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 0x179ac0956f049b294324cb169536c218e1089b366311612ff8ba74c24741c48e. 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/888cf4d9-e82c-4d6d-bc10-6e6d2deb5b7c.json and https://artists.proofprofile.net/proofs/artist/888cf4d9-e82c-4d6d-bc10-6e6d2deb5b7c.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 0xc6e7501fe2f3421809799e2e38ce90a771b00f8d348d292788640d2cc3d61ffa. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RUA582001290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85686e808346a603d4e9dbba09afcc1369436bdc1030782d0d3f7f4524a2b25c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:40:30Z), 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/RUA582001612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf688e08aa8aefe1476b26ec81875bb43f7da24c5f3cfbb3b995a012db2fbf854. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/RUA582001878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a6de24abb0829c7450aab2dfe1ab65b4588215d1ebe7294bae8d5fa3113ef3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:55:40Z), 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/RUA582101399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5fa40055f5a261aa913915b83e171a7c6cc6f87ce8e2ee17544cfc396fcf56. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:44:37Z), 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/RUA582106286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811ed4e55be08f1d35ef26b318c3f9643e908d7ef1bb58e4606f68cae3688166. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:12:09Z), 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/RUA582107660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dac2ae082bd2ba38d3fae530ee68be914ff0e40ac481504f2fe93ac32178d4. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:51:29Z), 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/RUA322300322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc529efa24e2426ca577c43d71c2f4dd7c7702b7c7629d3a2715f00f34b0a61dd. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:28:13Z), 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/RUA322300323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298f43a0d1720717af5ad1a5b73fab8156221ce7b9b7dda600fb4345b10fcbe9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUAGV2403428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8562be50cc95607b9c1826a2c0e8977d11ffd89c4e7eaf8ad9d1052012ca2f0f. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/RUAGV2405358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886d0d3eab70861c8b82e795b9027ab4731cbc6f4dce977b0d4e2643b587d1a5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/RUAGV2405175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1defa6940a72c3f42162d20ae1d96938250ccbde921293de8e2ed4c37607fdae. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/RUAGV2405170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8562be50cc95607b9c1826a2c0e8977d11ffd89c4e7eaf8ad9d1052012ca2f0f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/RUAGV2405358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f891b737b8f6ef3063f33fe0f45633bced18bad2173b60bae708311cae3f0e. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/RUAGV2405172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0157ced65878f124c8f1d398e09b3616dbb944544dfb62bbfa191e08b64d9b15. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/RUAGV2405173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd0f5338d9c145e30cf657d2cfca8aafeaa88d503354682ef18342908aabd3b. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/RUAGV2405174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886d0d3eab70861c8b82e795b9027ab4731cbc6f4dce977b0d4e2643b587d1a5. 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/RUAGV2405175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1768506da638badcb39b07c2a2a44622f9520dda58611ef2fb615a34a46fdf9. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/RUAGV2405176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa1c2adc100914b4df548de6e89ee4d18113a50daf26db2c29c9f21cdd1d43be. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUAGV2405177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57a965be093f2dfc98943ee62f6fdef228ed54ed1073ec29af244dc018fb939. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/RUAGV2410684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcdc504ba20fe7addc5a6a87d15ad409470f205505b979bd90bc9157511ef7b. 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/RUAGV2304077.