3rd Secret is an American alternative rock supergroup formed in late 2021. It features members of the grunge bands Soundgarden, Nirvana, and Pearl Jam. The band's lineup includes bass guitarist/accor
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 0x8128dde9ecf8751c930842939005e95e3a5111edb6767f22bce25dccfa8e95dc. 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/419e335c-21ed-4aea-96c9-545d0beb07a2.json and https://artists.proofprofile.net/proofs/artist/419e335c-21ed-4aea-96c9-545d0beb07a2.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 0x02aca2868f0351189fdb0c9daefb2e8a1b4f980a6144deeadde13e95b8b9aa22. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAGD2286354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9a4077cc8b6796f9ce88de22bda622be30ca3e2251d3e24b5160b77008d477. 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/TCAGD2286368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97b22ecab87733c24d93a8820f66e485a360b1a6efdf2088475baabf31f2a16. 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/TCAGD2286372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6932a002aa6c070a0f2387bf74b15f7d07dc1f8a6577ca004749785edc332a7f. 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/TCAGD2286386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4d7bb163c94d1fe4b17c358ec6338f0e753aae0a8ae0f434bf9149934053dc. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/TCAGD2286445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c353b40af70fadbb504260e520dd91ad14ea547ce5d64c051d649b7b658e09. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAHE2399393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17db5452cd1c8f4f06411dda5361d4c386c0543cd5ceabad78808c3a5eef7018. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAHF2305533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19a5ec683b435a7e176afa95a7976ae9eb072efa731c8d99c011cf7ef44dcbd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/TCAHF2305544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5240af5938ed54abed4e15a02ebbd1a57c4d043c62ed13948f6b6a2a919f2d. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAHF2305838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b3cc0508b797e7ae44cc7c2320fbb28a3490e20025dc33c19836521773406b. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAHF2305855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50987d5a9a964473967ca08d240422e3d0f940770a327f5eee5c65d2518399ab. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAHF2305867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f57586620e2b0583eee1c969659eb6f5ccfe9d7785460c387e5169572ff1794. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAHF2305871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2a1d99d87d46ead4b4fbe873169c1874e74ce4e8fbd6bd5af44b13991c87af. 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/TCAHF2305878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb98ed2961916ed6be7e18eae1e12cf144d11e71fd0ce6e76922f3e73f70939. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/TCAHF2305898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe59fc0eef04d2d8da4b4b9441690b3a530ef208749123f08f72c9967f7c926. 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/TCAHF2305991.