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 0x89390eccc898f3ddc4fbec074e470e9cd6f165214245cb97601f3dc5a5ebda0f. 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/05c6d025-6219-4242-9984-8b5cfa6079d7.json and https://artists.proofprofile.net/proofs/artist/05c6d025-6219-4242-9984-8b5cfa6079d7.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 0x166b2e6b6249e0eaa5ffc4086a528d0ed20757b570aaefc1ac2d59d6e58bbd05. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:28:52Z), 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/SMRUS0070402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f20a5525cfb0e2db4a863ab72c08be6c212de02dde40400db075b7fe37e7a73. 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/SMRUS0073124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07412d26c8110b34642b8885270e96cb4113d0822ba0c1900c1e5453796adb0. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/SMRUS0074737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe754a9502dc2e022ac6346f9f280575c8f87899e8b7bf1c9bb44be1b110388a8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/RUA1D2374632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10e808742d104b3b81b31e22ef83abf32301b1a06dde8240fbe2303669f72d8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:05:21Z), 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/RUA1D2434841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdffdefbdb7df448d2a32d50ac0304dae0afdf179a42a2615ffc377504e6ab9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/RUA1D2466262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458a15927fd978b9cd53f0ef4d2f2791bde9c4c999ffe1b8c227c93a41904773. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/RUA1D2480028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc5e6ac18501b2a71dc8f60f5933adf88877f2c86c37f6511de643dac31a61c. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/RUAGT2407584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d19d362e1bf3eab26e1f3500bc6fcaff7dc141c4cc88f2a116faae3e8304f3. 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/RUAGT2451610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19560f3daf094d4d9604a662dbacbc8e0c63ee2eab3c34447b9dfa6502b9dd0. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:26:03Z), 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/RUAGT2451612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8343646b9d8ed94308106a03e6de74d9e12559905adb7057934a5302e9a60519. 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/RUAGT2451614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe13cb4138e8834465d2552b5ce2da26f72f27729189b9c96ef108f7f99ba17e. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/RUAGT2451616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacca352cc9fe4f6618ed1244ef677a7891103e2c771b6f74caccbfcd179d8c3. 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/RUAGT2451620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0044afc96406ec0e5b44ad1ffd34328b6d136c82af6ba3dceb1957fca27a16d. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/RUAGT2451622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad9c27461320c19e3efe88b66174bf3397f24aebd3457106620125b60e9339a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/RUAGT2520357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacb56f111f7392f736e97cb802aeec54dbc75e6ffadefc17f3e1cee291bec86f. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:12:48Z), 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/RUAGT2545746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6171ba277909ffb21268bafc372c7684731d8e06f797d41041ec89c427159c8. 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/RUAGT2587715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518206926dfc0f1ac2b330de8b1204ee956214058859f31acd3dfc0f3dc6f2d5. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SMRUS0057449.