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 0x74e7295f0286e13cebb8d48968c6ee841c9166e4a78c37c2cb92a7e727799020. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/40c43b58-feed-41a6-a913-201afcad3ae3.json and https://artists.proofprofile.net/proofs/artist/40c43b58-feed-41a6-a913-201afcad3ae3.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 0x0002222e7ccc3458c0e36544aacd3f8455accabcb9c1880cf8442b2d1e38a67b. 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/QZFYW2096099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5180d11f73db63506cd3f190830fffe9eaf45ef58e68e31196071361642497. 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/QZPLR2387500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3da40e8c250326624dc6bced610f42a0e286dc6ad07b58d64fec4d42fe72007. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZTB82383130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbd14cb74322f1cba8569fb8ff1e2177d990f61c1b4ef9ad620d3835c3d0060. 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/QZDA72480959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766c1a3c43db55b17b2d82149c4ba754586d763c7e8624703ef80bfb619dab90. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QZHN72453904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d93f5b0deb2e15b5354a3195671aeb9c3e801019a6dceeb317c9f194e6bba3. 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/QZHN72453905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630c84d58549d71a0ed968ae3998e3bd7f40159b7e9db93cf3d3764f7188eb11. 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/QZHN72453907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58d146dd7e7f95dfb9cf6202fccfac68a445844a9db9e9d22e40ffeacd8d0d2. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:08:55Z), 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/QZHN72453910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc969eece9ddd0f2a01d812c795e9817f6c9c18c5c1d2c3ad8cc21576a5be9782. 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/QZHN72453911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef2699eeb31422a518de2460cdb4923753271ba8fa3b3f922ad531b33de751f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZK6K2400504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275897c295a82891067e303dcf16c04a7ce6e2a7496a8d261d2078b2d5dddad4. 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/QZMEM2464784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ea9f086565222b6ad74618a2c95a315fbe4d1b10faeb4294eecaa88a70e1ba. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZMER2440017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78066b767cfcdc3803e767e80d3af6deb7474fca454e2632517b286cd7c0897. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNWS2461744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9e0da8c316168a593a15dbeab5f895146a038ef5bcbbc086fbb1405069cc3c. 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/QZNWT2476586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3adc603a56609527157ae96d1397bcf7fd08897e391ef0a4314c46562f9f33c. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/QZRP42494342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898c854dbb5609bfc590f3fed52050cc4a453e2003707b7195e53b5dc8d44fe5. 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/QZTAX2495819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81cdba0b68d764c259acf1e7b41142c19e66349c5b4ca5438772acafc3dc7a8c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:03:50Z), 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/ES64E2489475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad468de7e976c7c5b51dd23639e2fb7770a2131d6530227181bfc5ddf594bb5b. 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/ES64E2499895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63436ec04daa474b81c436caf1c0d783cc45649150ba4521c6bebfced164d63. 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/ES64E2418437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a385ef25092c1737d1a594e1eb8b55a31bb297c9c6f29308e120883e9c6d9f8. 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/ES64E2419359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5ca1f04fcd9395a4dd74dd431acc9469f8f24a3df652868f1fe3d302b8450a. 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/ES64E2507047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d1e9673e9865cae42c7abebc905adfb5eac8d69408d013a1f887081921abfc. 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/ES64E2512505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca365611219a35a6277591aecbf68993575c3154f8932cd2fc1cbf324ea7d819. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:59Z), 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/ES64E2512507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfc8bcb047274f404ac683793f560294bdd109474980df26e95fdcf9a6438f3. 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/ES64E2512508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5caa23fdda3c6b268d59076e1809bb064de2ef8b03fe9653e4a087bac114a1a9. 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/ES64E2512512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef56af1b58d3783ec03294cdb652d3bd3ca4d7571ce9aecbdeeff74fcc81c40f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/ES64E2512513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4643765dddb910f02bf99b3597dbc6248407acb41b23fdb99cc6a7f16bc3005. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/ES64E2512514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2559397e3162f9f69f537cbf7913c35fe2345e0b6edd515440636449298fd91c. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:09:12Z), 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/ES64E2512516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bdf518d748964b669d3c419156ad7ff91b4d247da61ab2819c0018cb4b71eb. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/ES64E2505395.