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 0x243dc08581a8246b7920d5f58b7d858721ed3c6214a8a6c3a653f46dd01cc7e9. 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/1576e81c-0485-4693-b1be-05b1a4d5375a.json and https://artists.proofprofile.net/proofs/artist/1576e81c-0485-4693-b1be-05b1a4d5375a.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 0xb0899aeb894a4f62d73b50f9264e4980962755db53be644c27a741fa443a7ad4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/AUBM80600409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ec0afc224853c5eceddd375cfbef28a7c6b4bd7ecf5cea32172889eb99535c. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AUSM08900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125a73916a2fa1b7ab3c7f76eca9bb2229cacfb3b5ba8895f0cb0b1ff9c7610d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:07:01Z), 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/AUSM08900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1d29d4d8868495d1ed6d41a16bb5f871641ad700884a29e1caac1c43aab916. 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/AUSM08900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b3dcf98b517a322c61a505b824a0e762844de1e83046896b93309ea6e4b87d. 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/AUSM08900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473b0f88bf4bf654cbc0a476b5855e843caed4d7658159848ecc2fcb2d2929d9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/AUSM08800020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b41656c9850ce37eb18e704e321487042e81e7159069d6d531257638d53295. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/AUSM08800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c6f8ad045ed1c035e67f03b1e7aeaae6f9cfc3150300315704b95590ac8eea. 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/AUSM08800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c60baced68763ee4aa22e57385e3c3920885b4ca89a36cfc2577eafa2100f9. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/AUSM08800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fce5e33f95aeca2b16f575a7cd5c6998f0293d62656066a669b65f36bc957d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:24Z), 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/AUSM08800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5989fb1aa16b2be61c4513271d2747b451764a7172195218ab8261fa13d641. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/AUSM08800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf919692bd03f563c9e309daeb3781780bb7d95ca4ccc2b3d854b8636b61288d8. Chain 2 (Bitcoin): anchored in block 958399 (2026-07-17T10:39:51Z), 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/AUSM08800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8232ece2ef3a782c9f41fc7b2c4d7c671602779aa685d7921a4460fe79c21c. 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/AUSM09200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x052f3c1fb3d9567e331a3b5d2db20889c8cde4bdd86c4db0aaf15a82c2bc8a84. 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/AUSM09000031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1646aa38ac6c5b649674dfdecd64cec6eabf73644839d4a32c7dac5b9afd3e0b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AUSM09000033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe6823df1179c2870f890c3a6d474cf825e2f3aee9f5c3667a541dc2c27e6e3. 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/AUSM09200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8232ece2ef3a782c9f41fc7b2c4d7c671602779aa685d7921a4460fe79c21c. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:12:00Z), 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/AUSM09200034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d3bedae8c41f109c600c13acb44260e4af8a1fbbbe5b185353124d076e50bb9. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/AUBM00700198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce82cf41b3e85dbecd8663fb49dc9c3c3b782d2e9245ecbde824b99e9cebbe9. 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/AUBM00700199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3919047f3aae21e45a63220b754164936d4c3044ee1b435abd9a2a26af4fc34. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/AUBM00700203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2716ffa1b418d3fa61c4ae805e69cf8c347493b969f7edb66edd15c281a33f. 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/AUBM00700207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c443c32948a7b387ec389018e1cff9ab660b945285be331b40ca008a75bcda2. 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/AUMGB2200955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd723420bf2c1d1058cd644d8912aa797bb593194136782061967c25a09f634e0. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/AUMGB2201265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c48c2561ae198561e0112bb7d1bcf57f2bbc195cc295c500efe3f9f5c13b366. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/AUMGB2201266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9af4a75b6bbf77fdc1eb2c7073b7147e183bce42c14abd82bebdc2a7c74201. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AUMGB2201268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x593fb25cb787358fbefd86225c03058d9875cdeab86d15c6337d7ee23aef6b97. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:43:16Z), 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/AUMGB2201269.