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 0x8d02d07fdf7f99e5d8304078d3fa94b1154e43bee941aac649caa2dd006d7fd5. 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/903d3d68-5af0-49f8-8b2a-6f8844c688dd.json and https://artists.proofprofile.net/proofs/artist/903d3d68-5af0-49f8-8b2a-6f8844c688dd.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 0xd792cea103417c703ffc03f6e8ea266623288ffd6610eecb136c926829c4d809. 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/SE5Q52003878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f629947901ad0e1043093724ab5662b2a8830cd2f3a0b8cebb524d7b3c18a0. 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/SE5Q52004082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe798e20545ac56b7046bc80b472a5bc477aac73b0316c1ac397118c8f1c26548. 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/SE5Q52003918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab6f20e579df26051c0d3e4b81e868d93ee8af11b591f793c8e97f762e5b2f7. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/SE5Q52101420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d56f5098b9f2468d6dcc54e4c0e9f730d843b74d3e8e424eeaa2ffbac718314. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:30:45Z), 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/SE5Q52100810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781fe652506b2e99efce6e79c64d7f62184d67d913f24ab18ee70d9abde94ea5. 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/SE5Q52104111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fbca112339cf6a7ba3d05dd76cc590b5071bbffb501e4b7e94e9c310d0de3f. 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/SE5Q52104110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19369e3b85c0c01fc92207bb62d00ad885031b326e69667ef9fa10699fc54501. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/SE5Q52104535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc9f154d1317bad48246a9055f1b87f4e7b786f69a967b12bb172d2ea68c606. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/SE5Q52201564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9cbe619552e44cd6eb939132e2909a1d50231ae47e9913d6f3b04407bab6d86. 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/SE5Q52201470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999876a539ab5b6d5e2884cbb670d95c8534cc8578dc8386817ae87ec29b725a. 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/SE5Q52201479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7030640d2de3062b9759f5e4681f96e6d1ed8a16e8f65b125a62d2e5c72dccf7. 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/SE5Q52202747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad3bb391084f0898a821337d089c8a2e282b32ee118dfc5bb81f16858c033a6. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/SE5Q52301730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bdb25ecac567bd6d66691a6bd8b76436b01b7958e5b0773ecd3abf82bec2e1. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/SE5Q52303408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebaeae411a3604af35affcdaf62d6036070ad95929f25c61528beca4643585e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SE5Q52303407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058a968423badaafbd8f47537dc6b110deb84f8bbd444c23a26cf0d52c4b768f. 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/SE5Q52304958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d84c8fbd5c04926e10769754404354f4b8d2a7293d1bc3a0111b926b057f85. 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/SE5Q52401229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3209aa60e6823de98c83681469e1fdbe8c66e1f8fd89ab1e84dff945d1ecd92a. 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/SE5Q52403091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5f00b8fe1f47d797a149635456068744380bcbb5a6d596433c73af31766e51. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/SE5Q52403092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb2cf8fed5bc8fcb6065d09a4ea12293467da2a8cc20ac9f0e70e7f4d7f6a5e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SE5Q52500633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe672de1c26cc1ec125858a38ea3c91261bf7b02c07fdd339c9b342548403b5b1. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:06:26Z), 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/SE5Q52500916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26aa804078ed2778f2220c989225d11a6d88949649434ac8f0ca48300341acde. 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/SE5Q52501835.