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 0x9861de259cdbc563760d421266a1fe86bd4690d9b8a903dd66e81c219604d64b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f4a50bff-7915-4f2b-8109-4c92e24a3e85.json and https://artists.proofprofile.net/proofs/artist/f4a50bff-7915-4f2b-8109-4c92e24a3e85.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 0xeb8bf5ddd9fe4f3de215f1790e7294e919842a42f050e7f81dd9f34a7275b8c9. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/TCADW1843628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda50125cda9f9728e34008a1a7e2764c28d2e4875bad73f0ca6c3519e76c07f7. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/TCADY1889047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3a8eb52d2cf7ed99a3dadfd8e8653eb08c72ac492fd8c3b2ee126fcc69910b. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:42:33Z), 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/TCAEL1901252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e1ad82471ee0b58add7150d5ee307247d910d4b533506de4943306736d1145. 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/QM6N22061805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11bbaa1adab4e60136ee8836fd610259221f0a6df231f168d793da5005247c4. 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/USA2P2102253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd9b8538316fb79cca1a7299a8f23834fe906ce73f66ac0e882c0db9a7dfc19. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USA2P2110076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11bbaa1adab4e60136ee8836fd610259221f0a6df231f168d793da5005247c4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:43:40Z), 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/USA2P2102253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9e05df573e543f6da4530939b311f13adb127262e12881fa0608cc134972ba. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/USA2P2110077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8651f6e516a2240ab1f06054366f9e34ac7cfe2a4f5f49f5046d511a52985089. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USA2P2110079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b810817fc566043989b182bd3fab25b2a0676689cd5423432149755051d0af. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZHNC2240221.
CÓDIGOS (Remix) [feat. Hozwal & Leebrian]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b35b4e2a89e621a7114f3a82bf6199c43f2b7b595007fddbb49eef1c7ceed99. 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/USLD91729355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cf0eab912c53613c14f23a8fbd810a1f7919789363eb8bfa8f07b2e65e4005. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMBZ92092371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6087c060b6c13309fbb53190a0d6e8a671bf88ee59fabb9d79ec0e746f56159. 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/AREZZ1900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f621077bc654b7ef553f2d0e363bd20bc0b513d38c238572d5077708bf22f8d. 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/QZMEQ2124313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0b5e461a7468955972de07703bc0e39ce4a1fc88ff7a16aac6ab229b168a1f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM71925571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb37783325a22d289523ffb81f781a7c1e276150c9ebc424e018d28f37c26367d. 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/USA2P2218362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794887fcd2c19fa0f687133be97c397b4856555984b5cc0c6ef9f8d70fb6aa60. 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/QZHN22000125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d495062c03ccd78f1556e6a36e72f886218e48174b1199b7c569bfd4ab8aaa0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ESA011842625.