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 0xf0fe099f92c69cc5c6719c699ee067f2edf0629e6f9fcd86e06dd528d0972aaf. 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/1b093ce7-4dab-454d-a74f-e3ac751aa618.json and https://artists.proofprofile.net/proofs/artist/1b093ce7-4dab-454d-a74f-e3ac751aa618.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 0x45b4571c634963be10946137a43cb370c5f9e9e02ee3b0dc6dd371546b29fbb8. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/SE5Q51902221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3e1582edf06e7baee40a8a0a82bd8523bda06d9f3ff6dbd48566bf267d44fa. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/SE5Q52100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b30b1f78df7b61bb4fae4be3ede7f6ea3e25196149f527929c1d872d1df137a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE5Q52004156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a760d4a05733c78d206e6a385bf36fdd2b5777874bc267570ec5059e913b1e7. 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/SE5Q52200714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f877c97d43dc64f8d171f7d052cd77f4cb90017dbd5b3f456041c2e4577850. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/SE5Q52300538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dca95b43121f7542e90fcb84a9ff0ce087275b502f82556dc3b3761253205e5. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE5Q52300504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3311cb585e0c349dd401cea1b336d3ff3fb61bf0736e0a838350ffb549cc12. 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/SE5Q52301507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe026214a0b48d4581996a014d08ea4d22db9c545e55a3a5eacd651f7d681cd17. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/SE5Q52302779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8821c4b3042f63c1c156d4004992d320b033dd89a67644dd2378f522f9963bd. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/SE5Q52302942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4f0fddcaf9297bc1ae34120e72f86dcd1c6bf9346cfd1d8d2a8bdbe47d12c5. 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/SE5Q52304798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae15cb47528595cb3f2a565fe15e75742dfdb69f9a8ef59baafe041f77ce5e2. 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/SE5Q52400556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93211ec2892dfa9a7ca071fde1616f7eb56334052d849e1e488047338e43bda7. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/SE5Q52402738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6392d3c7686c3cdd7b4ebfb198dc3fba101af68367f0e279d0cd3827a7a0f30. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/SE5Q52402849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2b926ddc676b7659e5bac5e2fa86aa214b81237d6b5bda0659a3b2c5d42129. 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/SE5Q52402850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e8ed455b3b3cddf393e95a78e37cdabf2d3a3283356aa2cdf915292132c820. 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/SE5Q52404234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5d3677990335e028483acb2951ddacae6499185dafffdf7d5ac4b9410efaefd. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/SE5Q52404233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbe8a86477b033d25b898d5887d169cd23a0c5f54f7c25dfa547cbc19e400f2. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/SE5Q52500238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6188b713c7917c9a578fd07b5b554bf275a858b81b402df7b1e3c0fd1b3859e5. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/SE5Q52500188.
Epidemic Presents: Crates (Ingrid Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a65069509c84e8e2f2fb40be4a9dc2727b11d92c2285d3f888c49a5d9b11a1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE5Q52101187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92c13aaabe857188cfd2df7f5c8d89ecafb67a9976cd47c3ccd57c0270fd009. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/SE5Q52101411.