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 0x7fe87c4fee842f38d046158bc36cbfda0290ef2640685acafc780f83590f0839. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50d2a362-5ee2-499f-a54c-a9fea5768bbb.json and https://artists.proofprofile.net/proofs/artist/50d2a362-5ee2-499f-a54c-a9fea5768bbb.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 0xc8ca869cd05b7a1c904cf1cfc3df251508b3ea89f8105865ae89342267cb1bb8. 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/USACX2200424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d5ff15451c6998d2c85bdc5f7ca6ad7e840a0a4ee03b457894c18d8d8c1c78. 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/USACX2200668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbb583991eeda105a81d83b726aca2fedf079c30aa7bca8eb1ea76c2258d59e. 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/USACX2200624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8ca869cd05b7a1c904cf1cfc3df251508b3ea89f8105865ae89342267cb1bb8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USACX2200424.
If It Ain't Broke, Remix It (Instrumentals)
Those Were The Days - Remix Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4f1cff0f4a0b2f35b760c6fef5dea2e97b2ee2bdd6c5c495a9dce56912aab2. 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/USACX2200669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81815eb5754d886a320a200639d61f5fe6f092df3020df4583fe29d5cecb42b1. 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/USACX2002073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb59d6bdc97ad6dcd01e909e9ce5e445bcf64c0cef86ca525130ed50c00fccf. 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/USACX2002075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53900524e7ad690a6163e097ae93bf7a05a6d446b0293f89d4e574b7bd3fa0a. 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/USACX1900305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ca2db208c7631a9093d2f9152382e6b9f1bd70e4bde1f57e96ee0103d539fb. 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/USACX1900334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6246c1d7e50750e95b7c8daf23c3224f52ceee579957815e2971de69683a65eb. 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/DGA072468876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ca2db208c7631a9093d2f9152382e6b9f1bd70e4bde1f57e96ee0103d539fb. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USACX1900334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03aeffc9a7fe952772b9a5e70fd76962dc667d663d37a9d4cfbcc30a6461912e. 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/USACX2002412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35007ac60ff0cfcc27994b7558a6b7ee9ac21f2923600437f71154202edbf41. 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/USACX1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167ee774cd1796edbcea7b3044c91c32518dda76afada2199bd164ddb12cb7f0. 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/USACX1900133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e738f8ad1efdb50d83cc85c4484757fc56f49a2545af60618345529963843b6. 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/QZK6L2029486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520aef9eeee51d397a2ceca968bcbca856f2fd3c625109ed2c78e908ec6c1962. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/QZHN51941857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e3a71235645f02a5831ec45797faa530ba271674081151045eafe5d13e2d8d. 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/QZK6L2029487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9619b305689a6de395813f0397fa015e4c4667371a388b9e061967d754ca2c8. 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/QZHN61968024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d129c5145258ac602d6e6a36eeecd06cbf4e4fc9602933fd95eecd10269c614. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QZK6L2029494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222bbfa2521e2879b715234138e6735ddc717c653307f813ee004d4e86c9f8f1. 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/QZK6L2029495.