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 0xedc3300b39b2712af601a4c1e15706062b057c7bf50839c2c3fbb8ad911db106. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/100f7683-43f3-4667-8c2d-9fde8dd261d7.json and https://artists.proofprofile.net/proofs/artist/100f7683-43f3-4667-8c2d-9fde8dd261d7.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 0xc01e1d5d53465521105291442f8ab2fb894e70399c3951bde3cb6e77af9670d8. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:38:34Z), 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/SE6XX2132430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac28cd209baa9f6513ca53bb2640f4a2145cca0aecba66090803a19eaf2ffe2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZPLR2377768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c409e80e4f261a5c9de21cd64681dd0b3c1b6360c3ba0735bf25a77be91173. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/QZMER2366498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9984b74625719a25251d88851ce954ecb475293468303a0b4c451bc31d6eda2f. 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/QZNWS2218195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041dcd4305855e594596203e26b15985c084a00cdc1f2915c381681b739cc511. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZFZ42329492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39838ca2b7dfa7dcc93b654f7e940f8b7cf289ef456c526cc814a3c6b4c42b8a. 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/QZTAZ2304093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea7cebc91983fa22718e4949ef8bdaef20b558c61e81c27ab8b04598dabd39ec. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZWFE2309313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4703f1f0721d40c0d1689a2254580e06b246a4d439ed5203602453095d4c33e0. 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/QZWFE2362008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9039368ba1bab8265c3868bbc5ec34a0dad3eca8e8836b47b80de7f8eb15d015. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/QZVEM2380586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba99b522a3a751ea09fae37e123e2e660b55ec9a1db3cb268c5e843364620af. 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/QZVEM2395477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8aeee0966f654f254c938facb634de4f4de57b5dffb63c245ddb81e79d4eef7. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:52:41Z), 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/QZVEM2395478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e00a50fb82b844048e9fabb402dffc045550d4935d8df472ac13b74013a7cc. 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/QZS7J2488392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0eae3f26a16e9658619b1fa04548dc0356216d8c1ab67e871ec7cfa9c50dc5. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZQAY2461207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30f9a678960c317ffe8edf508ca1870d37b314f36ecb05968f828e87c5ea612. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:29:53Z), 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/QZSYP2436037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e3ada338266193835195c18fe5a5e2d54e94830b1d4884f59176af168643d3. 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/QZTLA2423619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908a6ff266274e49624d72d86df8193fc11d3e5a7b53fbcce3b18b1d5edce122. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:51Z), 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/QZS7J2429540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d66aea4a4383f2bfe63e708f6b2ef7bce4964be1882af9000ed3ff4529023c. 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/QZS7J2414323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23319b8a24040b693c6181808897cdcc51672537b2811641f07c280564dc96fa. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZS7J2447674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2b3297720a15c7c5aaf03a08c12e52a8276807bd548cd48a27eaff4d468476. Chain 2 (Bitcoin): anchored in block 958493 (2026-07-18T04:34:53Z), 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/QZS7J2488952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4088a6c966b2245b607fcb16444a3d91da77550aa49318ca9487085c0b768d1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZS7J2416610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c546b61b6434e5fa8b87aa071c467ae5cb761a4d93d90825081b59c22bd8d1f. 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/QZS7J2453059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbebea984532c6578b3ec306f68ae339b68af42df52c0bad5be9eaa80fb3e41f. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/QZS7J2454128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189cb8cf38d974ead71824004eef5ac30724f8f2bef37fb51a115c247aa72a17. 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/QZS7J2442425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d63e7296a9785ea713cbf69a4a578bdcdb8a425f8a687dd91c4d508017384f. 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/QZS7J2430516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30084386713fb06187e5668d3857e816c518131c324dc3cb95f2fd2af4eafd38. 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/QZS7J2460674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908a6ff266274e49624d72d86df8193fc11d3e5a7b53fbcce3b18b1d5edce122. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZS7J2429540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ab3cbb1581948d0fb1c2ea243a9bb674b86b531e901d8834ba201e07cd8696. 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/QZS7J2441171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6329d79ce1b31ac388441d8a5544b23bff8d13f6cb3f9dee19088f83e648c8. 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/QZS7J2456072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23319b8a24040b693c6181808897cdcc51672537b2811641f07c280564dc96fa. 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/QZS7J2447674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b589123b33132a91202b77670be23aeb814cdd7cce0df629875ad27384c179. 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/QZS7J2468313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860ac502768b55100eee1be1a09ecd676cc7cb6b63fdf4fefccad450e9e07ed2. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZS7J2495096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4088a6c966b2245b607fcb16444a3d91da77550aa49318ca9487085c0b768d1. 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/QZS7J2416610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c546b61b6434e5fa8b87aa071c467ae5cb761a4d93d90825081b59c22bd8d1f. 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/QZS7J2453059.