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 0x263ee662af63da5c02582cabf5869a2c3d6fa518654e19d110d3d434ef20e22f. 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/2fa4e231-cd0e-4716-a554-76b02d3a7f28.json and https://artists.proofprofile.net/proofs/artist/2fa4e231-cd0e-4716-a554-76b02d3a7f28.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 0xd1b2409ff73d712871341c835f1e864655dd47f9823232a959bfb4fd0851c357. 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/QZES52123078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11d6b8c623721409e20a967a7fa0dd11aa9653e0d27ab6994bdc4245a9b0a33. 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/QZK6P2107998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9d3da0f2ebe2c7dfb5b7e1e9f72dbbed390bf8a9d489937934c7b569b4ad32. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNWZ2142417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f76a946661f9321f863d0902f0f2dec9ae690b958e58360a5ab1162b963852. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:08:28Z), 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/QZDA82252926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c1c67b8a1029969d911038ade6228366ecf58c1e6b2286edfc063bdd4becf1. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHN82241923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ad42b9ebfce3c290239b9d444ae5462b6adf619379ff96cd90006e8ebb55b9. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QZHN82241926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ad8b756cd66f73e78a0d25df4a13a60633957ca2ded6d4cd491cf033dffa41. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:32:19Z), 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/QZHN82241932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbd961815ddc37fbcd6fad73ecd2a5b4cea6d8b93009caa37aa72a69b259ba6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHN82241933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0112a93a140ef35101276ad442b78e952d5b06075782fc8db69ec6c36c83bf. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZMEN2206202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa70c151ebbcd9486651dbebf4b8455da47b4f89651cea37562aa404c088e2c3b. 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/QZMEN2206205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfeb69419e444c44abcea13167e202da4c26292588b58cf30a90b2ea989191f. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZMEN2206206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c0867346e3dea87e941884ea6b856a90f54f948d5079edd741862492d84c47. 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/QZNWS2204811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c918a2d77d1e88f2ef42fa025409b4d2a4f2fc623dd77f6c9a4f14caed9f79. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZSYP2344500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b7fa018bbdb0de8327de92d4face940b90f164659994ca4b16d2be9f0f6f0f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZSYP2346254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b32da9a886c57fe6b1747a4b4678bc268ff49a6dccc8315b33de3f1156b7f1. 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/QZSYP2389252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a84fba22415c139c02863ad41e3824bbcbdb35b6f8ab7d191937953117ff85. 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/QZSYP2348854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e8dda1383d2e6e789da6f1858dafb4d273d19c1428594d1ce7950dc51ae2d3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZSYP2351184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb520f18b7d5b2dd415f99aaddbff464592c443997c6c40e2ad919c424b633763. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:11:03Z), 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/QZQAY2434206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb829242d3745015bf0b86e37f1ec7683914888e81e4f4cfc9c413eec662ad447. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZSYP2407810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82a7ce6a9b36883cabc564b726721575a13f7424dcb1573112a54f669960c65. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZRP42423051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d12d1eb3bdbf0b8b5d75bc38ef97d860a604e008feab0219144ac8ced0c1767. 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/QZRP42423052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0b098328db4c8c8a5b04ad6a1e446dfeb54f24dd0e482a691a173fb8e52585. 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/QZRP42423057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619c71604dc6b28a57ebccd937973c059aff696f8dc93448b8200051c4fe26d7. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/QZTAT2441325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0144c54174ed69dd31c3dc470967f2809926ccda1b7dfe53697ffe3e73fb44e7. 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/QZQAY2422174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c0c8f2514b995b3ea3963b3b347d5fb900e1a992eb022625590ee4acee7193. 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/QZQAY2449105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0144c54174ed69dd31c3dc470967f2809926ccda1b7dfe53697ffe3e73fb44e7. 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/QZQAY2422174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f7b6cf06e0829b93424ee3a01b33c56f898f138d5fe24f3b79e1d410333aa2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTLA2442642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe870dfbd345f4681bb1a32601cecf8af2af646f8e4a871af6c60c7de3c6871cf. 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/QZQAY2496803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78109fee168bbe5fe7d40ee3e7299f835aae2981e4c950396c6ddb356dacfc1b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZQAY2408022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf219f0565a9738d55416d0585b7b7051505a9165b2e35974216c7dcd4ddd1c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTLA2491501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11efd115d562f3501525204899a8faf39ef7226abea2817644cc0e72a603bb0e. 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/QZS7J2442857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c7ef4085eb29f57a5f398e96add7b4612b094596fc81af5e90a56340ef5c88. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:24:13Z), 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/QZS7J2477755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe200f895638253a3e3a9ba3ded5451e0720324a6976e78e0c8c13dbe621f3de1. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZS7J2483752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fbdc28753a31fcf30fc2d1e313d870c062616a5ac0008d376dda6f53def6d00. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZS7J2425142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1c4f23fa80c0f71c7dd7f742f592e3bc80dd2692d471d40388d7d8043c5563. 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/QZK6K2541720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x036fe35f2ed24d903c220424e81b038b23b4d343e26f1de6fa4dd6afe52d652f. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZQAY2526000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9466c0bd223b88d3cc90ee9f6eef02538071577803e93e8867f6e0188e90dad. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:39:30Z), 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/QZQAY2531792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cdc4ba6bbb475ac6bed50cc40b0ee38e170ee89d1c1462bba9f4ecae09aaf8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZQAY2563407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee234392bd51aab0b3e59b132beece386849644c74270f004256f6473d6121b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZS7J2535962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67862b5bd48c901772a264cf8deb1aea0782c773458b0f2388fefeb74c9a0343. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZQAY2515351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde915d21ce3ca2b90ab98154b20ad99bd5275f5fb3de34397eabbf54d3894ac1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZZ7U2568122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe204e31694fb4077697045a3fa104b41428c80be1d62f7eb7b3627f44f01403b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QT3EY2508649.