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 0x4129ef73a9505b93632ea72b59c1cf07887496e143e81276ed76850a9b156832. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5747fe82-a557-4466-8ab3-ed47a5d0cdf9.json and https://artists.proofprofile.net/proofs/artist/5747fe82-a557-4466-8ab3-ed47a5d0cdf9.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 0x95aa91d3bf2970ca942bff4d3b022b1ea441cb5fab53d3a53be1ab3b2280ad0f. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEKB71456657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb4ec2602302524d4512f21c6f3f64358238aa3c7b554dc951b819f0c971f90. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/DEKB71456658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffe8e11f9a80ca372b3dd9e940c4541c974e2228cd06ce8101441f75ad67474. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/DEKB71531907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bbcc109b1516975de5929752fd935069ed2d2e41e990cfecc25048d1a94f4a. 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/DEY471881875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e2533586cabb2adbc4b99f6a84cac1f73645ec1b11de3ccb3e3863d357c0a3. 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/DEY471881876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e935e86fa28ae285206dc0ed16152d37fab4f077027369dff2631e88c41432. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEY471980136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85005a2f585cad72d9a1cfd7b1ef53fcf2f80e6f115be33c9aa67bd065724d6. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/DEY472080314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a90e9b6b497e7539adeac3f240a7f8b895fe2a851146e5da1c83f58dd72049. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEY472084295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c364ba3a12aeb49546055f0a9e04d3f8eada381e6a129b65a90813ea3cdd375. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/DEY472084296.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9469b64505b2b0e9b4214a0fe24b62a902ce245e688fd8673327b0988513bdaf. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DEY472086237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1561af0b7b72cfe12731f5a22e8b48a88bd12ecafeaf0241d0289358a9bd52b4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DEY472070146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80809e37a8c322f4e511dbf56ae4d1aa96e6c3c47fe50c102780454c1ff168f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEY472171919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3209873a40fc314391d1bb260e1b259c60e80ff69c273d9e915e12b370708cb1. 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/DEY472173498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefab58d12cc6df5ce80bc3670b2ccdba764b55a66564e65dc2ed946b77f9a2b. 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/DEY472175270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3472405f27e8c160edd1879372263f73e697cef454acd716d20a4848ad6ef3d. 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/DEY472272587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3ad42a0d40c35e4ea2d3b536f91af05cb1ce4392832b50ec2a199611e73d30. 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/DEY472273768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd889c4161e14a9c03c0b099ebbcaab7ae8921e96e8ca7ec6fb32904d5cdcbae. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/DEY472277675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8be736923be97c089c5a9b282baae11fe68058723331e2397cfb2631704373. 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/DEY472370086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1347fec2b29981c29031d0b59e6bdba9ec65ce939fbc9ab7698f4bb5181f2ac5. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEH741600824.