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 0xc18c63c818c29f3dbf8b81d8be91c9ab26fdb9fda33cab4190d8b4c553f2f46c. 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/23046385-0064-49ee-8594-cc8acab655d0.json and https://artists.proofprofile.net/proofs/artist/23046385-0064-49ee-8594-cc8acab655d0.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 0x4d6c68d6ea8e84d93b722abe0432630c8c16a8542e8acd2de81d51c42342e14e. 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/DELJ81815585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1efbe2b349a7ea0d7c7ae60536a4dac94cc76f75ed548f29c13d9dbf3ed9b12. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DELJ81815586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4d3035f17187ecf78348d8d68f7e85c8bf188552d41ecaf5ff54ac5fbd59a2. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/DELJ81815587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd3ff8bf4839c0f405381787cf47fecf5c5c392cf5786da438c0ba930416152. 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/DELJ81815589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917bf8bb7bdb9393807897dacdb92f9008acae24725c2f395a784d6dd6cc5ab1. 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/DELJ81815590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2410c1e8b07f26f420e8ccba4614d038934f41e7fdc6d1b4377828c06dac5a1f. 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/DELJ81815591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91337d2e9d7db8418d25f6590955db90ccdede0c1c0a3fa804e21ab6e5beff14. 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/DELJ81815592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3824e0562250293ed7e06420d6a08f913cdc6f509f6258d8cabb12aa36f352. 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/USDHM1901375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c88cfec9d24d5396fc91b5558db97921dbbaea389b1eb22f52e09610f77b8a4. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:56:28Z), 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/DEZC62037892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79da8ab316d80334393b4ce128a53a206286f6a056684e9fc7a3fe1747a8c6b0. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/DEZC62037893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf98d86e69ca7ec392403204ac01a7167b0ba258121f1a31bc31d348be67a4a. 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/DEZC62037894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf5a65ddd686c2bdad47366eb914e623f29ca5a43096261d381253a5f867b8a. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/DEZC62037896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe19d8d5acce4f9236f472c06dd5653c787b941393ff8c8697760b0030dbddc5. 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/DEZC62037898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfeaf2eb8f7ee1e07e658817eee95180b91a0846ad523d0d8519f5031eec5c8. 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/DEZC62037900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ffe2726c56d121fb192c2d40861f402c83c0277eb1ebf8f34b139c982e6118. 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/DEZC62037901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1041caa351000f6b1a13cd2b8ab03868f63ef481762ebe4ec9c9be30fd62dffe. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:45:58Z), 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/DEZC62103510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b77113b32c12d2ea9e9be9b055fa3fa92ac057c309c4be4702917bf67f0305. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEZC62103511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45bef73ef5b76ff51da1385cf8e1b6bbe6e7fa78dd0452cc18150df4d81c273. 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/DEZC62103513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17a413c66afdf095a9abb4a9295a7c6eb7b778a769ac0cbd6ad37c00093249b. 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/DEZC62103514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22306aa2983736fae85b8ca6e92efdbf57117e6d7d10d51af689dcfc47839264. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:09:44Z), 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/DEZC62103515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9390bfdfb56d573a67d350b92cbd92833b17a7c0e662a555368575a55f349df5. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:27:56Z), 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/DEZC62103519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a680fa29a5e4488c7ecf32f6fcaefeae98a64ee0251c0c2f7605366d3b9eac. 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/DEZC62103520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccdaa927719a1d1317c5e2781963d786ab5dd992a7fd214e860db9b2f45f8522. 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/QZZ7X2442956.