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 0x58fc24d0664856d743ed09adbf0b36df0a5686c5fa87b04d5280fb9dd6ca81a2. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c1c48685-83fb-4298-99bb-abeffed0ec2b.json and https://artists.proofprofile.net/proofs/artist/c1c48685-83fb-4298-99bb-abeffed0ec2b.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 0x33695f28a377ad14e70441035ed61ee79fdf6651104394d535ff75e1073c98d1. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:20:50Z), 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/QZTBE2579063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e818d40c2d615d454bf159d452ec907c09d0bb658fe7debb981da190afaf17. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:08:22Z), 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/QZTBF2507831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46aed0ff800597c02ba1fbd35e7bb22cb4930d0c62be821a4e926cd6ab00fea9. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZTBF2502903.
A Lil Church (Nobody's Too Lost)-Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2346dae3567a2910f8fabb98997ba9725fdf652e8ba7131c0b47a14ed874af. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:18:16Z), 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/QZTBF2500902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25237b69e44af484d96c879e4b4185582ae5c05ea45e170ee0a533fbe058b896. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:32:58Z), 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/QZTBF2500904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9366b1ce414dca14c406f88732c6dd634e20d44c41401e8db5ef03ca5359c53d. 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/QZTBF2500906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f43a0efe43cc45fa0737d1e0c680e9d87ba2e1a6d4bf4d220cd7e1a43a844a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZTBE2583438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db19efc198bd3dce1f8464af73637fcde7b91cb14a930b53b4b37b2bcc35aa2. 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/QZTBE2583459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9627217a736fadff1b443f97fe133af2d08a8f8fb5ea0ee7eebbb7d20cf58259. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZTBE2583436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15aca2135b23a7c888d054e22bf4702c24cd5d9217a58666840f271073fea095. 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/QZTBE2592764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe759f9070882c9981e5afbce57dc6002fb6145f0d789c8f9571c2278c45bfe63. 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/QZTBE2592791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595d1157d3449c4258c30558bc048d6062e56e234659f28ebe17f39d0b119d76. 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/QZWFF2590031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb82eb165783510167c94eee24fde86dd0ac70c683e9ab4a6b1a1fe4ece0cdd0. 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/QZWFF2590032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5ec6881ac95811a764891af88f6d526fd854d9eed329f72f29db90e6a953aa. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZWFF2590033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b7d1e0ff38507bccd14051d3855671b14be50736c7073bba87904cba8c80fd. 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/QZWFF2590034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6cf370edc4e6f77c66fc3b7ddab57edd6b6c7b96c38eba0aaa766d0977c169a. 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/QZWFF2590035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f697fe2f16389edcb56795cd3eca4740bc796fc2ef29706339df02e621b164. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFF2590036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1461ded5fa14418a9f00204d78b884a000d450db695938280a72e5a3372d87c. 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/QZWFF2590037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd17f8a07c1eec0468abdce50f48a9aa735ae0ec610abf713a95287696de31c1e. 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/QZWFF2590039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54de702f9d45f674bbc7a2f23f2bb1c9ad8a0d0d613caf330bb18580ba5389a. 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/QZTBE2592795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543e86086f29cea330ae85e58d2094416690cedccaaf351f90055a0c5d09e074. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:57Z), 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/QZWFN2543203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69145dec2dc2b526380b6eee4f6d25acc744163e9253eb837cae587a3b1820e1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFN2543206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1aa9316ea57acc1f654c4f2190f7cea1997b877c9ffe52c4e7ff101a59f4baf. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZWFN2543207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef4dbe00049d034adb71067ae88d6425459321bf7290a6458e7c7b6d9cf5b81. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:21:01Z), 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/QZWFN2543208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7765579912b42630ee6d113a20fd16b3ec44a456fa26c23cf5a22e84399717d. 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/QZWFR2593716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a2b03ffc25f7b045e698ac69025ced4853f6a8a0a4c67d2f018b641089073a. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:46:56Z), 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/QZZ7U2520233.