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 0x7e82ba50eb76be3fa0e61c4d542c64522cc1ed04a7c3dbee7a2571729ef4f0de. 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/60c0c570-d261-40b6-b725-c6fce3289058.json and https://artists.proofprofile.net/proofs/artist/60c0c570-d261-40b6-b725-c6fce3289058.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 0xd3383aad1b04d1554d6ea6ce3ae54b33424b58b70ed92664e75aac8fa39b7f15. 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/FRX762467669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e3e62c46f3fff04f63f521423b5cb09541e31c5aa66e89c2b3bf8cb130cc8b2. 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/FRX762467670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f265aa1c162db6fcee19de7fe9bf58e4e0a4047b62c08abebacbe147c8eebd. 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/FRX762467672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a092a045d0ccd0fb4776081b285fa1abe0dca28020ceb51cd3517100ee8cc75. 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/FRX762467677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddb7b2e66ffc4e0132ccbe811a0e3cf0ae9fbc323f0b77b603c86059dd0f190. 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/FRX762467682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02135b4e493758ff8c768a01298e48d239c1af7988875bd7eaf0a2b6ecb20529. 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/FR59R1986828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8b8d27842d71bb4553e45da9e95581fb243aebda2dd9d476306074aeb5350b. 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/FRX201828122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e51b15c2f85dccfe6ca7558cd7d939898af7a8301dfd70ab28c14c5d3cd6e1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX201828123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfce7211111c193f2215e8b05f7766253395fe745c8633f871e10e2183ce19fd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX201828124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee4ac7c34f7fc2ca75837374d21b2869e7478a72585b9a24d6daa44515e0655. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRX201828125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974c9d859797f1974af5c1412908a304437987010e970918b3346cb1d2cef073. 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/FRX201828126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d6cb8ec4a63828b519fd6e0b57a2be2c66afc1c4cd2972580347ffcd33914e. 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/FRX201828127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90a30f7eacd6ae6da0d7815451839e46a29c831e7d04b38dffe9b3300db9ee67. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX201828129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8f0b17a2aa3c3c3bfd58f8473ee3c08202a1a69c23f796b61ba440fecae87c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FRX201828130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c02e1f6c09fbaedb18c96a3c0cecd83ecf529e4b29e49a397e8f9968566b3c2. 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/FRX201828132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97130caef5efbd3a5024b019d10b214054f49ef142e276fda725af192b73f691. 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/FRX201828133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2872228943c510c66e80d8aa65436d3414b58ea7db4975e2a8b6bb4acc4eab. 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/FRX201837628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47ca253cd9353cf2c004627427b2c033d156f354cc0fcd87cca31396ab8fe48. 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/FRX201837629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47865b8afcb27bae12449721b5e75d9f033ec2afce95717004c4146f172cd3fc. 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/FRX201837632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96dc35d61e1224564afc5d7f48125fdfde254f88d8085e609b0bdddb2a62a744. 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/FRX201837635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3704780cedb4806127395b1090eabe0db19944243613ce598cbf2a6ddd58c0. 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/FRX201837642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdfce5aad58360d7a80f336c158f7eb2542693c0eb0800edac303cd6396ce97. 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/FR6V81269822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6e35b508d5eea5c5ade9bcf85b4236f46f78c05b5bcb801a49db6e6d8077b5. 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/FR6V81269829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3383aad1b04d1554d6ea6ce3ae54b33424b58b70ed92664e75aac8fa39b7f15. 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/FRX762467669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7f2827922a0e0e5cfa8cb934469921e055857cd2d9abada5549a5bc609fba3. 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/FRX282231914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf252199d2cfbe522bfef4b4874fe98df1315097c82ba74ebe104ce35a65d6952. 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/FRX872341121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716ee2856d54cc11c16497c8edde68e84bac6b7024b3bf37bacef994b5499d16. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX872341095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd450b49972044631c0167ab80df4780c605d4aae7babf53f25b262604d93fe13. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRX282222106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9488167e8a8becaafe2acf9a87bb256df3646c774127e0e4ccc4d48b2ff97b1. 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/FRX282217067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706efbae5430e9f7fd59f9eccfb28807049a6611d377e874c2c259c8ea9fbaf4. 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/FRX452084792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefac8b1e0f16bff0316d4b11f4d956fc678042062e6ca2489bdfb80fea1755ce. 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/FRX452084793.