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 0x5695c834daa77ba8f0c3cb5a6705f0a7275a69e2e6d64914a4b22e491d54598a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a844f71-af59-4a2d-a456-d33bd9b027c5.json and https://artists.proofprofile.net/proofs/artist/4a844f71-af59-4a2d-a456-d33bd9b027c5.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 0x96ae2b7a2322a01e5abb0d3d36ec31b70d83c9fe73a40e91ca751c5613244762. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLCQ61941301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220a04e6f6775fe5ca28b3fabad45e65306e050c404963e21ac96ec4f50f0b6b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLCQ61941302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d4ac36d6cb18770f9aee0f6297dd482855cdc88f174fbed951247810d95fa3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/NLCQ61941303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb6ec0d890cd22dd0ca1f170aef064b7f4dd49319ab6febcdfa50ff9d69aefc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLCQ61941305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1774ca9e5944ad2375c4f70704ace79a2bbc02078d28582acb7d83789044c060. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLCQ61941306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3abeb87d8efe695b2dddd7bd846c8cf2c31563b6ed708b21afed024a048f5658. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLCQ61941307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824bcaea31e49fc385bbd67dd9066518668618849c06c3058c3bc625cd28ff12. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLCQ61941308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a974e16e98aae8eaaccf7db099f4216ecc5d06dc43244cfaae6e5071798e7d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLCQ61941309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadd92f749550ec8c31e9189ab3065d127402c9e0accf6ca759be5539c41eab7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLCQ61941310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f45791b63121a8efab5b480039d6798f58d2fb4f1ad73cb149c8f68086704c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLCQ61941311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb163e01eebbe80252e1a2b8e655225933da0fc2646af4106c6cac337d55f8b7d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NLCQ61941312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497c98a87e6bf39fc2914af28d125b5d4efa87c51f7b4ae740ed125f70f09e8b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/NLCQ61941313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf4ecde9c5c06885ea99c2fc01cf64b3f29a8641405db991505f8bac7587b88. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/NLCQ61941314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02aafd4a18f88fdc8bfe058c60ba714ad6b8fba4df82b78b7280757b7641ddf0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLCQ61941315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71724cc657de94a2e7782444eb7d23ec7d40f471e694cd61287bae6455da464. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLCQ61941316.