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 0x2acf569c60384eec534e27d3c83d8c2a96a8e66190e82fd3d437938374d4518a. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa1dad20-4924-4328-a042-74deb91ca8ee.json and https://artists.proofprofile.net/proofs/artist/aa1dad20-4924-4328-a042-74deb91ca8ee.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 0x4348eed49968c7e46b411820f3f8cd3af3acbc59f4f73f16c1e1d8bfbba75c93. 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/DEAR42569571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd05af3363beefc59eb732fe1132927df4f51b1e0b79adc0701e478f07f7d53. 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/DEAR42563551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b1b1b1523825a8320b7ca2e708ed4cf29ee92d8a5f3b68ff6131bfa36da822. 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/DEAR42560672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5205be24a2ae2432b7386617d3bd14263abfca9616a3b1a7baf2c3643cce6b3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEAR42549915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8a57b81ca43496f6f28a33ccd61db13fc0bac4a3507b31c08967a4ad5cb031. 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/DEAR42549553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e087cad486d3a6f3a239296ab9016c61397fa66b20632084cc4e9ed30d6b092. 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/QZNJX2522688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5298a979c542830d3b9ac9d510fa6d474b64ab5d0c2c3478fe73ccf70a7039. 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/QZNJX2553063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x804016ff1695b7f2c99de509ec72f61e45c3ce840442203028845866348e897c. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZNJY2569274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713c996d597203ec04d35cc99be8f5f9a36be9efd01a9da0b8e7e9c39086e335. 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/QZNJY2590385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1b10ced0d19d281773fcb3271a4d92838bfd51d3010b70a70a9af1ef355e3b. 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/QZNJZ2525828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15762be7283c4768c812ebfe3629fba86e9211621cf8547650736514f8f8885. 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/QZNJZ2575193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac75c5b1250e88f54d22e5e40beaf22a579d37f75e57b70b9d0ff79ed25292d. 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/QZNJZ2598204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285ce2c6dc93671dcd5f08202916f1e1c84ddfed5cee3bdee4c6ed7f5872bb44. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZTPX2593954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c11d0517b72f9302aa7227a6ff0d08e07251014cd0d9a792292f5496a224f8. 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/QZTPX2594028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbfff3a8e9314c240e4ed21369d4fa5c65678a2dd8624d75eba7e3be9456f8a. 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/QZTVM2532352.