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 0x4b6fdbf50bcb85595af000aa2ce01a6e334e1cc65a6ab80f6f1de4484343fc1f. 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/cf0a30be-558f-4787-bd59-d1a34476a7ed.json and https://artists.proofprofile.net/proofs/artist/cf0a30be-558f-4787-bd59-d1a34476a7ed.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 0x1f88cde8319dc57ca69d29b1c0b848c3514cd61ca8cd4a590d97d35efda64b4f. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZMHP2092254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee757909f64a39be203674be7dec912e22d74df3af6ccedfcadd1aeb037aab4. 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/QZS642296678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6d62f299fe28f725c04b460dce356f4bd98ba9ed17c170fda41e5cc785e0b9. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QZS642273411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b85169c5ee63a25fe63d6d7be9f39372886cd884ffb2216fdd44199a33fe4e. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:00:29Z), 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/QZMHN2295603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94c1a8119be2c91cc8302ede0bddcd398231598ea11bdd513b564b327450b8b. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:23:27Z), 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/QZS672249010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6190fe864ff09c2247ec06f8e9698c7d5588d69e6c5961f15503d6182d9208b5. 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/QZMHK2293603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de795382b8836bd6db4e01892c92086603c99ac2caac9cb81546323139a12f5. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:17:22Z), 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/QZMHN2225648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf394fdf510516e9a946abd297bc7afebd3b438343484ef62b65a37b25a805797. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZKDK2291512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86587ca874511da88364f5e4a50b73caffe43c589e9a80321d3467c0ce199f4d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:27:16Z), 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/QZMHN2347386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca7ec4fef7ef410687e7b504914cba3425d6ab57bd63d17f0926b01b4b9c202. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZMHN2389372.
i will kiss u again on the days i'm not sick
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0890ba27870fdb988774b4a7f18de473c038a73c6841f9a865fabec28805c26d. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZS652374123.
i don't know what i'm asking u; anything
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd340883554f1d20c23845b5456c79be17d19600d320b289e93f0bddce15d7545. 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/QZS642381826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead598a48910b46e159f6840623334b499f365f12ca80e0522c27187e7dd2d60. 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/QZMHL2374418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1713c4e918246d71aa7f61404917e46d91f1bafbff057492da2e6a75d289f6. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QZFZ42460753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20259d03a149e32114fd37664d50835988731a19bc74ccf588d8bcfa8e6da1c2. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QZMHP2095913.
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 0xa8afbfa30c20d8f82f65513774d4372814340b82c53bfadf571b2d1b858c5c11. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/QZMHK2057861.