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 0x8f8a3add76fd4ef4c66301b48d29bed5bffa05056f709c4603bd844b2900750a. 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/38208684-ecaf-4b86-a5b7-e6158a580ea7.json and https://artists.proofprofile.net/proofs/artist/38208684-ecaf-4b86-a5b7-e6158a580ea7.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 0xe93944c539ba9b00cb76c5174573f85fe5e0732635b8be87289a7e216f2c9bb1. 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/USHM81691354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f654a08b6faf9497c78f8f13aca5d9403c0a9ec08fe524883afaa2ef078cd87. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:05:04Z), 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/USHM81691356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474e80f55652fc46e017782fccf68683563044e159fb1326880020e642edf8b3. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:09:05Z), 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/USHM81691357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdde06a52ecd02a0e66971478d16ece7854fb4a570cf5c7448b01abd2c1eb41. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/USHM81691358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925768e8781ccb788c7726c35cebb219d6f4e676bf0632beaeace2cb0fcc878d. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USHM81691359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe989e0c9bd9c6123f23dc55543a75b1520e44a0b05acb4a96eb36bf44b3ecaba. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM81691360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6324381f0fa269defd4c600063437df771566d5c6fa7aa299dcd3553872f0b9c. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USHM81691362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9be7a917dbb4030c735fb8fc56817fc5a96c98f276f3330a8440ca28f7346e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USHM81691363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4429f62b37a9fde273613812f72e2f63e3b81fe2c3a2b208b50e1168fae3196. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USHM81691365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda7b70aef40273523e5500dd6e9e3d806e7fe8cf17290f85eb9a08577068512. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAEK1946589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1deba9d88188543835973859858a7702359a80efa4434c0a2c071ceb3c583621. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAEK1955337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5165bf74b2c5ae7504f001b1b8730fbe84923d4d6f7e735106753d3d882cbdad. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAEK1946595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa086ae25ce448a3a81ba65b7a74e19ea65be2a72ca60172465a80c82f267b944. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAEK1946598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528c6ef8a807f36db8853e530be1436e1cf33723b9c485f45ad207dbd13aa689. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAET2048883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132396309e5ebde5a96c01249acc4625a3dd1ccfa491c1ff600c1ae914159e75. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TCAET2048898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e4e6422e19d49e275c08cd8db89f01d0f354d5dc5f58bb237cd84d806fbc35. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZ5FN2238460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0106198b0a3a07fb4c2599cfe14104a46c5a891b4b2c68fe8860323c0984776. 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/QZ5FN2238461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292d71c4289122b3ca869698c8f0bc650370b9900fb608b434d8398d3adf5594. 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/GBWUL2149747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f09d0201c886fc46deff6faa143c487a33bf76f0b16543ebc9b346db925a17b. 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/QZ5FN2238474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4248e187e9f13bc7e7cfeef538cde7fcd801a3f6ee31306c398c88c7c9f481. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZ5FN2238475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08356085858245847f016a1790aa1de0e1e16a810b2476063843a3d92f981a03. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZ5FN2363771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd342ee714eb29bfbddc6185bd37f3694c8a1d67e530753cc25a6eb47d1ca31f1. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZTRX2459654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda10a89d3a09748ed0ab56d3bb1bd8cba45f66bf4aafa9f4ba2de3ca7167a9f8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZWV32473139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf557626133dd84d1ffb550c7d13255e51dd8e04519397ff3f7145a27391e4b07. 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/QZZEB2400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda10a89d3a09748ed0ab56d3bb1bd8cba45f66bf4aafa9f4ba2de3ca7167a9f8. 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/QZWV32473139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea827b6cc284d074716609a91c24da3b0920c0b90e0b3deab1437def44574213. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/GBRKQ2584511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf557626133dd84d1ffb550c7d13255e51dd8e04519397ff3f7145a27391e4b07. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZEB2400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05887e1ac8f723e6fef7221097363a29c035dc26d608bc2232cc2beea2c5bae6. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZZEB2492397.