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 0xce56d8f384863549738521ef87d8e7a3e5ee5454e7c1635f005f9804c5f261b2. 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/0f668c1e-4fe2-4156-9b99-68e06df49ba7.json and https://artists.proofprofile.net/proofs/artist/0f668c1e-4fe2-4156-9b99-68e06df49ba7.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 0x683a6af786577f070f45011632f18f71d25b1561730b774061cc0015764d95ce. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAHR2358447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218bb75380dbf26f3f2e0f77b8068aec06faddcd0e8b5982548c0e0aaba15e56. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAHY2464850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f908161d35f01aaff41ecc6c8a02a0355f7ce33af4cd45d4d6bfb357322a25. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAHH2391057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712cb87075787a7e6649b1170f3cd4ccd3b5b02bdc7a36e5631da97c22cae027. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAHJ2319020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a49823a599cf5f908d872e29ad455adc4b7480fbb5bd0c5ff0b56b1a6315f32. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:19:23Z), 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/TCAHN2323775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2291a18ac4d5c2231ba65131721a710c9f80a417a6e7ac3df3c42428da2ab5fd. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/TCAHI2377057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8749adbaa8671b390d5ff8864c0bf6d4596ce80b151cb9f4b72f6bb8baa6d6fb. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAHI2302109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba3ea4a970c264624c4754134e68bffd3047b90100dc445cad9251a9ed6e2fe9. 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/TCAHK2325221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3b56b21d35438e48e2668b59725ac43e5fe444bec8233da33eb60104529328. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAHJ2337609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4687b16b811c042ea8a3b67323a57c4e503d99208ac7c6bf57555c7679f059. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAHI2325752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4d6de431ec0ebf0dde578be93cae6f2c2e84c4f073e20a05a6b37d1abd3ec9. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAHZ2414746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901f0c70a663a26e6934499433dd39490be033835ceead2602c7870f5115b1f0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAHZ2425441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1061c0462bb30533794ac7fbdee37548c5cf5898fe0817a59537db24555761f0. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAHZ2425448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0211fe17aed08e24cdd122d54ac0fc0415a8799d2c701692f9e5a5e04bf6217. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAHZ2425457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf249437afb225ffd2fb14488c8ff330026ab335e3b0aea3613bb1dc4d06b18af. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCAHZ2425465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde4a6c818369d1cf01f3184d11e3da2acd95632e7232a3ec0e2815d3a7629e2. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:29:23Z), 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/TCAHZ2425504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c65e2dacf4ba6b64fe3543f09aca9a853706015bec9cb2276c5347d025f554c. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:21Z), 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/TCAHZ2425512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0090ab196489d7652e7b47f7f5f90e93f0579997b6f4f97d7d5f8e23ab10fef9. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAIB2476302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x566810336f66aa8f3e0a9ea74848c2be8fb829d96c49a9fececfba8562d005cb. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/TCAIC2451832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc5c66fa9ee1238d366e802db79d1a7d654ea10e565047aa738abdae302a556. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/TCAID2429259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c6d8eb424277f0f88e9137b4a8347beb7736894188f9c5ce562ba498d1e568. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:36Z), 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/TCAIE2461793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad1b8f04a94ba4f1848010de1459fa27e13f4b69a2e37373a97a23af21c325c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAII2434118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d9d2f2106f9a071d45c181806448b6b7643a9ed51342ee6bbcc6d239edf2e9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAIH2468885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585eb130fa245df301360e3a66cef3cca75667a3ad5192ac750269f2d485e34b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAIH2471370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf992b232b7f4346a6f62b0494243913538687910c5cebfa0e4a410302771c2b3. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAIP2465891.
Вийди вийди сонечко (українська народня пісня)
Мурчик і клубочок (казочка для найменших)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a023e6c8aba547bd5dfe109f3eedf72fdffcc274e911df1f6bd9a46c88be41. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/TCAJJ2559437.
Два веселих гусі (українська народна пісня)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72fdc8b1e844bdf616e139d13dba7bb6200b1bf2cc2ea266b7e601a0c3bd42bf. 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/TCAJR2503684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fe9aaf4a16fec35cd2837cda8d4ed3701cafe85ad286ee5e3b3dc237388b0e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT65Z2540138.