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 0xff059bfbb8880ea4673c7b41c7ba08bf5edcfa457155703a2e0a68f5ea80a184. 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/13b95ec3-f030-42b8-afca-07a04b72db9f.json and https://artists.proofprofile.net/proofs/artist/13b95ec3-f030-42b8-afca-07a04b72db9f.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 0x5f15c58ddafafb3a7be7f92220a9c419875930b6d1f5ddca135e38a52dba6add. 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/GBGLW2300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dde6cffe6aff54b4b54534276106375e3ba7cc229977ad4c5c8b81c5567a115. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/GBGLW2300075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96051996949d6f5a368b9c18b43e2426bbf5fc1e9508710fd40ed26cfef3f8a. 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/GBGLW2300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0748d99b4108431d10dca87ae90dbd93bb2d1cba4f354ada428dfa98a8cb837. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:17:50Z), 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/GBGLW2300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a9d2ceb4a3eca114e7607221e0b08b558026d866c8dcf6276e9f7a5b29ca15. 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/FRX762403159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b85d542f92bbcb44b3b2ee3a5c907730ee01461b4cbe3822f9f34122d049f0. 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/FRX762403163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac2b054e2520769552b9b13113a88bacf8ca1234aa672c27b3de783e8555a9b1. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FRX762403165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b65cfdef07b4e29d799d2d6a2eee90352a20a62489eba9cc1407717d053203. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:56:03Z), 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/FRX762403068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f4c55c9489add584e3d70ceab3280e44902b47569912820eafb37bb0da8baa. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FRX762403069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3171ea0b4b73854efd69426293137f6d3d1c6ada977edf5dc6c09d88302053ab. 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/FRX762403071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e8ce627c8f9a6949311eb3a0ebe83bdb45d6a94764e82a7958453ba413f7ba. 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/FRX762403073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217cca121271a6f9c5f2d8ba3cafbaed12c3abd694d0f56acb1077f89e135e27. 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/FRX762403076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa0b3254ee73fcee2184a7993de914c64e97900e5ece385bfebdf57cc5c4e39. 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/SGW502261843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1ca2f84fa439fbc35380c39a68bc5ebc4032726ed5cb4f28d3efe431884111. 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/SGW502232721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d420fb91c5efd5ddde76b2a837ce4beeea20034b667b91cf999ee0082338a9f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/SGW502281005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0ba9345722335f17803fb4bc74f166b046edef7243f98884af3a6a76704f66. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SGW502217010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cc42184e970f6ca9f3bec93239a4961268a01ddee8f6834b792f2923328eb4. 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/QZHNA2526704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb112db37c906a493bd052e056f31e8bfbe827d0193fde4cb92f5d9070932592b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZHNA2526705.