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 0x81e85a21b20f994086cdc4e006b19c6efd711ee842ecf9f87604434f8a99f74f. Chain 2 (Bitcoin): anchored in block 953600 (2026-06-14T06:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e4fa5a4-ce4f-4c4c-8c9a-0cc71f443c11.json and https://artists.proofprofile.net/proofs/artist/0e4fa5a4-ce4f-4c4c-8c9a-0cc71f443c11.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Half The World Awaits (Instrumental Version)
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 0x8c02a6fdeecf40c4478fba2b39dc659428e581fd6e3f586b947c41b919c37a82. 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/QZFZ32262321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaea74957650115174d9c736a7766b6296bfe529a41d92e98e2cb58dd8bffd48. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZK6P2266797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29a277ef167a27904fba540e9b969b6d50e8d1a642a81128771593dce3f44b3. 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/QZMEP2245210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaea74957650115174d9c736a7766b6296bfe529a41d92e98e2cb58dd8bffd48. 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/QZK6P2266797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc75dc1c4c096d7f3cf1c4c8f55981e41d7a87f37480c2ebd16846fce7520d6a. 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/QZMEP2245216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a20ea16cea7ae3de1be527fda06f9a6381e38b3da492b26836acc5d13902c2d. 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/QZTAX2469680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d51d4b6c86020ba7987d1b04096013931e558ad46fc69fae7353af80e70f8e. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZTAX2469681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6354fb6c821ccef5735652dd9c2d509d1b740ac9b0f18ad3dfa7786233da76. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTAX2469682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9e18430c34745d21815f4871f4c036797eb0f4aa6c9832f7502f15588eba70. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/QZHN42430452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf23874f37c48b4fa363a3931a627b0423d98f68f7a4ebbf12124711635aac29. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTAX2469683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad4b8a2e6c3bc6d0c520e41d5bddddcfb7208eb9785b01c9c61e97998792fb8. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZTAX2469684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375cf8e8fa8e9f4c5060ff2e56359c734dcf398b5502abdf82cd696b94a26748. 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/QZTAX2469685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103ba93468a3a2af0cde14c840342d75c80be7ef899711afd81840dbdd626ccf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTAX2469686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028bc74b2bda890f63415deec064b6e5e16f6f863466b28dda1b372e0f86bb5d. 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/QZTAX2469687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e47196361a2990221cd95799380114d3421beda18f76a27ca3e0aed08b16b66. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QZTAX2469688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3e5cdf781e52a528c18f5d93590a8d35dd0a6d9203dffc9fcf159934a88ff6. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZTAX2469689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc803fabc2176967d1ae4e010bd3b221421bab0251309c912f8b4222eca3bc03f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTAX2469690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a0d8dac2a6e7c7c0a5ec18a575e2544cc6f0435a2ff843597609e9cf1fc4d9. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZTAX2469691.