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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 0xb1fa18e25dfb913cb5f4653d94f919dba7fc628c228c2254944f7d0102298c3e. 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/bc0d4852-a462-46df-a76e-12e4589702d3.json and https://artists.proofprofile.net/proofs/artist/bc0d4852-a462-46df-a76e-12e4589702d3.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 0xe0b93c6c1a344a78e2ad5385a19fa60cc4a8401390391e27b3fc2975987f37a8. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:08:18Z), 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/BRBLC0500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9375d0b54fe8ee1d537bd138bc9be96a8fd24b545a484276a37fe34a9bb408f8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/BRBLC0500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9005cac68f728193f798536cd5469eb2957b5c2c5bd5d6f392f4313e9fe541c6. 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/BRBLC0500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc3628b0f25a08d78ee2f635eaf7980abd48255dba2ca08c3f6b3ad5d1b61db. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:49:59Z), 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/BRBLC0500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f338e0191a4ff3417e830a423abeb3cf66c0c2f32b59018e4b7884bdc31e989. 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/BRTRB0800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5880f3936a5a79331cd53b8d961160ee015657cd515353d1a5599aefe599bcc7. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRTRB0800203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91dcff5ece964c292d48b3cb5dfba579bbd4bce1334db326393ad11a820c226b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/BRTRB0800204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ad345280b7808e2c4844772d8bf8be526bf7296dbdde28f72ab21362704cf0. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:34:00Z), 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/BRTRB0800206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33cd34738093d24f1689152f020e4ca8d32ad308a0fba5853d681b9471480085. 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/BRTRB0800198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efa45717a0ca83d6c5f96ecb58a85469af717ae53a0c5685c7c283a14412476. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:06:50Z), 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/BRTRB0800199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10e9db430e6929c0d250ff4b586ba4fd1f8da73ef8b2ad56b2dc0f933c8caaf. 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/BRBLC1100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7623205444bc43cc1b38ebf0473f20c38849fbbc17d75d4b18429e32d239e9e8. 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/BRBLC1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ace04318ea980b12641a9da68f44a81efba032545a025198ff74b6f6993de02. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BRBLC1100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1da7e752bdd5b981bcd24a3571f943c8be10bfbaf2142b41123539d27a8d4e. 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/BRBLC1100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6d69ccbd0015e0745ad4f63a45889d7cce6a0fab72af872a7f1b8ebc418baf. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/BRBLC1100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8318c917be6a8acc20ddb68fb7818ab091583a0c72891d4322ab6fff6503dd2. 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/BRBLC1100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6dcb9011b7688cdd0e8ab99424f83bfc97cf11c73625a56be9fb355f675dbf2. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/BRBLC1100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc434be20f1bec421272a63534ab34ab0f245ef397dc2840faa5f91fd390b7e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:17:04Z), 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/BRBLC1100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a39ec74f97ffc95ffd7402f868ee47037cd0fc014b346c40eef895da98811a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:08:07Z), 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/BXAFU1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf2e1686354f97b14d137f23521d8f010019ff8e8aacc5fb87c54df6c8d56ab. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BXAFU1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d90eb163fecd920f4d190d5f45d3d1d2c9bb85c7d35c46a32cf3946d6e283bf. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:03:35Z), 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/BXAFU1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd83e56b0bd020e54f584867be944687dadb5f119b564cd206be55f6d1f6591. 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/BXAFU1900008.