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 0x1ed8292ac22f0a84f31d3ddb5bc8144d9204b1fceb39c522945089647bf0ae35. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48802eea-42c7-4d4c-b825-a37988589a57.json and https://artists.proofprofile.net/proofs/artist/48802eea-42c7-4d4c-b825-a37988589a57.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 0xcd7f0188ed16cf163e6f8c465cf7442b7b198a8289e3e401a84a071e67351413. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZW9K2428419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b51191e3af8800aa04e18477bd4bca30b72c72dd62e10fa6a975e491f06d7f. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZW9K2428395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0506d2844eb83e5bf4933143d3fde5e5a8948e4054918050904cf7efa71a1a53. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:18:02Z), 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/QZW9K2428408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa48794652171110e01a362881208945e3277c8ad910eb60b6f53f37d6f938f7. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/QZW9K2428414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560a3ae9302427146c41d734faae98751be7c3b3c3e56ca18c057770221938d3. Chain 2 (Bitcoin): anchored in block 957711 (2026-07-12T13:56:57Z), 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/QZW9K2428435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb44d709d28f1c9c5cfcbb59d392cd97f18f85bf5bd1249e1ea3babf405631f84. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/QZW9K2428389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9227b579ee92904dccf33a260c738fd35826deb5e07e296dd016b6b029c7a7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:05:49Z), 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/QZW9K2428431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90bdbcb8dcfe5c65282481eb5b5c23fa50851f3c6b70a5c0879efa5eecc527c3. 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/QZW9K2428384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c57fde7710605419fd810ab4512300aa1d03b87e61eaa85789db2c2ba80958. 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/QZW9K2428390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5498956cd1f92fd2c9020106c857581b6dafceb323f6c8721bddc555f6265b10. 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/QZW9K2428416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7e29eaa9e63473b562e92acdbdf999082e78f15e631d749407626a4e29ed23. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/QZW9K2428410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a3e0b0af18686cbe06f29533559d605a1b352b01a78ea68221f123c9009268. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/QZW9K2428418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6e016e662050529159ef0f5df333ba9a19a4e9e34c7f87ba0fdc5dd5d149ad. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZW9K2428392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4badba64b7337649cef6370b80ec01eeabf75d9d126303efa178db64c4bede9. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:31:51Z), 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/QZW9K2428434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e6f8ee121511c017ecaa3b13ac640dd4d260d838d3ca5dcca515b05f31b6fe. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:34:03Z), 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/QZW9K2428415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bef03b5c442db66d19e51c789ba8a0f446204e13495e9c4bcf6a1212d8671c. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZW9K2428394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdf8c3d761f7f40d6dac254da847fb655cd34a703c056692cfbc10ebd2b4d31a. 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/QZW9K2428417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b652e83f0459e9c841866bb215544c62a9feb75cb5a685f16847bc3899c0d6. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:49:01Z), 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/QZW9K2428388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a148b0559679f317170fad046fdb4379288f0f0934ab95c6dfb52c47ad3b67. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZW9K2428385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695345923774ac0f6569eded462e2eb3b19a9afe46aae8d48c2426236c4cd50c. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/QZW9K2428420.