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 0xfb77bfc37453bfdcc6ee43725d53278d96d60f09dbc6d020ef314cfcd4975e11. 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/0cf95a90-6266-44f5-a267-24fce9a67f2b.json and https://artists.proofprofile.net/proofs/artist/0cf95a90-6266-44f5-a267-24fce9a67f2b.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 0x5e0e6a9f6803971568ac66828c5a12469f03a79836f3a1738ea532b24be0fa9a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12339685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb68eb193eea0df9a3187e15bb898bcabbd6d10938bbf5d9e2ed6cbb011ddcf. 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/FR9W12339159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6d00bb11e4eb23e62f7895ca023d24beaaf1adec39ba677e8cf3bce5ece0c4. 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/FR9W12339160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf88ae74ddf31d9244575daef3485423834ad558d1dd855ece8ae96b51c07a0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12339161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aef8cfeacd263d6d5d3c8831729f3252ec20af1b6ac2b4d78547aaabeaae18e. 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/FR9W12339162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b1132ca2f1d47d148a9b48828e04cce71babe29094f0caeeebc9f95603dbbe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12339163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd51896a795cf009866cbce972115551c06bb3b839544b3b899eda52f4fdda42. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12339164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704f085c0dd679930f4a4ce5517c3793c51104f6c689d4cbaadcc61e3669fdc4. 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/FR9W12339165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce29bc0d9b871c4bcd92e32b374492750a80148ded8cc0039ba7b874df2954c2. 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/FR9W12339166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4319dd78bfd1ba103e52a65bd6845867da7cda80c604b0bed73180b30be52a. 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/FR9W12339167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313ad6fc1c6a419e1ef195c41d6ccc0f41f6d65296923256e80007d69fc370f4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12324282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefbb1173990d42623bb06cabe775b01ca39903a485149d3fdc7090f2904dfe86. 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/FR9W12339169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51837daa94db5686017f7a89708f51e9d35c86504045e2379737d098d1650f2f. 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/FR9W12339170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fe9e401b9a85aa7e822c233a5de6817e961548f72a2a706cf99ee16c7ef1db. 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/FR9W12339686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d2dd153411620868a868dd549be326e720b8b0c0c5d7d1298f6bb2ddad6576. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12339172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff5cdb6dda0c169a46cf279a05983b301202fc7c08088105af004bd339a9565. 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/FR9W12339173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc740f7a4c106115c12ac054295286afcdb3b598d2a9f3e620f70ad08535644. 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/FR9W12339174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bce94a31852b65d23272ec1fc8bb4280c0bf4a77ca204f681d056ab00095f4. 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/FRE7E2200370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf88ae74ddf31d9244575daef3485423834ad558d1dd855ece8ae96b51c07a0. 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/FR9W12339161.