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 0x7303f5d5d20e0a6488eb2651ea034fe5ae5d6c31460f810c237899de64293812. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dea9d9bb-3ade-4103-8996-f9b18a2d48bf.json and https://artists.proofprofile.net/proofs/artist/dea9d9bb-3ade-4103-8996-f9b18a2d48bf.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 0x40ea268a133e44ccd67d8149c5e9cdcbe5f6fdf587fe754a44d30ec220b1463a. 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/QT3FC2522875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3ceee65cafd953882dc36500fd601ca1d104aad84fe57e8e4118dec4c53871. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT3FE2529764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9fd042e19afed5e401d2e6ece823cac2a47303c3da8bb67ef729d7ea03f829. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QT3FD2570111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac74abe077105027467b1ffcbeb74f64ed7d6a45941015aedca0f90407f1faf. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QT3FD2587751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946aeca7b379958deef70144898aa26392d5a58fa73aa46b4d9efa883bd913aa. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QT3FD2572771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0bad6986ca3610890a5d43118a1b2b5d43ebfbc2b05e80ebb0793a2a6b8ea5. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:53:09Z), 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/QT3FE2546128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ece4a2472472f2eb4a77942521acaf40059259cf851555b0b873a0834aea17. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3FE2522752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b48f1e39e7876c0ebbb9795063e1e8516f5aac577b82fd6f1699b15d58260e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QT3FE2522806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e8184c110a56b8163f6bbdac4f08417452c17eede940e7262d4690893f9ef0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT3FD2589988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bec6e4cb27b1c122c24e3fba20598d80ebcbf6fec3ea4ddfee619cb29ba60f. 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/QT3FE2546078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3943059d303ea6728d7222f0d8a80ec2c2721c59230125e973ce78573f667d. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3FE2522758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed014c9c03b0190185dbdb56627cbb3001f562164e681f8227856c95d73823a. 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/QT3FD2568066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e61d4b294fdb52de1bbe0a68ae93f2ededfe23acf49c3ec8f3949fc45a79f0. 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/QT3FD2570091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa91a0a2000b8fb46bf0fd0250a3d05c6db3239c87c5d1ba08bdd2d3b6cf3e8f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT3FE2543470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1256ab3a9d727426ec64dbf81e04af0d70403cb5776b2215558b4dfd17b272d6. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3FE2529793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6261517f757ebf9960b10ec8287744f3bccc73577857579bbdad0ffbd461472b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QT3FD2570099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0f5a44517fd93d269ca5068aab2adbe35e5aec018ef13767c54d5640eb9bd2. 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/QT3FE2546084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe265c359a1e9ca6ec18fc29c89026d35af4e2f17539f7cce87aaca1d6b728961. 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/QT3FE2529770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4507174813a7a8c5581268ca3fe6fe690e1609eba682279480caf1231c627733. 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/QT3FE2546083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974328bed3ef5caa96428fe0e180e73bc93d844917d2b33b68fd7e09c98efc48. 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/QT3FD2570198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b02b8bfec938ca7a4ec5bdc404d49fcdeebb1d66c683e5c7751cc67686b1d4d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QT3FE2526998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3239a4000780c68b86ea1528be15394999c3f53f6fe3a46f31bf316be3a20300. 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/QT3FD2570157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07deb0b3fe6408288cc7dd9ffa487e73662a251e0f7b561e843094e6e7bf5cf. 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/QT3FE2555774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ea2ac831b5205dc55bf59bcce2ce48d27a4d0a317cfdb36dd90ba00a31360a0. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:48:51Z), 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/QT3FE2553748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9670cf9cbe2d0fd8a9a6892cdc921dc050d342e501ff0c13566d9ba6395baaa4. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QT3FE2555779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad1bd7a274fdc7ff2e0f0ec35069f8d48c2af7799621c969e23a955365195d2. 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/ESA011821874.