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 0xc34459b975072706d14f451b78a1b7d3b3c7989cc2244b1371923c2584333b1a. 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/db2cf886-c4a7-4ad7-abaf-9668dc4fbdb4.json and https://artists.proofprofile.net/proofs/artist/db2cf886-c4a7-4ad7-abaf-9668dc4fbdb4.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 0x942d485f27a98c4e768859edcc40ae4d0cff86e1754402df7e3a8727205392a0. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:56:01Z), 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/QZHNA1958994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966b8960f297db421cea3daee5a70fd7e01a886ec683caf4d01587cb8c9c9f7e. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZHNA1958995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc4ccd46281c61a4780fe6cdeb51f826e12f329ff91303429bf659d764e45c3. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZHNA1958996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f43a5854dc96b42b89e1deea4af65424b00e678675ee6cc7ff10057a956f2b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHNA1958997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375316a807438aedb66179597f87771586080b3ec46b1e1dc5e58818ed2c3c32. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHNA1958999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb39e46a0fa998844518100788b5e7e675c8d285df980026179f62537a5eb8e7. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZHNA1959001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531f9d0b29d2fc15d134a1748b4de5d9e490a344628279bb4dfb27077c67b1ad. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QZHNA1959002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde93df263cf5243bcfa6c476e77d4f5c284711fb4e9f552f316e111cd00724b. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:42:39Z), 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/QZHNA1959003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefdcbb1b2bbfeb713a7415b2daf4177d06265bd192f3099ad88c50fbe476ded. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHNA1959004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad93b74de8a0119249020f74740cbc1e7f36c6eb9a27f5bd0ddef274cc70942. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZHNB1906239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc661478abe597100ad5f8d2e612adbeb0dc8fd09eff8b1bc53bcf43385133cef. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZHNB1906240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424c265275d7a134383d3026671bee90f85c22ccb634077d78b67677b7e9a5de. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:47:46Z), 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/QZHNB1906249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb40882a872a37a0da8bf8d6cf47c05b9cf1eb25f0beabcd1e7f77c1e4a53e8. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZHNB1906251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8eb910146503bae2a67b30b43f1368d91a89650d226504dcede7692efd7314. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:54:35Z), 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/QZHNB1906253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc764902b4ff247deb30d60b4164be78813190ca73fbb622bde35bcd859c43d16. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHNB1906254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57c85f0ffda7512ace0225802b7d778122d0ddbcae5c839f45b1da18dd94911. 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/QZDA72011276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a83fc2fcffd8cabfcb73db394837d6e0fe7a19d06a9e1b45b3f9ed13a2b61a5. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZFZ32102589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61e23c6943476ae3cd1323c35fbd6e0f613ab51f26333c553e177df94ec4c9b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZFZ42124025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ecd93f306bd6a651a39cac13ee6ae97fd0b384d76e6800bb34f16897e63f84. 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/QZFZ72130740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05914181478733c31beacf71db2ed5d8b28540430e9afdee18ec6d4104dc7ab9. 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/QZHN62152967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12bb606f023d2817460ca9b4abaf987140e9bbfbc90c202a7862525a341bf11. 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/QZNWS2174710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328b1b3784e5997bca73c68323c9f8fde82d6fe90f8820cfdf88f70cb75242a7. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZTAS2139183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773f17e9fe2cc55be45e8da291857f2c49a5c53c01d1ec1ef09f69aa7a7e8264. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZFYX2227860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1b295e46f3cfdc51ed53ff741e8f086ebf7cdf0552284f09c8ddac2271339a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFZ22225595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17141fb7e786fa65b057ef0d2d25c5a3da876d6853a39e73ad9943ceb755f5b2. 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/QZES72326409.
Mix Cover : Rivcchi e Poveri, R. Zero, Don Backy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f2e286cfc14f5aa476d68a10a05d3047ed0e44dd079b325c966178386eb5a7. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZWFN2391981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf193bcc2667f1f9d430f4b8df83d635d9ba461cee5f71d6d830d4f0d198e013. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZNWY2589962.