thumb|alt=Diagram of a head with symbols for different mental capacities inside it|The mind is responsible for phenomena like perception, thought, feeling, and action. The mind is that which thinks,
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15f45d9ad7811b56811b6c77d7619c64491347d33e7fb2d9d797197a8713a6e. 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/a2c060fc-94b4-4918-9ba6-ff6bd0ba13c0.json and https://artists.proofprofile.net/proofs/artist/a2c060fc-94b4-4918-9ba6-ff6bd0ba13c0.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2f66d81f1739d41c52faca8bcf403894304823886b32328dd41e9072ad9006. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAHZ2433754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55ce7800aa65b61e96731541966811698c72a98f1b3bf71f50ddfc54c1b3ed3. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZRP42482754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1e2af8400d332fa7ce46d7f377520ab85ed04d28afdd3c4c60c3a8cd8142d5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCAIO2437502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57db2de49ace8755ae78c05c6a28b12c1817fe06159437fd1eb20e41c60cfbb2. 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/TCAIS2438054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36fd87fa03b4ed23acfcc326ed42bf819cdf1b4daac6dbcae6e3c2c3e86d17e. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCAIT2428000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0199ec7e824164165861b6b9318e67f3e9f481463236327c494f84ddc95663a. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCAJD2431807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf0bc0e1b93fc6d118a7d50136e4baae59e2ec69e25634de1c8e88933ef0476. 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/TCAJE2533623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe2f92e1791d33aa85562de811e7f9e5ec9fd24ef8dc8cdd019d9dc5efd5405. 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/TCAJK2507813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd205a33dd9f635d2a580b27500d8f2a302f8f406803f5b3ebb02cba1f53acd0f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCAJK2581625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94fd4317523691cd885828d082f864e0cde2c7e487d8c9002af60685761290bb. 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/QZTAW2581341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe9776a8f6b27781c36a90ceb56fd9c5b0749de43cecb471f301ea2791f8ac0. 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/QZTAW2581342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb06c336f6620f857a5b163e5f30b8e3167cf71e86676e78f844b6e034dc6ac. 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/QZTAW2581343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046159aa2677fb8fde91f1600401c6aeb48a7b75e4caf85f16c7609641021f07. 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/QZTAZ2557589.