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 0xa4e7b24640aeb935aeba297260a54b4236b8b039df097c56b4acd7ae9f7cdb0d. 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/205d139e-28f6-43b7-b6c9-ae4506307699.json and https://artists.proofprofile.net/proofs/artist/205d139e-28f6-43b7-b6c9-ae4506307699.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 0x583ef80e9b73dfeab0e3bc4da97ea6e426b8fb3527b9fe49e17120607635678d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BEIW12300139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479b424b482d3d34a2b9e426281b753aeee316727435d381e78e0b6ce0de2610. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/FRX762449164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f46db30a3bd5147a196d68c48acbe8fcd2233d4b18d08c4bf382d008e292f7. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX762449165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80b0a420ba8c79998c11f5c58f08c315ec1834c48b5ac10daef3da55637fc51. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBRKQ2407120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181b75ec306a55a65301559a4ed27f9dad0c353ecd05f99f02031b82b48aef27. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZZ8B2396469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9908ccc71b95bf1f074feb53b72ec5937801f23da869499c7df2146b0cbad2db. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NL5WB2300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76931c46fda14af16e8173b4e331827d9321b539ad8d0925291832138c360a0b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CH7812347543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cf9ab2338c24d5c2dfb4fc2114be53bf28b360f2f7f4f11a7aa0cb20f1b968. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRR642201875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281095faaf7ba7da2152876b9951b393df07fec4baa96ecd75657a4a7caf52c6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BCCNG2200379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e270047379d4b69ccf6f907d8ce2f2aab590c227950c8ab179bc7795438906b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/MXC242200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e35260676fd0055dc2f276a5748f0d0990bc86cf31f7d6c7ebeb8a86137401. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMBZ92293294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a22a6f4a75cf927b5037d103cee6438798fd57773cedbd644da7f9ace6f88f0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRR642201224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7e127b05e4e28652c1cc8cefd026062c72be8201c252c0275ebcc7d9b5e9c4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRR642201205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72a08bc1792c2eced80c708dfd7140450eb811b2e8becb4f082c3a119d4e1ad. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/NLT2H2200283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6625834b97b4e7741b02eeff6bf71ba5da90407afe390268a09783aa53b190ff. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ATEK02277028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c16a6920a5f790b775468be4f82a99140beee0dd8eb516cdcbe74994886462. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBSMU8655313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff9620394963ec394acbbb8f8132a281331d2cf4feb044a07c4329561c31c19. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CAQOI2408146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2115f28fd686b62ff84598db74eb483e5d015a2f70cd26a73db75085b0d3328b. 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/USA2P2510404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4805cfe6e9b2bceeab9151ed88b0f245b5102faba956ae5c75392c181c16f3d9. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/BEIW12500139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef270b7a9ff3dd0a95e667efb8c90a098889a34465f6212a8a2a26fa9d723b6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BEIW12500136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a571cde439daa9185be6e2f270722f7e816ea6e58b0884267beb6a6b235fa4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CH3132500078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d382e29f859b310f1955fdb2275d32da6c567f066d397a44b4708eeb5a21e8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CH7812414872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504825bf06ae656e60ff9366159caef7d4bc6c83f1e875efca05aca0d9d8f02d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CH7812414873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f28fb550fde80a5f78d7d699b766e1e10e71caba7c3b14323b889d302feb5cb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CH7812416243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde24621ae6e39f55d0ace83399c9049adb696e45db3454ffa00d7f9f89abbc80. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6HN2470636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf80b0a420ba8c79998c11f5c58f08c315ec1834c48b5ac10daef3da55637fc51. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBRKQ2407120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66cf9ab2338c24d5c2dfb4fc2114be53bf28b360f2f7f4f11a7aa0cb20f1b968. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRR642201875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a22a6f4a75cf927b5037d103cee6438798fd57773cedbd644da7f9ace6f88f0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FRR642201224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d7e127b05e4e28652c1cc8cefd026062c72be8201c252c0275ebcc7d9b5e9c4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FRR642201205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281095faaf7ba7da2152876b9951b393df07fec4baa96ecd75657a4a7caf52c6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BCCNG2200379.