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 0xa956de2c7000a6baf293928d36cb79910ff381d800a25d8b228ccad3eb47027a. 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/be9307a6-0ad5-4368-9b04-116fd4c9a62e.json and https://artists.proofprofile.net/proofs/artist/be9307a6-0ad5-4368-9b04-116fd4c9a62e.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 0xb9208ef7b4a83a6344c4e50a47772baaeee2b34f146ee04255d6d5260994c0eb. 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/UST8K1702663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494c342908bfc8fe2b516583f11b2092e42b7e62ab37f2bb7b12314a48a4ce39. 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/UST8K1702669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x408ac76017534dbfeee6334227240bfc3d7902e6b27e5c153816ef6ecb0b4b28. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM2PV1690806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd88bae26991d3ef4f4723d0cef661ce9d4a63e507ccffbb04f2f28fb84e4c3. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QMEZE1831546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54cac83a11bb0b9182e2b5b8e0153c94c3eccfc2fdfb3118224bf27ceec38b8. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QMEZE1831547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5360b14d0d3b516b4e0f743783ead07790a02442d368f61d7d09402b6cad30ac. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QMEZE1831550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54cac83a11bb0b9182e2b5b8e0153c94c3eccfc2fdfb3118224bf27ceec38b8. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QMEZE1831547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9294ddbbd823362c11d8abeebebe6f88e4eae9eba3d52c3e181a7bc914d7989. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QMEZE1831548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5360b14d0d3b516b4e0f743783ead07790a02442d368f61d7d09402b6cad30ac. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QMEZE1831550.
Locked Away in San Diego - Single Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a385003f198c456bdc0fad9924896352bbadb93b37370f2a9bd6eb4d3106ee. 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/QZHNA2062746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5c0ccd8552936fe5bb82e3ec8116cbe697bd5fcd6d64eef2f64a5fa247e505. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/QM6MZ2089792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e881142b10b884e1e0f7b393fd92ef67fc25c955ae903afeeb749880d0d13d. 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/USA2P2241081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e881142b10b884e1e0f7b393fd92ef67fc25c955ae903afeeb749880d0d13d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USA2P2241081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba941e007c2f6653d99f40269254ec3622af59afa999eeef80dc7c9a8d08722. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/USA2P2243359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda5c0ccd8552936fe5bb82e3ec8116cbe697bd5fcd6d64eef2f64a5fa247e505. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM6MZ2089792.