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 0x1afd12e1fd90e5e6c0a2540517929779db232e1dd44c7d9a937b7fdd6d269b46. 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/43b71a48-4518-4606-b473-37143f8b388f.json and https://artists.proofprofile.net/proofs/artist/43b71a48-4518-4606-b473-37143f8b388f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ao Vivo em São Paulo no Expresso Brasil 2013
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 0x600920ffde1b84cb72adc5390c7b28243a68ecb1d45b9bc3e2e9365cef69cc55. 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/QZEQU2217842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd295ab47ed03206e16c0d6ee9eb82499f403b6cb034c699a9ce2676b2b1d4551. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:03:11Z), 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/QZEQU2217851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6037a3ebf02d318babfdb0a48afe1ca6d96286a5bce6cd7f8baf2fe83c2c8340. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:30:17Z), 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/QZEQU2217854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb4e189ccc911af24bd56722a94ae1f0e0e29a6f9a86b456d5e4a95fa5e41c5. 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/QZEQU2217859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x932880fc2096d047e27ee2ecd364d44b9fab4ecd1332f983c256b569e286dea5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:53:41Z), 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/QZEQU2217862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a29f940224eaac0ea78cbb942d3951436d13060fa0ee4fcbfd467c0c6a8d3e. 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/QZEQU2217879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c8ca49865fd45b86086aa83dfc7e7bef608670f8ff74638a2d20deef1b141e2. 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/QZEQU2217885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d340a8d37c19244cbb4797f6af5cd8c3440ec4cb6cb18784ca60aab0a1f8544. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZEQU2217888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa087772b55d03b724acc5389febe060c7fa41a584d85317b00486e0cb9f9e441. 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/QZEQU2217894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf24222df17015ba494ab507f95e28d665c5a62d31488f09401732bd5b268bf0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:56:34Z), 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/QZEQU2217899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d04d6f233dc4c7eaf350115bee17bed89d36e2f00f7e9c0ada85f3593097f72. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZEQU2217781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb3ee63f398c07ca55a496307b37eb1f7fee79859178d16d86d73c6020ea5af. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZEQU2217687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb1b6c39f77bc21914ef333cae72a7f42272fdad6da448d44c30e069d5a7b00. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:30:14Z), 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/QZEQU2218066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607023078c128088f73138716ac69caf07ebe9da53570455998039ab4443f44b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZEQU2218003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1706a7c2ade4b3a814d6d802431432f8aae4e73176de34935ddae6b06f32450. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:42:02Z), 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/QZEQU2218121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f508849044d35fb8291881f78602a51bc8e08af13bce903cc1f6c2ce244ec6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:23Z), 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/ESA112429477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5313572112e397cc51a6f68769c17e011a76bc2fae87d43d57b548b078fd96af. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ESA112429478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92718b984698992834ab7ba6148efe8ef85300b627576ef04f93841e659912d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:00:42Z), 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/ESA112429479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad3db8afb2ccf7b0401e0f03cf94226e715560d76f85af1814319d564227d7a. 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/ESA112429481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2bc1b6e0d74ceaf37707cfd0d9ba51c31ff1839416bee01bd8182eac018073. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/BX0MQ2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a40f2d396d133d6a980d291b4ef2f5d92d7d8f95cefc381644dca0339a50431. 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/ESA112447263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba5f0d84888195a53cd423daf5dc5e48fd3f7ac35c947c5efdce9a7401d9b8a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/ESA112447265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0636e8216d515b641726524b498fa45e898dc6a87c7df15568a9c6dfeb723ae5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:17:07Z), 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/ESA112447266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15619ea562a18799545ec46b0c98e6a8ea7026777c9b777cec6d642767c5d9a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ESA112447267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cab256bdfe16c8b3e24c25d6ebaa1173cdfaece524685c404bda0ad0c70fe3c. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZWDW2573659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1973a740823e16237bdf0a5b6a3e0423075e1f6769c66ca644c6bb2aeaf0aabb. 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/QZWDW2573660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b7bae50e58d8e562d0f08102af28d4ba2d399d6b12924199369cf88d5621ac. 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/QZWDW2573661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14777fd4e2b3531ed37cad5f4a3edcb446d5daa6b945b2c58397b60a2b1cdf8. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:27:02Z), 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/QZWDW2573662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff59edc7e11446731c7600044119262f8c2e112bb1806c3d6a8565f19e14a2b1. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZWDW2573663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa486ce81e39fa1781357d815b1e675cf9d00921940c0e47ea3220a603a652e1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZWDW2573664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d201ef7b4cfb1d16799c53103ee691d94a08b8cc1def5eff3e4ec94ea23ffb. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZWDW2573666.