1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xf31302219bab7ca74e39763f9f669d60193360583e597f8fc27d14010aabc177. 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/32fd5208-30aa-4b58-a927-de43000f21ee.json and https://artists.proofprofile.net/proofs/artist/32fd5208-30aa-4b58-a927-de43000f21ee.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 → block OTSBitcoinBlock must exist at that height 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 0x128e022f3c13d2d92a475a679f6168c0ab699ee11f1daa08c89fa6df7e0575b5. 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/USSE90931538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19049637d4beb98a9ae3d438656ebff3ddbbc77ab0c03bcb8fb808314e78982. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:54:13Z), 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/USSE90931541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1c9394f1bcf86ccd5593d5e09ff80851830271e9794c32efc9500982a35b7c. 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/USSE90931543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaac63c608ab4eaf6c60fb1dc6ba13582b7e8c8e86956a629c6509ce04bc7b7d. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/USSE90931551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d805b9708f74469ea9d27aed3b409cc7445306d282d542e7b1225391bc695d. 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/USSE90931553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a096a5b20a8708014fbe578bbbe5bca5d2c0a08a904344a0504c7c1353bd3a1. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US85P1421903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be1d06732d4fd6ae8345e5eb7a0e5745911b25b14883a472aec61c8dcc64dad. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/US85P1421905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771d30dd28c80881920b11b45f79a97b6b9429e532563d3963627e587ea3d738. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/US85P1421907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef255917a70c4290ba1c3ada65433577d832d920c1f9f31a7fe1f6b41e664dad. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/US85P1421910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264bb2f89083184c20f7b2c53f8c33e1c6777791068dfaea91e31d29f45ee93f. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/US85P1421911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed02ae2f557269578ec5af05b7362c62aa9a04bd7ef294f229ff09cdcac3c3f. 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/US85P1421912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b3ce4d5f9c4d1ed8ed6e09676c0bc8f66500b6436af7581dfbeb5d808b1589. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/US85P1421914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a39c40e8a6f7164e19315f2d14a6c74de8dde93c52f60bc2a8a01f9a0a23aa. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/US85P1421915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae43f336ff32a0210c7cfe154f2cf38fe2416d01badb0a582ab96a846961aef. 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/US85P1421916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cb5b328b011271e0f07f3cb54fe6911a8f03f1b7b45ab2c66149328d745053. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US85P1421917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2565bd852e896d10abe1ffb54c14e7ecd001ccb75392c7cbf8e0ec91dd55c9b. 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/US85P1421918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c1bb3746c90ce9939bdf3042967176e0567cc0ae0161b892ad70d2c220542e. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/USGEK2200751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d70c76b1eb4405e101e5218fca33f95ded28277d27893f25a6263f2c6d53c92. 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/USGEK2200753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d285fedf289d2e2367975f2112acc074056addb8649c3663e7202bf189f9180. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USGEK2200754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e0989c93d57a74e00fde79109236f532c4c84b20366daafc8bd9088a545200. 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/USGEK2200758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f69461c4704cf65136957020bbe4cf618f5f871a84f42d1db791f8dd18280aa. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USGEK2200760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803ac4e970f0d7c858ed005ded35a13bf4b2d477839ea416c9a535bd66427f0e. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USGEK2200761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a27a92b07b29620f43644df3fdc86cb09e97d6553594d883970c5122f1241a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USGEK2200765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd85bb47bc043d42b2c13f6b488a3fd27df0ce122bf418db27ffbcef3450652. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/USGEK2200766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf71c8a1a0b5922c1889c36b429e7a717c13476c3c0b155fb2fd9a9009583a9b. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:57:03Z), 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/USGEK2200768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b095ece48d2bca28cce4a40298883b1dbc974a2d42218986f2e745190fd26e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USGEK2200770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7893c3ee1bdff6740b05105fad17414059c02b32333762dbbbff5893389f854. 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/USGEK2200771.