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 0xfc53224017a7e82b478e541be0762a6ccb8c460121c1951dfd8b6eeaf7105f05. 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/5f1f4465-7827-44c6-88e8-b5e8e0916033.json and https://artists.proofprofile.net/proofs/artist/5f1f4465-7827-44c6-88e8-b5e8e0916033.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 0xda9324edc3540428aeb5edd7f2a7a993cc0ffeba65791790241acdf97b50f69e. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/ES17E2401928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e7accc89a78ca9e5f0618bdc15dc851bdda985fd323edcd77114ace44b64b7. 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/ES17E2000631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84723d84149abebb3bf39674c849583ae9e677d4ca2a143b8270075847198661. 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/ES17E2100775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033f60736dcae59751c2f25716c0b20dd766215aa56a398b5591c89b73b6e2a0. 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/ES17E2100755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142bdaa16074b6e05223a33954283788cc2e14427209b4b4a3179e516ee290ae. 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/ES17E1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b26365608a453b4d9cc04cf5d7fef8a5d33fa9c85d37120cc11ce18af9eb71d. 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/ES17E2100778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6775c4a1de53398812b9a6bbcfd27544974f8af706e26e40497873a98743a74. 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/ES17E2100779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1984a935eccc6ff87e26cb67801f057c4c096d723a2dcae1801800140d94cca. 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/ES17E2100782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadf59e9d0b04b2b2bec4ddf810217b553aca0b9a062be7cafb354de42affc38. 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/ES17E2100783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b2c5372c7494186214b6e3c668b9e7ba7773cc19093ab3d24a1d4067ef1256. 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/ES17E2100784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd709f7a430de8d49e1e2655d57720722f0ffc150845ff2d453d63e15b9ae66. 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/ES5951605335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03ed30f16de0fe313cba6442b634a695ff9b636859d3702e95c3063c9667cee. 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/ES5951605336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6095be468cf126915957518cf7eeeb218707f63a7fbaf36d70cc9d81c9b2fa. 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/ES5951605337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5199155a0c7bb293a57aadba8bf5efa3d07b737b93187c5d0ffad87bd94cf481. 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/ES5951605338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74845d28123e99c5251551af4cd83b332272492de7f23c0c8aa2445b83764545. 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/ES5951605339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed6e60f14436bb9ee43637943411d2c7f06bc5abbe62000994783266b5eec06. 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/ES5951605340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232d54682182b5bd005c89d18f5135c4cdaf476cf135ef13f29ed8e2c9c3d5bd. 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/ES5951605342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b663e262bedca541bbf20da12822f17d4a1769982bea090a3b97cd420d9514a. 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/ES5951605344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db0140cb3aed4677e68508b570a7d7dea970569fe15760cff6f483f7d2182ab. 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/ES5951605345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90c39c419fcfbbc1fb95c73db63a92c37186e0c1ab90264830d69ccb9afb960. 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/ES5621300191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0730668540c0ea70dc7f1dda3ebb21773398c8a1e2ecb6ec89e0a40ead6abfd. 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/ES5621300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b806353291e5912b0562433d9fe02777d7aa13d56393ba6fc5a358cadd5fee. 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/ES5621300197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2893dadb6cbdd1bf92c79d73dbf2de0ace20918d5c4cf716330a19a31b7c2ce. 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/ES5621300198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef4e956a8e274e91a8650dafce8490167ee5f0fdaa1d63d0a0f2f6726e9d519. 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/ES5621300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8034becaa6d732a2146b96fc1de3f47e35e300104d8a1c702ce9d33578a5dc04. 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/ES5951103636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead07a7fa6b0ba012579a27e7d33863958f97d1f4849d6a085a88eb6891e7a41. 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/ES5951103643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033f60736dcae59751c2f25716c0b20dd766215aa56a398b5591c89b73b6e2a0. 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/ES17E2100755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e7accc89a78ca9e5f0618bdc15dc851bdda985fd323edcd77114ace44b64b7. 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/ES17E2000631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142bdaa16074b6e05223a33954283788cc2e14427209b4b4a3179e516ee290ae. 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/ES17E1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033f60736dcae59751c2f25716c0b20dd766215aa56a398b5591c89b73b6e2a0. 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/ES17E2100755.