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 0xff75b07e33d5741ede468ce638dccaa02497fb6a82c649b08159934cde966042. 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/dba53d69-42e5-4be9-bbfc-c632ab06b14b.json and https://artists.proofprofile.net/proofs/artist/dba53d69-42e5-4be9-bbfc-c632ab06b14b.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 0xb11cd2caea72f1ea79271ad00c80a4819d8a3a425c373c6850ce981430b51098. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZK6K2073776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e1c8a52aaf3e0a2cfe8e5464dc860060f2e22e30be0a1480d1708836e9b4c9. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T11:34:36Z), 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/QZK6K2073781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x806887eab17b4ce78d3d96c6ff16d3d7a93421697ba7455237fefe5296e26e88. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZK6K2073783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d93b4b33c48a938c31107f67f2bee981edb98291cb8d309b2caa9494f3c6bde. 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/QZMER2026316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d981b460ee04c37d8e6a31a7c1e224fc8c42767be693b0273614062834eae4. 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/QZES52166482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56bc2707e4ad88acb9a63c40263b87caefcb3ff5d51f1f4f42b68ebbe73b8ea8. 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/QZES52151208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f47b1adfee6265c2f967498b08b2d169a444ce65a6fca845497c0a599a4b1e. 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/QZES52151210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b351be5bdbb1445d52b3c66184c261681351bdaf41ea56a409d7b372ac8d0c3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZES52151211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddfc6df9b585e8a1db8f0f6970c4dab1ab625b0855118556a5358607aacdf68. 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/QZHN62149434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a216a8ac74d8e30f2e0bc18dc6629a5a3835e5d52580c1a1b2139529943a27. 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/QZFYZ2235806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4c5e15b2d419d85ccad8bf5888c4e5567034c44a3062b0a0a3565592a45429. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZFYZ2235808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8958cbff07981825c809177dcc80235be002198b7d87fa3e8916ecf165c9bc. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZFYZ2235812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d7469e270f25d27cde2044be3a27a3a87100a918bafd555866d9cce139ac18. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:06:16Z), 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/QZFYZ2235813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e621546171d757e4850e35f5bedbd3afc7735bac2cbddd23d4ca189d63170b4. 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/QZFYZ2235814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29019f4d0321f27c4c4a82fe8cbae3ec108bbdd8feaed7b80165da90c45c0e2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZTB22217229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18dbfa6b76c2ea7ad36533ee5fa48b4cc5b4526bfec363319591d7a5e13eef42. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:24:35Z), 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/QZMEM2391350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5545073c59d6773fec7ed618aaa599eff92503c23d9698c3bda3a9903718cc51. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZTBE2367983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42633a4d820c92ae75bf036657d42a1b9c19174c5048692468c1583b3dc4c14e. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/QZHN62480045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c89fb60ae7fc2c89dfe3601b165464134b5c23d153a011093faac2f7cbab7f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:42:26Z), 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/QZHN62480046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc020d3aef358cde0e735d64fb9d152727a036a278a3677c8e0570f99e320b0a9. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:51:59Z), 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/QZHN62480048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f7810d002804625a20f27b9d16c1fa0a835c535f3e1879d6566960b514b5de. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZK6J2520334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4655c603ab90d834f48e5f7eaf25423cfc33fd5137c2c14724f9a99226f1c09. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:20:54Z), 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/QZNWW2512492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574105e9ea2acb696bf12d4c150503582d6bed08895b82175c084bcfd3619817. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QZNWW2512493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8819b0ccbc9723b3bec490430e44df7595319dd1de8d503b4afd6ab8e36f4480. 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/QZNWW2512494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1f54016dad860f182e5e64110450109bcb3af0a9a9631276a1fadbc0424212. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNWW2512495.