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 0x3ce3d83acde9d021e4a596543df55d90a19e26fbea43ca88c9bddee061bc88db. 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/93c4138e-353c-4e54-8db9-865e670f9c06.json and https://artists.proofprofile.net/proofs/artist/93c4138e-353c-4e54-8db9-865e670f9c06.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 0x267ce632aad0ed01e5eadaf1ffd96bf25cacb23ffaa35ce6ca20c43b24466fc6. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/FR9W11917246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfe9607de0dc234b5fffb005eea2d28468d0d82f9727634689981ad0ff8ef73. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/FR9W11913680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ed5c72b1714589d8626d8acc2bc9c00f8dff0340afd01c24cff96decc55eae. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:00:42Z), 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/FRX881900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687d926cd36f5d31c570183232be5808c01efcd493c6607ce75e7ff1c88ba74c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR9W12010167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e1339b4aa9bcc984f616e60706893b8b4efcbcb7c83c7a21b765edfcb06a25. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FR9W12010436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ea84f26645ebcb7cf4fdc752a3066fded5ac1041f80e003914a8d55f399496. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:32:54Z), 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/FR9W12035700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc37244679365cf0c95309aca96001b212ea9b57dacb65fa094b93c5d23c8624. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/DGA092439182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7297ef393667d63c63874c35505abae12c9b3f567230696e0102931d4b2bc7e. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:10:51Z), 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/DGA0L2404007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee71619203da74e47e702a53fce3cf60bd8e645152abadc0af3492b709b2c6a9. 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/DGA0L2404008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd917b7ce06ac04dfe99c43d61c6f4e167d233f4ac2c202a2d6f28fab09fadb6c. 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/DGA0L2404010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5040c2475ddfcf2883383128f9f1459c8d35bd3c9cd101f33fdc4d845ff0258d. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/DGA0L2404012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a96ba322162fd203da56f8b5def6756a0a4722f54693c5f175d56ef9ea5786c. 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/DGA0L2404013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4d83d309c8b998565e650fb71daaed3a0b72fd6fc48df792a68d7abc1e486b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:40:45Z), 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/DGA0L2404015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81075275ec702e579762cc9f2f2e6c2a150255d5fb6a66ac55e643590467cf9d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DGA0L2404016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff3eb21995f8ce84ccf2f71c9359394039df4b03f43d7536bb0917155132b65. 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/DGA0L2404017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5421751760ee3256a0337070c3b2b47d122e59ac1e5eeba508e16b34b4098c0. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/DGA0L2404018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c64bf61713da1867bd02734db09f6ed1b1b3fb4e00af2b9f1ca653fe7b790af. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/DGA0L2404019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f0a9693a1b4c50387a8b508d2c5b04f1f03cb0f16e04ea8b82f991aa06f236. 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/FR8FB1702210.