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 0x1ab4a8dd5e2b139fb925b2d37b98de942ab09c31120d8a58970e042c5ecabb4f. 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/c449f372-f36b-458a-9459-f62db86e2053.json and https://artists.proofprofile.net/proofs/artist/c449f372-f36b-458a-9459-f62db86e2053.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 0xefd5e9c10b30b99ac0e858a3d99ff4b023050de4567c2b018c54173c9fd7796a. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:22:23Z), 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/PLC061706031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a425c7dbf3f0e2b39ca38bf5c54e2e8b024a61874e4d37750681f21177385d. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/PLC061706035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c0f4e76f1eb00d2f17f3551e09a5d7e31cb6863a5edac818ed3986b04123f5. 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/PLC061706037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41520f403be78d885ac5b945ca52eaf732fe5e53267216a922e6154328e0e12. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:12:40Z), 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/PLC061706041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67ec49a822823017acc5dea95cc7d4f7cb081831e272c25a60ce48b52071a6a. 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/PLC061706043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861957d3877d1de4f11e9df111e3ba9b22a50afd4a48cbdd52e2fb1070379559. 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/PLC061706044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd09d55498d4b96a0965f839ade5620dc05ae4b8eed36f8c1be29cd100289bf39. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:48:33Z), 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/PLA210500121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95dfc4db5f60da7195470457e5697f133543e7f42933702741e9fdf88ba67ba. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/PLA210500129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68d5166385a619c042883250d9c72edaa0dd910dc56c13ac059668146a0e788. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:39:10Z), 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/PLA210500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2c54ca470d3cf2292b41cfd1d8146bf8987206c8ba82f59663bc24261ab33f. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:30:04Z), 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/PLA210500122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24f8895f037c91c60c6488f414557d6bc900a0a3d9715f142008bd4530f6457. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:27:18Z), 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/PLC061706016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a01f63cb8285621960dc78e519446d0987e5fc36a8caf5d50f608fd1b7b1bf. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/PLC061706018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5734361a3a6a5c33c81bab205a2c46cc0ec11744b8922e2919be6fb8721693f1. 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/PLC061706021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf7d1c90a02a4a4db98353996a0a1b91258c28568a8df5a064f77bed1b89cfec. 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/PLC061706025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236c4723d88edced1cbcad4bd466c71cd94feec5b6106acbe5f3f88e559d2466. 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/PLC061706026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096ba189b646d20d109b93026d3e42ebf6a7a16192b210680275979580374d98. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/PLC061706029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8582ccc2a6416e0176d7b5efec893ef8f3845dcb14048d5723a9c1dcede47b. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/PLI360953450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c78c2ff111218d9822c9613dc8ad684744272ca9856b3ef3e8096145b8c59f. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:05:53Z), 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/PLI360953400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3fdb2708c95107c0c8b994a653008d24a519f599941e9d5a446525ea149c1d. 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/PLK801400067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e7f2cd1266a4b69cfbeb152f074e42dfe870605d4c033d2f9d89417fea485d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/PLC061302195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7602674a4c9e93e01f401bf56c407343b430228943ee134818a180f75c4bb76. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/PLC061302202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6467d68e9987cf4f58fe930aa9f02067243adf87274017447094cab0ff275d9. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/PLA210500125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa096de8b03dad6741033bed3bb56afb1d4193633474bd20a7715cc66bb2da73. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:50Z), 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/PLR861900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2181fc6a5553d1a7b515a2e702081a516814588e2c2003f3c1ee43e4ee92a469. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:26:54Z), 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/PLN312300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x795a255b75789103d8ac4776a6eaedc1e86cde91eb713dd7c086b7599f33fcbc. 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/PLN312300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5961eca98cc229b05c01315d4459c74f776c07c971392639c54e37105640e96d. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/PLN312500002.