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 0x599eb7d2ddf0164aa0545c162e43b65cc2681142f9f8b05fcfc03ce20aa0ec8b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/380b77db-8316-4d73-b400-d258ae280270.json and https://artists.proofprofile.net/proofs/artist/380b77db-8316-4d73-b400-d258ae280270.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Need to Scream - Best of Screamo & Metalcore
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 0x88ea52700c0bd3cc42c7b9419a704d09d2e2043ba1d5b38affbe3e79f16e1108. 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/DEAR41528918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d77d47c5402d1188a066043c937722faaf4f01c0613930ef854cf434e0f0477. 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/DEAR41217917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54122725e2ce1f11550520a0426fea0b6a833c35b56a7814f33ed669f3095c1. 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/DEVX62300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0bfa2c8247de548dde10961e95bc3ca51b6db32a2832ce2d8d5bfb086d9fda3. 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/DEVX62300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f683fab013b6e8c223b71ad963ff2299de297a3cb0a987c491b2babf43c9b8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEVX62300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b79105440aa2d88cff0c21c5f3596b65c6f5057b4490cc64678a5a076912da2. 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/DEVX62300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d7229280dff8de36554a78e5349edd8a11a584a7327274e56c3c15711c2b6f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEVX62300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15c51ae34b3bf19f3d650730ec284c912908269ec04858b7cc79a0d6faf3ab8. 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/DEVX62300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dcca060bc0d73535c332635b90d4fd076ca094ee8e350a780a22c700e8a278. 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/DEVX62300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701ae9568f2de88fa6ab684ee2c428ee9558fca3b811dfa5b8c7574959d166ac. 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/DEVX62300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaebfb2df7b0fe8d958d5b7190b2e4c3c7019bab4981ef635b34f511fd4cfed3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEVX62300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9fb70b5334061efc72a2282a98fa2f439fc289d71a96cfe1ab3d38b4618732. 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/DEVX61700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce595c3daabb81d7b9a5b2875a7947173a9ed1db9cbbf1f56e4cbeac88128be. 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/DEVX61700049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae8f5515a7197f198aa8d0d71f7e3635ee0019e93ec8ca28c659e9416a7be57. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DEVX61700044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded56bd1d12297dd62d7a0a3223d8cbe3b33eeb06a443269f430954f33c87c36. 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/DEVX61700051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77a8bd57d10c840bf0747ce0862fe760afbe51c27922eb58142fd18746b2dd7. 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/DEVX61700047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0598f42434e405cdce0a72dbc10440302dbf7d4d2ace671f5ddc5de034546ac. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEVX61700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ec738952867dab4dac8edc0700655528c824dd395229bc3a334220cd94b58c. 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/DEVX61700048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a0e7cd3c6ba0238dc24ec48070cce48b47fd4f0aca7d7edf077cef5bd01f4f. 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/DEVX61700045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c927097ab6dc496fc088bd6584d37185b84022707eaefc404a1f1aeaa08d119. 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/DEVX61700046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6e5dc873c3a0b796597bfb54ec937ef7d162528a45c3ce65bd761510456559. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEVX62000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ae810265fdae2be05765785cbcac5cdcb5637fa61f1f37314c2e886e823bd5. 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/DEVX62000014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a94ae7caabcaedbeecb32b17093a9f0245ec95aec2dd146cba6909e82401581. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEVX62000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e4307ec5a2e0bab9483a170c99e47bc5ad0d5fcda8fb5a54ead3df49b0f67ae. 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/DEVX62000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc27f6c0b578c164e1e9bec1c625d3e8f5173f22a38a433e64428497374cf4f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEVX62000022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dce645b93fa783ce0f867f5576fe8f1426a8504b20d870c56a20148549fcdd8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEVX62000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe395993039e645c4fad5cba063971b7e8272bdf07b33996f82122cee1c11595b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEVX62000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde45323e38954a2f1975000e893a1e87c37c01639336c792244cd416c91f52ca. 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/DEVX62400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x182463c5fecc9ef79fd43c128943a4a85bad39c76cd38d115ef8322360ccc5a4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEVX62400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e28e4551dd5645b4beee31dcef34d20cdb49ef4293d36b0654d26964779f01. 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/DEVX62200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd093a80ef2db55abdc54801da8c7e90351abddbfe5707647f774187b6e46eea. 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/DEVX62100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7cbee3e9c39d6ae20c0b152fbef2e1557be66a95c3d0c46abf512d449fb665. 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/DEVX62200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefbbe38f8245048bccb576b9137c1fc54095e5e207ef0793778511dae082f9c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:24:23Z), 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/DEVX62200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f80683b2a23bbd7f07e059b2bd22cc246a5def474c87a819af5d1c52307a76b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEVX62100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8615efda996ba16253ece651a51e307b4925b9679d7e8c1cadefb8e9d3aa313. 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/DEVX62200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f80683b2a23bbd7f07e059b2bd22cc246a5def474c87a819af5d1c52307a76b. 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/DEVX62100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd093a80ef2db55abdc54801da8c7e90351abddbfe5707647f774187b6e46eea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEVX62100001.
Stories from the Pit - Best of Metalcore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20e95fb5b8033ae2ccb0259ff4ef38702f3508cd316e9933cb4790eb6f7ea84. 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/DEAR41217904.