e7c7b6ef8. 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/FRR642001763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827d6c36201bce9cad54f2b8e823c717013f59e42225267e5e1604b9c1cf8402. 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/FRR642001765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e86d54dba7d50f9e3d8b84d1a1218c4aeddb1bad67df8efbbc0627cd97d317. 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/FRR642001757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872c60cfad2cede8916151c515c849dcb5fa31551410564d5eadd5ec05639d8f. 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/FRR642001758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc275f15b17e2969b9eb6e91d4a59eadd7f9c0c23a3b6d671457af6348735abe9. 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/FRR642001760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417e927d9d2b752e5b8bdfa5cb9e740c2e34b02aab1b67d9b71883508dc99d7d. 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/FRR642001762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2729b142568c0f422a4736af63d461bc1afdb9690db4e47f0f8b5cfe66b0a10c. 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/FRR642000380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827d6c36201bce9cad54f2b8e823c717013f59e42225267e5e1604b9c1cf8402. 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/FRR642001765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002917c4bcebf9eca9e5da0ac7feaa117ef9b83db355ddd37f069cba96a906b1. 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/FRR642201042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8919e85aa1c0e724a75936cc6bcc44a65d595b3baae8b672675e5ac36e9f2655. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FRR642201041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8f984fe92f01d7eaeadd2d6af683834ff326ee2b070b109341b6c798728ccf. 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/FRR642302249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8f984fe92f01d7eaeadd2d6af683834ff326ee2b070b109341b6c798728ccf. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRR642302249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe920f350a54cfdcb2e7ff04ff989ad83e410c370a139e2f0fa0bae647f548b25. 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/FRR642400581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57451e78c7fa7ddd2c404fc9bf86bf593a51a167d46ce763b135a66a9775f1b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRP621900340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418cdecc188a6db64dbac8931102ab3bab3d007e3f6b70a5e75e36e8dc8c14a5. 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/FRP621900370.
Technikart 05 - Le printemps c'est maintenant
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad87e69a11481c3b786215634dad62c049ddb947967df343c5a4265feacf444. 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/FR9W11161070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebbd815c390fc0f29e189b94fd9b6e3eaf1d97626688074a7cbc2258f4b65aa. 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/FRR642200198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22ba7644dbb738e19308191ca4afb487e49ec0412da69727545a29373dbed23. 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/FRR641700181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c11ee96cd10bc1406a4fd7f73db0d39f8596870d6eeb61a5f578c841027d162. 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/FRR641800260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f98c9989007c14700ba3bfd40cfab5b7227fcf24cbbab642ec1d981a8e1957. 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/FRPFO1800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119e5366805eb81a340ea36d307ede452c52765afdc70dcaf5d8a43dfc9a6308. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/FRR641800262.
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 0x5cd0dc7e468bcee8f540a275297ed76d4dab7302af2e725acfc293ad92851b50. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/FRPFO1800010.