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 0x5ce3c584cc5be7a0fa12b6cefc29fd6c8a14c134ba08614cc985d89ab4d17639. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8dedd914-a18f-4229-97c1-b3dd602978fd.json and https://artists.proofprofile.net/proofs/artist/8dedd914-a18f-4229-97c1-b3dd602978fd.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 0x1b8e1808d054a57a233e24313a1af69afbd2ea18553cfc61afa29dd28dafc261. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DEH742318916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb53a175f1add426e555b6f7a97c8ee0f6c25f2f029d43b91d1c735e3279643e0. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEH742318917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bab139e1709c832292b721031b7195781a3ce3343b30b525cd7e7ea439d25cf. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEH742318918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045ed894596a50c4ac753aeb135f9ddaa5973694257f3b6f8ad9a58ce166342d. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/DEH742318919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8b4e918b03b02f833dc0f19d7180b7792c1e22eb09ef480d5bb6eaa7342206. 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/DEH742318920.
Dark Disko Mafioso - Marc DePulse Remix [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacc9f9aea864b359e09996f70d543d9aa58d58f7a32246bb2e872660e6e1da8. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/DEH742318921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43319b485978aaf7b84b8ba9da18fe63ba191361c396db5a94fde76b7799416a. 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/DEH742318922.
Make a Show - Malandra Jr. Remix [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141e659d8fa7e1a969fb1298bb35c780c20d6a5e08061ebaf6a3d1994b3e4e55. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DEH742318923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082c629d91a5d2d99d87f465412e8d1f12a02c40ac1f60117af6d6283e395631. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEH742318924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b42c1c88affde45583f90a61445e7b477473b3b4618247ca90ae66650c995af. 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/DEH742318925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5523f0da394dbcdb0dc7392ad6c6b006f26e21f95a88f7c99bc1c1ab955c77d9. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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/DEH742318926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206377d70b63d72ab52b362d3e7b6ee2bcbe8974d9866e64f3d3ae5068164031. 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/DEH742318927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a5995f47ce3448f6c2bb82e4209848230718e11c328463182ec5133c5ae72c. 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/DEH742318928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c51eaf9e31c88c50e59d57a86ac3e2c24528eeff2b3820bc8f4d80f6f7d2ee. 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/DEH742318929.
This Will Never Happen to You Again - [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b9809e34a3a873b2d952cdc46cd80655fb3c8d6df6fbc3cc252fa8abb9b348. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEH742318930.
The Future of the Future Is the Present - [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e6dbe2a1658d946ee5a3efec9553058a9d754ea392f76814ddd90344a4f507. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/DEH742318931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e0cb77e369700c3b0151a2aad9b0aee91485876910335f421b3a96189c3e0c. 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/DEH742318932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66207723061e2ea1a887bce266854bfba9330e6583458b5f76434a4662f3e564. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/DEH742318933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4a154aee6e4f498c2a7cd1e1c0e3eb8802198cdd30fdc71ccb3e80c729721e. 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/DEH742318934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95afb765fd1822ed55a733ccb6e3740e412da6ae6cd708de91873017aa76881d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEH742503739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161676a2788aec5d1a0fbed6850afe8a8ec5b8b6d1312cf7dd34d0c6cf3886cb. 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/DEH742503740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ede764890a412658850dc7961d0d3245d12aa10f3eb65a52d90362d2c3f0cb. 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/DEH742437421.