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 0x133890df2afa9d55ebe8d0139795f6ec5f26247f444233400ef82fb10776452e. 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/a26e6dfb-e77f-4375-997c-12063acdae94.json and https://artists.proofprofile.net/proofs/artist/a26e6dfb-e77f-4375-997c-12063acdae94.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 0xbf96bfc12965f5393c4c1acf040afbc4e64fda2a0b4a69edeea67b48930207cf. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GBSMU5688402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd479220371316aa14d5549cb55f77e253a2b64018665928dcd94b2799b849022. 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/GBSMU5688404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c155a49e8d8d36db0b4c05ed61537099a10e32f7136c41ad5c4cf9cf559100. 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/GBSMU5688405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x711af32888251383bbe79098d1a67cb5aaaf39d9fd674e2f61c68dbf6443e10f. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBSMU5735935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x331e8b5d306f0ce600feaa7490dce39f89688d0108bd8b6321afd3a80bddf50a. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/GBSMU5688409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7308c82dfa3cdc2b922b31d5adad7c9e8fb6e5409d6b25d3a80f3472ace33c9a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:06:22Z), 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/GBSMU5688410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2c06f9265a4b74be51292d2da424e978d2fb50795e73ffa1b830ae9ee38750. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GBSMU5688411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed01b0cd1e2c68c7f555bbb29c1a99c88539dcbf4913af2fc5b039765531de71. 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/GBSMU5688541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826fdc5b79eba57bd727b34b2154810cb5087604c9bb267387c71ddf60c29ab2. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GBSMU5688544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24da47d5878c550086eca0b266f3363b90d907942f27ce4d53a751ee4e490265. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBSMU5688545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e5dfc37dae19890579d05a8b24dc43db620e27a040e993f06033a990d20cc8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBSMU5688549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f09c449e3529410620e8455eb76ea17d003c5c2a3ee149ec8ea7174029a7e16. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/GBSMU5688550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0eacc90f90a41eacafc10fbc5993b495eb7f486d8a5fe38a7770aaf7fdedaa. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBSMU5688313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d1365727694b21e48bd47f7cea424e35c1949134fe033d7009e13d269940df. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/GBSMU5688314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3aedf30b8437d00ef05c7c7490b37e23bc158d015a8485a2c5119368da1ad8a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBSMU5688319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a5edcfb7bb9ae299a7aa1d20ed2b67a1b25ce88ef15a15fbf36c4999604ee3. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/GBSMU5688321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77f9b86e45ae8461561cb2ab99bfb4e1bd1fccfdcb4eb2b6d453ed2146c293a. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GBSMU5688322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27da00ff8f21321076c62265b671d1cf0c1a4822a78221889340bfd346cca0d5. 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/GBSMU5688323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39808b80351021d9d8ba4a3467f492ed0693a47eab2d94dcd6c1b24c89f8ebb. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GBSMU9390120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa613ec6323201a1742ce8b6422affe7a5809391414485281a60c4f47fdc4950d. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GBSMU9390218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b271f056ed58c514c76bc31fbde00e9e61d6f02d1c1117725b68830ef9fbc5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:33Z), 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/GBSMU9392750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf8e04c8fc9c02bdb169ff465cc8ff515fcd2c0267274146ecd9260d5f29daf. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:25:24Z), 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/GBSMU9392751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce44cbac652464efbf24853836a35fc862d2118c43644e48683468ea7deb336a. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GBSMU9392827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19551b8c1ca7b9a0c8cb81c1189b5db84b85a4c82e67218ab6ae2c3cf910debf. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GBSMU9392828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd93fbf3299f06d49a8017a714c28d553d0e2a3c3a46c9dd437c4a745c9ca2ac9. 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/GBSMU9392979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f4e93d9cc05a64af49f57958545892390a12f9ac586c514af2a4143bd6a890. 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/GBSMU9392980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7789140aa06965245a591bdea4e04612120b49576225bf43813557dc3faa97. 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/GBSMU9393064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7b0d3d7f8a03a90bd8ff1acee259ed3075d934614957541b22fef470229561. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:09:15Z), 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/GBSMU9393066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c4c5be19c6f01ee530565538cacfcb72769e376477908844bcc7d3674d30a2c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GX4R52539631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49133224fcc2ebc43e65ee4728cf1801694b16a8afb496c1d0b291dd54d09a8f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GX4R52521244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6702368ed47c8061dc4f8ffd60b3104750c70ad97c5f1bfb67e67df8972cd72c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:50Z), 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/GX4R52554508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95c7da375e29301752eb6859190f22a07fc0067cf8992971a5714ac3cbd595c. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GX4R52515920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e4c807efddc3bdb64a24f55f60d3c3df68db15ad9abf0538072b2276a42bbd. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX4R52583556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9274821efc7d5d89463f16818204945ec23138f0638b37969dda3f34240d3910. 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/GX4R52597499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeacb06e5089011fd7481b83921adaa0fd13a08f11ad2c0ba24366557a43805f. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/GX4R52506072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641fa0da573d9a5fcf85dcb5102a384d9953fb315913c0338b9e6b72c223145a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GX4R52524162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84f8c381b74581a4fafee832ebf19ae2e5169a168442fcf7ebf7ea1119c2f38. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:38:41Z), 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/GX4R52555034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9155cd03f4b8e4b32f913fab690480b7b2399fd5eb9686307ea529b4ab92829. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:20:19Z), 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/GX4R52543479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff064387995235cd69b7f8900384db00da8f49266a49eed1b62490074bd77fee. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GX4R52553829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457b48839c7848bf1edbec1f8a6d423908aa4482db94f7a24705db948f5b6fc7. 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/GX4R52581485.