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 0x9118f147c8cdc1c3d3ec64aa5683beab7f4604439a10f4a4511cf9051342e03b. 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/471cbb19-b962-4700-a989-1b754e08277c.json and https://artists.proofprofile.net/proofs/artist/471cbb19-b962-4700-a989-1b754e08277c.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 0x839b168d3ee0a83bfb96904ac190b60a1bf10f9a68f186c6623c86454640cfe7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZFYX1944509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cba5b1da74f977b442a6e6269331d3953ae8d10710f0c48444c5c68a5e0b3f1. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:37:07Z), 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/QZFYZ1986690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8074085832457c005facbd876e52f11805a037adfcc898d73445490f6c46f325. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZFYZ1986694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8934e5196c7143e73cd180744b5f16280017b264b71b98a35b7f955d8659bb. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZFYZ1986695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4108d586f57d8b284889aeb0a8bf8498a32e2a06a83e8bbf31acceb7721f8646. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:29:41Z), 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/QZFYZ1986697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8f47139f673160352bf832e07acb4dfb0e87444cf4f0ea8030451dac27be81. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:32:02Z), 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/QZFZ41928260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf478fd92667975c924062b19c74100f68c3e0f85e081f3734d477a9ce404e441. 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/QZHNA1955638.
I Hate That I Can Only Write Music About U
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb03b41181c61a5405c96e8caa55fd274da8ef1801c5c2b4c599e39037da796c. 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/QZMEQ2095671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1a1da5b92327ff3ef740baa2e173f780ced10cce99334f2eccfd9220983ae0. 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/QZMEQ2095677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75659e5f29e614dbcf62bc1f8c95de2216d18d572ab0ee0c81f81c2efc8b6979. 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/QZMEQ2095678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3629e20db7c5deab1a84f271618a4c6698f5d006244202c3708a5d0aa8041d4a. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZFYZ2248932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc431b931cc4c73938115d172461005fb55dabc59de0906a896f9004f72abe03. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USYFZ2384301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63656791f81511b895466a9f1967012a6609c08e40ad1d6c482544f75a3a26c8. 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/USYFZ2394101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158067b938d3dc5e190dc5e6fc19fddee2448b24b2a2a58f11ad9730bd2eacb0. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:25:53Z), 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/USYFZ2396804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2c7b1f1655bd61d62844c0218cdbdbf5816719934e66ccc32113afbfb085125. 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/USEP42323010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a308e2f809ca2ae570ef77c319c9c7d0788ee3ec8941421ba1be98428c1b195. 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/QZMLX2000117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a308e2f809ca2ae570ef77c319c9c7d0788ee3ec8941421ba1be98428c1b195. 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/QZMLX2000117.