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 0x12bb5c0fd08ebe37d3658d443a9a3eae54cb7e10aca49aca247b24e624b54031. 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/66ae5019-090f-46e0-a636-34cbaf7576a1.json and https://artists.proofprofile.net/proofs/artist/66ae5019-090f-46e0-a636-34cbaf7576a1.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 0x130cf6f7c139abc125704118deebbaef46b673ed1513b15546e581147808c736. 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/BRIMU1700595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a0fa264864b0e8be0a467c84b07c79f5e225c05fb7b5cb1328a2950a3b30c3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BRIMU1700596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b3f7e81dc5d0d75c11039b5a96d3b89a4bebe1c5304ddc0abcb9e1abdd86d21. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/BRIMU1700599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75960d8355b896357a9159279e13b93a8f573b6d5da49a0da9c3b412b7e2d95c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:59:24Z), 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/BRIMU1700602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77e10cc419c222bea955e9c07dd4b656359baa282ec3d0612c51c42a09b5018. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/BRIMU1700605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2767055e88775887491301a3572b8a60adf336386d23b68283969eb70b3aad. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BRIMU1700607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f0776adcf5546530c6fa91c4fc5418d387f9e4c1e8b049d47834d0def8f45d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/BRIMU1700609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58618e9403624d2552aa60a5a768da28f7076750ac73fb09bb829251ca37b29. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/BRIMU1700611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afea588230f1b8a1e97af207424423d2cec48915db47028334dc9ab35034885. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BRIMU1700612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17713860ab93c34ae95f0a5f0cdda471b97141f6febad7d5e33217acf0257400. 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/BRIMU1700614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfefe5c4923c86fe60dc2bf331b39cd9208cfca262ca5415ef5ec98fd393e4217. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/BRIMU1700615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2a37796c64621f0cb9ebbfd9c5b10f52a1d2d1e6f2f6a3a87ec77cf9771556. 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/BRIMU1700617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d15320911a4030376305cc91d6b5e5c415f7c3eb76dd1d8c75a7902a1cbbf9c. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:20:19Z), 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/BRIMU1700618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb435cc30e93613e07b711621650391d73a0094c63f90efe26cfe1e52dfb18121. 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/USHM81888149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80d681f3ba9f76e48d3ce32e54ff1c7aa218e98b2ad100214954e0dd32de07f. 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/USHM81888153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80a7d166cef05aa519761ca2a85c793429101694fe58a6e9faa83538a5ad2e5. 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/USHM81888161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8c55f324294af6118fab31417ca3a2e587cf8c9be3c022fd228ac8cdb50fe0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USHM81888165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb175642d991e2829025995e09aea505d92f9c04613097e92772920d71ba040c0. 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/USHM81888167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2778ef22860c23edad7a694af2e3bae960db28654a8cbc9d12ae18c9d4ae86. 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/USHM81888171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130cf6f7c139abc125704118deebbaef46b673ed1513b15546e581147808c736. 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/BRIMU1700595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5140443291cff7db615be95be083c76c5b7518d79f249af7d36aa9b21953e91. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRIMU1700597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b2767055e88775887491301a3572b8a60adf336386d23b68283969eb70b3aad. 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/BRIMU1700607.