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 0xb26b445702a48a73ee5bcdbb545860a653840fa128a0c42ba56ebb2503532eda. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b78ca81b-157a-42af-8c98-9954f83eb20e.json and https://artists.proofprofile.net/proofs/artist/b78ca81b-157a-42af-8c98-9954f83eb20e.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 0x965080322b6a7504c0aa250a3a2114de78ca3933d3a17427c851f796ec189a29. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/UK6822319714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a5eea3c8f65a4e33b803b0001d40b660f62409625ea0c29d8edda7c0f5c09a. 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/UK6822319715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e0839fb3aeecf58e0f3ffe6d7e608758e64b74aed918865a389a4b3bed7ac8. 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/UK6822319716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36a36f57425a00111f1ac3585f5ffc27d3e822868264db32219d0186be7cc4b6. 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/UK6822319717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd88e8767e440a986ee7e52e875a59eed0fdbed7c0c8961794e43e78d7f21d18. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:40:07Z), 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/UK6822319718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b19d6cb079a864ce95dee9d609872d2d67398e0ac96a6a48b945d50335030b6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/UK6822319719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc180acd44c71b5563ebbc1223b2678e7d5a7dd1445f59ccd5bff81694e70179d. 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/UK6822319720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be33da2dc4babbae1ac8bba11f635583e572538cd68b68fd0636b09415d57c0. 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/UK6822319721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ca36f16bc0b8e230be2fff671d638ffa19e43c82d5c39df8d5b968718a91b6. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UK6822319722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69fe816dcf049b203a1fc9bb5e75a109f423651196bfb3539b1ab173260caed. 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/QZGLM2502101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec8b9cf76b4970151bc554b003e634d3d99a8b5bf90ae8990fce9b1b7abdf87. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZGLM2528953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8062aad04a758794deba78c0c8918a590e8c9cb8f66a18a2691348a4ca76bb55. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZGLM2544225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace1e71e371a543d688de739bdf58601394786caf2d181319e81f18f063ce51d. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZGLM2594936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43385373e8528c92fbdc9372be43a39147a1bfe50621f4c679db763668b73c69. 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/QZGLM2599732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7093103385db9faf7eccec4548c17b22b3a07060fde8fdab33afec3f8f72b4. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZGLS2513983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17e7ea27de54b364cdc0ab1cea634a09fc55dd36e379a095a759e18f62ff603. 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/QZGLS2523242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03a791651105d70dbd59409fa2b16223ec173e91062d337b951e6e6d277ad91. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZGLS2535071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9d0f17abd813e9eb3ecc534a71d175afea72fd3ed2778c6926b58a7e53767b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:25:27Z), 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/QZGLS2566489.