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 0xb1d97d4dc672185da3aca38bf4116a0255bba8d2eaf793142d609c0a6c5a9e0f. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d73bd969-f3d0-4303-b43a-89857ea7e686.json and https://artists.proofprofile.net/proofs/artist/d73bd969-f3d0-4303-b43a-89857ea7e686.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 0xebe9984289c82eca028d6fca707015b36cdb20e71a5bc65a97ef6b3e996ba123. 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/CH6542431645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0e63a680245544856f0ad5e9518a2b2cbc4dbd2e3109a8733ef4c63db5679e. 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/CH6542431646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033e4c3e33c77f61515078d164dc16b0c10243088145ea28899806dfc262f490. 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/CH6542431647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfe3e831d2a889f03988dfffc2324f01b4d6ecccb1178a7abcefb327f2997cc. 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/CH6542431648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624f3b1ee49516e5f3451701244f4b6a4ff38695e56af36b8eee362e41c0884e. 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/CH6542431650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4752094193bbb206ff4ddcb6cf8e1a01c50003b32dc5cc32e0376ef40c3c2111. 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/CH6542431651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9203c3ba00f18aba49251c05c633983657363aae8fc0c422735f314ff3982d08. 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/FR59R2471892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2552cd06df4166f88f350caa762274dbddd9f5157cc1227775b58c2cb3ce240. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FXR752402700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1369c2d131a685b16dfa3f5458c74b5cb15c789f65dac9fad0c02e6a9a997fe3. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/FXR752402703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1369c2d131a685b16dfa3f5458c74b5cb15c789f65dac9fad0c02e6a9a997fe3. 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/FXR752402703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae82c4c6fd9a2be668de32f78b9b3bfd17134b22b204f7f8d5b0346b07f5c11. 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/QZS672464486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12919d54f57d362e3a4c01cc6c5b77d02dc979e5ff21d91c7a18aa299b35720. 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/DEH742423467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170a68d3839f7c715cbafd4bf78cf7f3aecc7f4dc2ddfb5b64607a537dc1ee8d. 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/DEH742423468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a62b6f3bd91df0a66d1ad80094f130188416206b64b9c704e2ab240c04d694. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEH742423469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6d4ed9ae019776edcf0613ce0effe3f46e452d5eded1d400a2e19aa7177830. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DEH742423470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec18d71f91db66cb2f8f289624c6ff0ecb263910b72b426d0cd25d37a2ae3e2b. 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/DEH742423471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9486134f532d9daecf93b2dc201221a5454535796a7d7c3ebc1f7c9d359e22. 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/DEH742423472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49dea9bcf0ea1b9e00a54e4390072f4fbd88f040bbe9c3d858e1286bc942170e. 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/DEH742423473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2466a6194cc8d1f7a29188290a20389664169246c5f058f218cfce3005266cb. 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/DEH742423474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c8211dca0975ce7c0be852d2fe701420d6134e240d592116acbcd5159334ae. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEH742423475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001f858e83a14523eb3d03a83fd15b4543cd372398ed22c4542a725c049289a6. 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/DEH742423476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c16d53dacab277f837bfbb3c4048bb67bcff4fb77bd06f3770e719b41b5ba7. 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/DEH742423477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f900df2d39c3bf063feae52beec3d77c6da0b976d3738c213c1a85705d7c18e. 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/DEH742423478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3162eac5b78c17ba506dfea0bbc7c1881c7d612764e2c5dd8d3f54415c21a6. 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/DEH742426403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91d3e6ddca5938c7f91d3a3aca5e89172a11ee8bd7243d14ebf241dbb372ee2. 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/CA5KR2465028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d70054c2b72d8f5a3723caff8d82600ea87f6012f29c831a6c1721b2d070b3. 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/CA5KR2465031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c084fa54f5cfa50e25fd8db32e39d88c3e68ccd9d984c6934c9b42285b85f19. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CA5KR2465034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fbf07da22e52642901462da97eff34060b1440756a7493c07107fd2c5521fc. 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/QZS652376147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a88eb173bd437ee68c818704c38215fd0ba382fe8f875c5ffe0c44dc27bbde2. 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/CA5KR2501480.