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 0xc817375bda8593b4085ea790bd5bb1af894cae9890720ab1d2c59a0f42b423e0. 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/a4af647d-5833-4ab5-ac56-7bddefee2dca.json and https://artists.proofprofile.net/proofs/artist/a4af647d-5833-4ab5-ac56-7bddefee2dca.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 0x3e093d52e6032f7a2242f3c1fe625b3571a94279740ee8cbc2c1eddd5bc220a5. 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/US7VG1701134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9985eb7bb22adc51ca794774eca21a4025a1968c6f902d35783e9270614d3ff. 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/US7VG1701139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad31d38650c985c8f4f9737488a118f335948cfe6eec2c5a4d9dd5ef96411985. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/US7VG1701146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd1285d61673333d10fd35810cf9fe09a9520eaa627a9028c41c70ad684ee31. 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/QMXDC1100185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37b675a97b2b23040c10be3d017a90263d0fb39d7efcfb95e2399be6648426af. 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/QMXDC1100187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb89696c9438e645c66ba2789ca1d9819a23000b887ea125d78c22ed1cf1da19. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:05:39Z), 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/QMXDC1100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404ec7cb3ab2b6219f3d8657d62f71e13effd44e1158542840e0d8f28ad7df72. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QMXDC1100200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x940dffa7f8d9230b258e330b43d457a3ccb2d2b594c4b55f30ada36f45dc146c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QMXDC1100201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15fd1bfc3f7e271bf856b4521b957969047e8f54f0317b64ca346fdf7c1c2195. 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/QMXDC1100203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2685015bf38999a537a9d5c43329475a1cf028293ccd68a08767a9bf9f1cdbfb. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QMXDC1100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa089c986524db3fa08c4c7522c98ad491000ca5154f7c140f15a4b292739810a. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:39:10Z), 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/QMXDC1100054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24c99b2b278aba6c547ca212217500dd44e8ca1bfbb6d732acb7d90d971a2a9. 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/QMXDC1100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4936edb411999ba64de15add2504e04cacaa8c88d09d5c2282d47cb5a59ca60. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/QMXDC1100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f588cf07706fd7d77b7f666751f8843818eba14105076e09b47e48cee849106. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-20T22:01:05Z), 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/QMXDC1100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9f8dedefb6f5302a6da207022dea6b44de7178e9876b556bb1a621951c6c2cb. 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/QMXDC1100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4fac3024d7bcd7f7d3cb9953881b73d3162bbd37e6cfe174c608200717b08f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USCGJ1741557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc339ac20b5bd3b99c0c1722251d4622bb3451c79ce18d82b7c6b33f3399b2d23. 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/USCGJ1741564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ea41725c2dc8cad0fcbf0970dbbaa622968ee931a58946ba00e8a2ed31fb04. 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/QZGLS2434815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad14758042baea88f5f779b807774bb4d2a5a20153d755d29ead5fd9c8b2acd. 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/QZGLS2443434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd5baf84928d7943252b20fba2bd6305b4a48098cdf2f1cd3d8c146e83aa007. 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/QZGLS2443438.