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 0xd61914d7445bc8be23d46d3aa1c3971c7f6431b51b6b9f8021caeab2c9b59a1c. 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/634b47b4-09aa-4197-996f-039bade752a9.json and https://artists.proofprofile.net/proofs/artist/634b47b4-09aa-4197-996f-039bade752a9.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 0x6586107df6a315aae5724eb42f72bfc5be591ba33558f6c6dd89e89933788833. 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/ES7431604453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9bc45d2ea728a82223f6e78082f5d52fa816c407889d76f16bd2fa2c390942. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/ES7431604451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3235b6642631131d7fa9d3aabd042afd683f90681691cd1c21a831f324961af5. 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/ES7431604457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514f233118e4b9913102b39bc0d8fc50c3c7b712e292ff66c8563aec350c29cf. 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/ES7431604460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2060cf4b24273beebc2ea57fda25d7940f443715b1d22cae9c879cc847940f3. 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/ES7431604461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2bbfd28d42a1dbbd90c191cead189cc22cd1e37bd4632421c34da10ab3326f. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ES7431604463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19db60f3e9e9146e7e41a6032267478d4776430eeb38ad6722a5e8bb5324fc5. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/ES7431604471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bd2da600e367197a2269e9cbeed2de9307c20c4cc848e25a46ce0e6dd521d7. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBLPF0098258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fce8df07374c0a80ec7b3db78870df8233c59e0193a81b9d714e68c34d60363. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBLPF0106990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6301bed2db951ef54f5bef60bd76ef488ae971fefa0d4cb91b212763046c6439. 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/GBLPF0129722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969003d3ab82073ecd4bdeac2d0c42361494a6f5e66033b49b024ffb2b297c61. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/GBLPF0129726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7698e8b475f934e1ae466899ccdfae37c3a5eb1f9b46c1fd7275050880dacca7. 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/GBLPF0138531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f70ff8258edf50d804ebf0585530d54135e633ac2ca66bfc34f335c1e7d2e7. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/GBLPF0218485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3464793790507a5365e5cb6c5be247596f18c80b6aedf63e7e953da47be1e3eb. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/GBLPF0218490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc2b6813fb85946849973e7fc7fa3c523ba57f2d6e3facf104c1e24ff32eb16f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/GBLPF0218494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1354aaf8a1812ee09114ffb0e8c1573e2770eb58d59585d04fa2ef941c273561. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:49:28Z), 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/GBLPF0225092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5f03bf0d7e8f76ed2cb836dfadff8e03dc588611dfe746a14dec46f0cb8520e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBLPF0235008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cfd1269f05a0e92a5a68c6bb7ada471b991437c2de92191e5afaa51a609a60. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBLPF0241651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adfa3a515457e3427fcc1f4863eb83e9a2dc9e9e0146a2da5610d800ee4e323. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/GBLPF6670248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9198cd37c8b5e6d801718c09b25b9a3879bf901f1c6e8bdb198f84a2a60e6d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLPF6670254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc878af4df9fde008208293f29d3c6ae5301762692d147b3702418e50d7dde15d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:26:30Z), 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/GBLPF6729780.
My sails are set (From the Netflix series "One piece")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336a6b8941cc740028d58105cfe34c8cf19b41ed305c4a5c1f076bf4ebfea4fd. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/GBLPF6810213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410984b03293ddc8517cb84c99fcf4f4dbbbc2b4b07b32cac238ebe5d2c15754. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:53:38Z), 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/GBLPF6810218.