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 0xb6f930e1a941efdd7ed3c99129460f1c1f5e6fef2e5d09f7aa4793e6f1f0f280. 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/a53317e8-45a9-4b1f-9e90-70e7a203a7da.json and https://artists.proofprofile.net/proofs/artist/a53317e8-45a9-4b1f-9e90-70e7a203a7da.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 0x5951a3bdf38cc27948e26277362c69cbcefa419a951617385bc7cfadb1b2baad. 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/HUA253785309.
Válogatás a legjobb koncertfelvételekből
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c919c385d7f678e2737bc510df05c99262a18ae7d4d87accc8b408348a03e2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/HUA253794111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd882d69a8d2b9568e19074756e95c6a3770709b0316de4afc5bc9322391cdaa7. 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/HUA253788202.
Romantika: A legszebb magyar szerelmes dalok
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24ae0f904185204800cbe0045edb2b411b63632527eb2c3f3a1fa19d5fea20d3. 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/HUA253773119.
Jég dupla whiskyvel Válogatás Horváth Attila összegyűjtötött dalszövegeiből
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e0fd8d0d54736b876feaabbf00968b2ac0680653646f868cf9e6a808228df9. 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/HUMAG9500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756152b8b84f3e180e425aeda66c058d95e3d04f42ff625aa26e90d50528bf25. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/HUMAG9700405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f67df13c6bd4777ddb10cab0efb1f8fb37a31d5b63131936f7fd2b9a4cfc22f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T18:08:07Z), 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/HUMAG9500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dc2a3460243a599cc8aa373a982381e42b91b242ab386fb2aecf8dc29163bb. 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/HUMAG9700412.
Jég dupla whiskyvel Válogatás Horváth Attila összegyűjtött dalszövegeiből
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5885ffd0b038f21938589a7a0b0625d44ef26b4ec6a70efc58b873fd6d0440de. 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/HUMAG9500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a2fc0fc4734256abafe5959fb2d204f9c16c98d6f4cb860350e8c31a45a5d3. 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/HUMAG9500548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3366fbcefe390fc795cbbd449b5345b0c8cb467a0dd9158e66282b8ee829ab35. 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/HUA251752802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x258e76d07caa781c977c66fa5932bae66aacc675230a80c72fc48f62fda163a1. 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/HUA251752809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4afbaa962b12d44df663ec7ac6cd81cd0242bf885e2a0b16b582073df615d7f. 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/FRS182136842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa107c942dd06c7edfb7623c684665299c92491d84c678139591804462507b5. 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/FRS182136843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bae35f8c15739b97837d3fe32dd472c06620a0ee8e6a8a8fb1b05a56e8372a. 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/HUA257120401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb313c5782e6a3ff376bf8607ae18a7c622d5d4562f02ba01456ae67ee2bb672a. 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/HUA257120402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83a01758e5db2b21d3601d97a1c7721d5550416007286e198470f551465413e. 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/HUA257120403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669b17f122431a6a858db7eb7d7095e916a12bd9b9d3eacc14adda2399561068. 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/HUA257120404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243c100ca48e1cd58e11422a42f83fdfed6ae59ab37a9d69facafb8e26f6b90e. 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/HUA257120405.
Õszintén akarok élni: Oszintén akarok élni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1438273bc3b18d1d8ec747171796c9ef77a6ee6b92fa7704fcdfc4822f8157. 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/HUA257120406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7ef4bf1c597a606aa0dde67f0fc9f06c5b5ade76409d7f9316d2d1741f9bc8. 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/HUA257120408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4630eb34c5c8566c4c5e864b905d3b027ff700b192d605145b9cc5465a9e1815. 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/HUA257120410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96182b0411dbd79a1121dfe7c7d25882243b9bfe2a9ccbfb4f841f134336b896. 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/HUA257120413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dabff07fa95b97cfd041fe558bbf2e2870bff094564e115ae9c701579f08f0d. 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/HUA257120415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6e75651634af842e457f2fcdd174c3f0c0abe9db84a1e933cc44076209eec00. 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/HUA257120416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15cbd45d8e781558ed8abf8ee2e9d12a645822793979853e28e32bd3bdc277d4. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/HUA257120417.