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 0xe91b83ca38fdc34d4f5e19a68036931d3946950692cebbe2c9483c9a811da4ae. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7286a1b9-25d4-40ed-9113-455def884f24.json and https://artists.proofprofile.net/proofs/artist/7286a1b9-25d4-40ed-9113-455def884f24.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 0xb6d7f95ccfc44594da0eba5def27707df1e7b9a66b64499089556eddc1bd3949. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QMEZE2085145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f8e225bb4dd6ecb2700d46171dcdfe829aa48bf99cd8cfce2387aeca762560c. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QMEZE2085151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8778b5c8dfdfdc18dea7adc5c5e210367e0ec97e0d47e8130ead5e9e74d66084. 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/QMEZE2085153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c1d5b9fcf031a91563c5ed002b5e945cfab57e2ba749137bf9fb2f4d6c64e8. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QMEZE2057313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77ee5284eb18d13416677565775f435d62d636af2b768c5b6c8dd915eebfee7. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QMEZE2057317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514867dd9b29e4dc658a7f26da41d18fa8974f9e2945e7ce25cbbf7354feff58. 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/QMEZE2057323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7981ce249018b063170f5953fc74b08315a73e3f85882be4e669f4b4662cc6d8. 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/QMEZE2057327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbfff70a09b0014057a0d64f70a4aa0e5707fdecd8ff0110e7fb574aa80f4be. 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/QMEZE2057329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d35ae554eab7ef725e7c29d069915f91847ba3c36d313393378e4ba7b11740. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QMEZE2057331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847747d5f2703c6c687a385d9ee79d70d13834360b318e147031a0ab41cf0cbe. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:05Z), 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/QMEZE2057333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9925c6b2e8d18f9d946d4102468d1dec856e9be3f7c2de97322127626d45d8. 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/QMEZE2057335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa270068b8b46ad1d2c89c2c88983dff08100b2b7c5d22f4b9a87602cc843cd2d. 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/QMEZE2057337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafc34c42da3a5c0c1a650f80e455cb6be9e6459fa0df781040fb523305b197f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:40:13Z), 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/QMEZE2030019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26584285fbdd518d891e2de59aa430272b7c6e0ee4889b8c9f5457908ba5a5d3. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QMEZE2030137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e52e3754821bfed1cb21d4f61b54f359dfa838748aa4b9d8ab523ba6b205c59. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:35Z), 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/QMEZE2030139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f47c117f17fb0a0d0ab6f1a17073aabe5d645b69f7f770ffdfb81dddd21b1c. 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/QMEZE2030143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5027a0f8e4f7d0816ff51821bf5e5ba77ba5e1a0331ce222a9743f7f213bd013. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QMEZE2030176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd539f3426d6410d27f3ed6ae9bb809b35db43977d7165ecd713f8faea28e4964. 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/QMEZE2030178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7deddce7b0ce827102ce98d9eb2478a88b92d0668eb57f11367167ebdc8c9f8a. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QMEZE2030179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8199e29599cada424586ca5531271323de7461cadc4b61e6b39ea8c37c344e0c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMEZE2030184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f5f0553af4e31a2ddfd9d9c9c39e0f1a50506b2ccef07a468b51252f3e71d7. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GX3Q92197484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ae249f41fc83cd2c65ff3b91cb517d09e7f2c3995def7b6dd698180f2005c1. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/GX3Q92197482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87af34a45e0e90ee1f4ebdc84038c76b1fecd0ed0f5ad2e82b32e23c2f3ee1e6. 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/GX3Q92317633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da85241d44d68f66571076685bf2d8203967809f6f9e4cad6916ae7dae12b8d. 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/GX3Q92317635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e4c440b12d28e64087e1b990e7a0dda5df0b0465e24b47fdbd161600bd70cc. 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/GX3Q92317636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc7662e4de6056dbd0352520c4fc39938f771e87751129ebf1f066f7d7b114d8. 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/GX3Q92317637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e162cd94f5259f2fa0596aba47c69df651f30d4d6e318761931b9788f8ee576. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/AR9IQ2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbcefa38fc5917d5a3006a206b71e30c5ac010d6ab292b7e3b92c4240ac1aa06. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/AR9IQ2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c2cec7d5ff11a43db999f7b41d9539f39d824dfab1ddede4176ae9a3bd6eef. 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/AR9IQ2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa531af53c062b3720cbc4aafa7fd781c58732c8f02413b01907fc691e11e3b58. 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/AR9IQ2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdef836febdf25964f9a92327c7a20a22b2b31dd57155d411d7ae384a04458ce. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/AR9IQ2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ec3d84c4efe642155c72531182d82dbdf58547d7bc6f78402ccce2bd706a6e. 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/AR9IQ2400006.