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 0x182a6ff401e0bfc9e073ab35d5a992f9ea2c2476d142e4b42e66aba9b840a884. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5155c72-7cce-4ad2-9b1c-24508f1fc752.json and https://artists.proofprofile.net/proofs/artist/d5155c72-7cce-4ad2-9b1c-24508f1fc752.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 0xcfef8e718d726a3d230e1798de998bb3ce699e46510d52de4f5f9f14d6834a3e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTAT2376862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccc20b69040eb71286ac57fbcee3d88f6bd0337d68d518d5b8d25494c7a0e7d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBVN32020002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9326b442ec37ace116f51304d2ff6f271b0bc4edd99ba2c7e2c4b4df40e68d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBVN32210001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36bb016795bd8dde30706de9b2f7f1ccff8d192bd47d5918497222fdcda49ad. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBVN32020001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccc20b69040eb71286ac57fbcee3d88f6bd0337d68d518d5b8d25494c7a0e7d. 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/GBVN32020002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80df6131e24bcc0285931dde832f827ce03ba63649058220a78af1a55b89ee76. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBVN32020003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec6fc84acf58ff6b3efd8f19c8213860f33b111a746cc30b820035c7a1b2c5a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBVN32020004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc11b309474819880e666d6ded5c4afc3a00718dc9e9234f4a040c8d69ef53a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBVN32020005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8de494e7d7430539d56c33521ec1896ee0844cc066c4f9dffee5f8aac309cb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBVN32020006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a8e121ddb045edae3f89f5a8fc4872c1e7334209addd29a06ce67a39e9b7c7. 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/GBVN32020007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c17b5795b488277b7cb06db35c24c44ef3df004c6d75319ac64e4d507618a1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBVN32020008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0760d9758d188445a5a086f4efcba5800bcbf34e6fce13bb6d006f479e0b4d62. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBVN32020010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb61b82fe8518d333a3fa16974c6276960dc3000d49e1aa3eda8cf44ab7770cf5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBVN32020011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd9d9317db03e81d476c79d65ee75ba91576df3ef26fc92849003b7d9c63f4c9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBVN32020012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb460c937f6505d79038ff8ea685378b88434305ceb425a481d7416743b614ca9. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/GBVN32310003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298a92107c485d849dc6a1f148a680ff3a3f5698727d0b5e0ea81b05aabba128. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/GBVN32310008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecad969792f6a6d41de48d944a873f8f768bb523f2cf5877e5277c270b7cb67c. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBVN32310010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5ff3f9be7ec03592421cbfdc0a84731566b1b284491c6cfc35989790c85700. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBVN32310012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14c6f4d03dec7168c1cb4797ec655ad0a0e607642919e9d3662162d28f0f8d1. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GBVN32310016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bc2ea2c9aef38f194f9c96cfd1eb07f4960f075028dadabf78f35bdee2a2b0. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/GBVN32310026.
I Told You I Was Trouble - Blendisms Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9677f5a68d9b03c58e56cdb866ca3a1d98221bcf2a9336139f4ad1f7136651. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBVN32310027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42818dabcc9f655277f1d2518416a16d7e6c5df93125b8d9528c728e0adb0a10. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBVN32310029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33161827ef9404c38478d2f885414a14786f81b33ae7013b04ed5e5a91167139. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBVN32140001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b7d81437d90a43bec12e43f9844eb5f7ba9ae34370e733b6ca55f2af3d4894. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBVN32140002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44d39affca340f31f08221c64aa05f9902ac97f35ae45632e96c39c197dde757. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBVN32140003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10974688ce50c260bc2ce47651f9b0ff4fc93d3d8190bf54e0defe2b550c2b9d. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBVN32140004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9389ca2f7bc54a86f04a31d2bfe4e702671a371533014866ab1300e158c384. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBVN32140005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8490e179a70bb8b7e4215d03ef88952c2957e780f8f0f4efe268ec3bd4d44d98. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBVN32140006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5517bd1ea138b02b2fdad3a31fdc61f2e966d10dfebb5250304e8ed129ed357. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBVN32140007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a38d3db157e63421ba353f6a72cc835f3347175769fdd2d1b98a158189a0b1. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GBVN32140008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715d2646bc1f3b673c0e1a548ece93710560c293a1cf5f0084dd129762704082. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBVN32140009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb436678d655d38b2d19422624b13e3fcbe246a61d8b57043d8e0c2cfbc007e2. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/GBVN31930001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d58d814f5d07bd410ea19b8ee7a779f34b82c7bca664c8e7a3c31b2193eaa4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBVN31930002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab59ad03b63cd8ea34f5e0247316fd7f2abbfb50ddf925dd1e95e2a754e02fc. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBVN31930003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fd648cb6e5bb51644510c0f7ed86104298901797d4787b1f5960fa6f988f22. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GBVN31930004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab64234d44765711f0ff64575b0f1dc420d94ccc2855a742ca657ab29e7b50ba. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBVN31930005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db3e8fa3cafb7600a119589a1c0653efc1d679e6721f07b03ff76e2bcc184e1. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBVN31930006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bb0db6c882824bac6dfc95abb6aa224c9a3ad4dc333bc1d8b9ab531bfd24b1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBVN31930007.