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 0x551261879f40a01617d583cb3974d2c80a559ca6af07cb02b6ef9e2116affcc0. 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/f2497935-9ca7-416d-a49a-0c937f471d85.json and https://artists.proofprofile.net/proofs/artist/f2497935-9ca7-416d-a49a-0c937f471d85.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 0x35ca2a061e774061b971ebdaf75d8878bcae598a3aa14d9174b476e5595c235c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE2EX1801501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d09830b679bdcff563457255752ba9a6b0cd31af161eb6748a1dee4bc4bb88. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE2EX1801502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79729a4af383432e2a6c122cf89d5e74caa19324c39ea0d7cd9b13d058473e20. 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/SE2EX1801503.
Hip Hooray! (Lollo & Bernie’s Birthday Song) - English Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0f51bc2f79da616818f759e48212d61c947b626fd3666ab411099ab5fe36df. 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/SE2EX1801509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4385ee8b8f71dc9aa8cea8ec378c4f28b731f755f046f9bbecd9984d85b2c753. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T03:00:18Z), 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/SE2EX1801401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e6e4ee1b42b05d5eb1a219a5ba258de1edce6bbf08b5476754b821aece483c2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE2EX1801402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8eb457d45bb8620b94905ecf5829e225167a17172c16685643b06784aacb42. 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/SE2EX1801403.
Lollon ja Bernien paraati - Finnish Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d4ffb70846336c6ae6ffb3e9c2b30dfc0c764c10a7811cfe529bd308c86821. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE2EX1801405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b6362df413c9d263c2470e75fb70fcff44ccd1e1b28781108e3b720510c00c. 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/SE2EX1801410.
Lollo & Bernie Song - Scandinavian Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5530c5cb01da54cd8d8a58a0b9bb1c1c175cb7c4022911d15d325ab158c8c2. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SE2EX1801001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e01260b535427dec9c62a9803172405bb030c25805692cd1d4d657e665c77d4. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), 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/SE2EX1801104.
Hver sak har sin plass - Norweigan Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacbd7173ccc58df60ebaaafe17a1d035a501748532af6853c8241a536c86ae84. 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/SE2EX1801106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5530c5cb01da54cd8d8a58a0b9bb1c1c175cb7c4022911d15d325ab158c8c2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SE2EX1801001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2007a1a8599bfc7bd1ac808483ec2d47411d36eeb77f9748f0ef3811757275. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SE2EX1801003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb4e806014d1570832e143b03bb88287ad7605e7a69a762a719a785f8ebaf29. 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/SE2EX1801006.
Hipp Hurra! (Lollo & Bernies födelsedagssång) - Swedish Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0791813145ffa0f0fef07c8f2c00178cbc30b074be29bb783eb6f0e31ba02f73. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SE2EX1801010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611ca2f841830f554629dfc33ba395b58fa5cccacd64e123071d3592aeb95884. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE2EX1801202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d42a415a8a8386d2bd7e06000df0b54cea342b3b016949f3979c23d3bf92b9. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SE2EX1801203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898150c6740d73e84a95b11ac0677473ef704ddfd25137abadfdef52f220725f. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:41:12Z), 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/SE2EX1801204.
Hver ting har sin plads - Danish Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc27399fc7cd687920aafe9fc2f8310b13fd35636ab99f7652c6812f21966eeb0. 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/SE2EX1801206.
Lollo & Bernie Song - Scandinavian Children’s Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6532a471281a24e042237c37f4c7bd451fe14af70545034917de398c76f1078. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/SE2EX1801209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827a410f490890388c9ef108cc2d2d2a4834c13bb41a39ebd8f303a0c10967b7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SEUM72501682.