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 0x3b309f33dd7e4643d534283f766380ad26968929f3b29023f702ceca89816f9a. 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/95056ca1-e228-4637-8997-74c99dbde3b6.json and https://artists.proofprofile.net/proofs/artist/95056ca1-e228-4637-8997-74c99dbde3b6.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 0xa1a51a6be82c41c3ce88434250e468b2435c98384c3071216f0d66a226972cb0. 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/GBLLT2030802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a296173b10f42fcfc5f041e0ca6aca336c557f0938b008bff522fae837f6a9. 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/SE5BU2107902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb3f2ccd3b340c97db8de82e455ca02be6253d602aa84e2539c09987adc4327. 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/GBLLT2104153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f439718dfb528891f517ca784cc517889ce18df19733611cab773e5e0bd88c3. 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/GBLLT2140847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fca96d4351e1c217a91fbdd236bb034d7731e554f8e41c33c251d2e49b8d2fd. 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/GBLLT2140848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612ba06c85557f7adfd7c90d76200b0146c0645b648f7c94445e5155cfb12207. 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/GBLLT2140865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bc7f3fc838ca95e46bb14ac6138cdf7af6ab795c539025e0d3ff949d8e5845. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GBLLT2140866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7320fd46298ab569a099bd924d3a0e30471a3ee74959b0867580b1d9d13a5932. 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/GBLLT2140869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f439718dfb528891f517ca784cc517889ce18df19733611cab773e5e0bd88c3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBLLT2140847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fca96d4351e1c217a91fbdd236bb034d7731e554f8e41c33c251d2e49b8d2fd. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GBLLT2140848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x612ba06c85557f7adfd7c90d76200b0146c0645b648f7c94445e5155cfb12207. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBLLT2140865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d41081ace53117d4e577efd5717c39f4a9dd837d51c47136a3d6a10fa056d9b. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/GBLLT2140867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87ad52a724da08b4462743c53977dadcfc5bb1e6ed2b064ad13b1b6cfd254898. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBLLT2140868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7320fd46298ab569a099bd924d3a0e30471a3ee74959b0867580b1d9d13a5932. 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/GBLLT2140869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45bbd03face9c5af0f701e6313f512f60f51b0fa8225b511032ed62cf10f9cd0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBLLT2205947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822aa7c3bf02ea74967bcdfbc3acd6c8abb616e4fbeaac5a2e71237258fb7c8d. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/GBLLT2216726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d83b5d322b6e57ae3dbdfaccdca72bb040fbcdec4d11543cfab490e9b1da80. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBLLT2217363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d83b5d322b6e57ae3dbdfaccdca72bb040fbcdec4d11543cfab490e9b1da80. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBLLT2217363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a3ce8a45d55f229b375598be59a67485c8c7803a07a52784618e134acf5f2f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/GBLLT2341858.