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 0x769defec9893164c4c854c02de03cfcb50cc5561dba1b040c3c4355366b78899. 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/7506a482-b620-4808-89f4-d6ff59b69185.json and https://artists.proofprofile.net/proofs/artist/7506a482-b620-4808-89f4-d6ff59b69185.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 0xede63c012e09c9fa36f5bff4bf26acaed1a507e3f786e12d029606e91f942a1d. 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/QZGWW2136432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fed43f39d6aeee669f57a4d990cbfacdc0dba5b5ee6be4fa644fdd36deeff4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZPJ32130136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0849d780ff129167237bc0e8c9e2738f309ac53a9b1e4b8ab1aeef2798620456. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:31:25Z), 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/IT5NC2300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff49d9f13cd79e627ad47313812b295221a1f7790eb51f4a4cd748b01b83ac9d. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZPJ32344686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416634ca5257dd757066c99b0d8df465971b2b036e138fba689107f3982502da. Chain 2 (Bitcoin): anchored in block 957552 (2026-07-11T10:04:42Z), 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/ITDD82400636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34863edb6516228df76b4b5f83ae7422385e68290ac7cbc3a21b2e363e69bb8e. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZPJ32428199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70875f0d6f81a9252c925d5c4fed6b913ded3c7925b878c21437fa414e5ec62. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T11:42:07Z), 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/QZPJ32428201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844084e7354c3e8516fff44ee495cb8f71e9cd2ddb0005a885930daf5da57b92. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T23:01:02Z), 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/QZPJ32428202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e53b62fad090e5c8a003dfe24c00c4e59d5b9750867259f5efe4f9880c1302. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/QZPJ32428206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f149e50df201f2b79dfd7ecf348e4d57ed34ec85ce2d29088ea889e60fed5c7. 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/QZPJ32428207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9a55edefaec1b2547a8d245ce615ab84218d3ae667fbdd0c8617b45c333f6b. 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/QZPJ32428208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a2bc5fd6fb237924d206c4cbb83693861acfa7e1715dccc7a8274048ce2dae. 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/QZPJ32428211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24d42518bd9a71d2300994bcd12731983d6212a4d2c291eb8599dd5c60939fd1. 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/QZPJ32428212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2bd98112ea6792b4143d5bc8cbbed023abd68b604f3adbb6cded57a28531b1. 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/QZPJ32428213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af46186d4aeb4e2e4d336fc5ecebf67029c264fb45cf6be0c8fa3fe7476ca15. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:04:16Z), 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/QZPJ32428214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780fa898a4c75a73d7026ae8c4d963f891a9c0df5d86a3c8efff159e654b65ed. Chain 2 (Bitcoin): anchored in block 957556 (2026-07-11T11:14:07Z), 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/QZPJ32444792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6931f476942d870c6e5d16a6b08006b7257bf4f07f9558da756c663b78f7a0. 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/QZPJ32451631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1f0d292675c50fe6bbd9ea1447f67257de9327b047b540df56dee6ea1edfb1. 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/QZPJ32451634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed242e91415c56b5c7f06e001d4538ddf8fab2916b2a7f345c3f786b4d609c13. 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/QZPJ32451635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7581710df27bafa5a62a04891bddc755e7fe56ea00d9da9d306f09cef648ab. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/QZPJ32451636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c84b1a9a7b1919927f21af7e76acd5126f6d1ebcf6e4f01285ea019586f780d. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZPJ32451637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4894ff7bedc4c87f20b431e43139d4e4d1338a74f4f5ba1b7d0646a5c2768e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZPJ32451638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af7c92a03e204109f2c31814ec0260220207370deb73af8239337b80b35570a. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZPJ32451640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1470ea7c50cbfc42b9306d417a0420d26d817b5f6c498106b7e30bf59cacd7. 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/IT5NC2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf486f425e5a168fa7d8c3a2b5d3ff3da5f9edbbb855167d9c63a591ed6367616. 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/QZPJ32485636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9ab52907785f813ba732c1c9aa0094fdeebd22d1bc92141cb1e98400bdf317. 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/QZPJ32485637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614af965b78ba3e204a8792b086bdd4ec629909dcce753e46732f10c05d1063f. 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/QZPJ32485638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2599d28c77de2c4c317d3bcf240aadf412c3b73e3c0d5a0a7fae1afbc8adc2bb. 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/QZPJ32485640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45388a7401c766a06f6e781e537bebf8e834ea4b98d581dd815c70b58d7f7bea. 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/QZPJ32485644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb26852e379b75cb8b4bc498d56851c5a8558b54d8ac0833de852de8882e8a6b. 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/QZPJ32485645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1469fc7852b779ba3cc347eea4b18180eb7517350647cc2c54e29ec5f0ce7871. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-19T22:26:49Z), 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/QZPJ32485646.