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 0x3c26ecf5a042a5ef0b691da25efe2997f81f4f7935eafc1039e491d74c2f1093. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b50fd5e4-4a90-42f0-acdb-4f2e65ff6de9.json and https://artists.proofprofile.net/proofs/artist/b50fd5e4-4a90-42f0-acdb-4f2e65ff6de9.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 0xfb9ed0b33f02751ad34beb7c9b263e047608d3dc6cb6ff611544a07240ffccc3. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GBLFP2579717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33939f81cf609f94207ea2d9f301c7a17be88a79f369872ee759bd2515b1968f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLFP2579718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11b697a2a50893d85c22fde6d37261516d09dfc73fe20a0280ce38091dcd556. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T08:35:00Z), 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/GBLFP2579719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bf2667edb955e74c3a6458de3bf106782f32a499c8098f5a92580d5e6c196e. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBLFP2579720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa426309c0dfd3f82eae6cb8ef0d459cbe787d8efb0166c91aacb3339ea1ef68d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBLFP2579721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a588a8df30219ab001b95d44db525317303c71608b5a81efaafee50b1d1c16. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/GBLFP2579723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb728e0feee73e0d425c47efc9f0749c15a8e027eb08edc82243f5045ed1de1. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/GBLFP2579724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f4d49aaa4e3074f5678ff5a3f7fd0a47304c33bea3a70b9b1b11d09e36d69f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLFP2579725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa54639cae00f3b343ab81f25e780ff5d8b7fca0e8e7ac92d11e45ae4cf026f9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBLFP2579726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36be6d14ec6e2b6a181e0542b7469215fdee0b68981aa1ccd2d22cf6ed0589f0. 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/GBLFP2579729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20bdd2b09b5e254d5fcb0099ef0bf95d45691d438e93f743b259f8a475b2355. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:33:25Z), 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/GBLFP2579730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4226994488cec1e34c24f16ec47558a6c436f818ffb9ed6a4f6744dbc5b9998e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:32:57Z), 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/GBLFP2579731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb629856cce06511ef9c2df06f28d90090a48c30b771cb20bb292addaf91e08af. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:41:01Z), 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/GBLFP2579732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11d4d751200d6cbc08e6d0a0697733e975f9a9a02984105fdbba68fdd30feb3. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:46:52Z), 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/GBLFP2579737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f760c222b71d64a01e0a229df361df4e45fb1fd158216c0aaadf3e520a1148. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:01:25Z), 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/GBLFP2579738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881c48ab2e559ff7fa204a3c2be21b805d1c395f7aa765f3f8b40fd64414b586. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBLFP2579739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87859670d4c8283cdfeafc4634d5149717fb456fcaa46906e592df03fa7a827b. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/GBLFP2579741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6330203a031b52d1ba335a5a87efa85444b70d2875ecaf1403dd521419db16. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBLFP2579742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39c8cb9d7bffbdec942843c29c125b90f8ade1f8b833ad3a333bc30aed97ff4. 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/GBLFP2579744.