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 0xa62cf9a4c1684771114feb239f3ad44754bb76352c709ca2aa1795bfe341672b. 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/fb2ef5df-976a-4e1b-9a6c-cd423f686fef.json and https://artists.proofprofile.net/proofs/artist/fb2ef5df-976a-4e1b-9a6c-cd423f686fef.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 0xc284d2ac9a71f5a9706d4ee5e901f9b6834da60bcdd22db2ab968483d52c32d4. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEOV41200656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c535dfbfbcb6981694420c43f4b08ad6e098fad29e34cc66b4051b223b18dd6. 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/DEOV41200657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839ce3fc6b2a464f6d76ea94087e6f98d2eb90e10b5e9b9ba43b3dafcc5e7c80. 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/DEOV41200658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3581143a9616ab50fdbc09fd3683b81e92c76cd434246eddc04a284b3de64c2a. 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/DEOV41200659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0951d80be976a86ee60e8703f9d3299e56859ab9a9a0e6cca806bacb929a0bb. 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/DEOV41200660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a32f4dceb29d5a4562e4232bda47d962dc1c03a46c48974e16a83de83b46d3. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEOV41200661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e54cfba68ae7f9fdb8a52d118345279e632114003eb7a3d0b58f016a41c538b. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/DEOV41200662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620c119c5267587f4566e4f491b1acbfba27598066f563cea66b48e0051394b1. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DEOV41200664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35854b005b0cff491caee71a5e92713dc947d8cd996b96cdf03e9708b5de4cae. 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/DEOV41200665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd09a8d383af0d867a02451995ba5b458dd2d74858d5a641e155b33cde364ca. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEOV41200667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8f3c17d1afca2fa7cc4d0acb9a630bb9f2f77744e30662e9e699a6046f0fd7. 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/DEOV41200668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d10a3cb49c7ac7a700478f98245777d0b892adaf5c2f1a9cc4913e7916c541. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEOV41200669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8010214daabf9850bd1c08a6ab4d4f2ba7914b9c4ca082ad306ae1bb2c58b5b. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-15T21:33:28Z), 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/DEOV41401018.
Glaube Liebe Hoffnung (Bonus Track Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437c6635e440bdb9e7c2eb53500ec546b78613af301d8cf099e30463031c85fc. 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/DEOV41600432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fced43b85215b4489da78fd2ce5f74d9018f095f443ce2fde96960c28bac5d9. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/DEOV41600433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd7a3ad6c260638fdb58aebd7030cf496ddf9a7823721a8839740af500cabba. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/DEOV41600434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07ce0f0d84ddb09e65f89aeead61302e9c1aa175f17306254574cb93910022d. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/DEOV41600435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0d6f2c8c0f5f5948bef0bc52683a15bc77a97c0fd01a32dee9b6a05c0a5bdc. 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/DEOV41800965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1176dc787bd4b1ec202edc96874c436396960677ca2bcffb5cf8761d1b391a29. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEOV42100175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c02b8ab246506307668381beeb605f0f51af22fc7c473443e22f8c2e94ffe9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEOV42100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8dfbffc22c52a5bddfdb12beffef2cc1a3975177215f6a23f37232d83881b07. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEOV42100179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52e69ddaa413a9c4eabf2ec819e07af3fac38950c83a9b24c2c992cf2c911d9. 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/DEOV42301149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15864ddb35e2823dc187db816db9cbdec26eb173779721c459a9965ce91396ab. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEOV42301150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f05e24ee66d9225f06aa11e14abf440b3e89d1223a4f4050527ec81ef30c3b. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/DEOV42301152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56dac6491e757e145240266baaf5bf139c198a87c4bdbe10ff1de20834300bca. 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/DEOV42301157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddba63f0166f54271c4e955b6af7806e798ded42f98dc3afc418ef6111b3ed98. 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/QMDA72593273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf1ac0aff3eb56c4f817045a9e94020d354ffe33afa5b84ed21a92ee27c8a43. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QMDA72593271.
A Human Scanner - The 20th Anniversary Compilation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b43b788c4448aaccecb6ceef8b4850fa34fc51b23358886afc758665a3ff43. 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/DEOV41800993.