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 0x6c30bca8f1c3dbb59b3937116302192ce5e398feae1efab08a8cec8ff84b40a0. 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/e9a73b45-142f-4e67-8fda-1d7d62859a6a.json and https://artists.proofprofile.net/proofs/artist/e9a73b45-142f-4e67-8fda-1d7d62859a6a.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 0x939eca9539a36cd8f4828a72755070ea01454d5dd1e187b46f1c727173601255. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GX53U2381805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4902fc9a2a9a54455e8a7620fca1c4126f58f0639a2ec56a67eddb1ea462ca3. 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/GX53U2381806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7aa239b63fe506eb71fc11561d83903c021d86fb7daab2ed7b3e5b14408d04b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:30:02Z), 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/GX53U2381807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0d7d9e92aae94904ec799be6bb672fb3d762bb493e1f50c6f1cf5026030137. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/GX53U2381810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937ebe30e474ae675187bb5d43db6a6eb2849595ed798bd59ca523381225f7f2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GX53U2381811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b643bbbea42fde852642675e838d5fbc4396271dc17e28999b32798d5a1296. 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/UKXN22335360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bb4787791d8d5bd52f6d414080ddb3522dd376bae86d411e492f3af8ea3008. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/UKXN22335362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63202df1abe55e07bcd0fcad35bd3acc668f41e22669f87f010c2f066737ff2a. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/UKXN22335366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517ad7391ec32d8dd82311f5ecf84816dfda18bf7ceb0e0ca2364da75e5add8b. 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/UKXN22335367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75197427a8d01c9a7fafe8407b0bdee380a39dbe460dff48cd42eb30986489d8. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GX53U2415455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db2c5aee2fe86871816b71b5672f156d1c4e16fbe726a5543699bfd33a0958b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:47:01Z), 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/GBLFP2460588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46d417e3af46a2e5fb999872da1fddb44cd69fe9a02f7d80b023daa3450790d9. 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/GBLFP2460589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f2f498a50a08781c0cf09e9dc4199f71f94dee675f355ffc2c44d15ce906be. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:26:33Z), 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/GBLFP2460595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78a6a38cfa6b6391f4b3268d22d653abec1efb13104c09f7e1fef58b29a75a0. 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/GBLFP2460596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4710416287cfe984e811b00e4cd0f515ed4db5ae5a9a08429c38f1b04c93dd33. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T08:35:40Z), 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/GBLFP2460593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c69a4c53e22229ba27e4e2955cba64624e68164a82ae600ee5fb7e23e0fcaa4. 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/GBLFP2460592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49482191664fccc724879a50ac50935292c01c45e97bb39db7d105a4d7eab32. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:18:28Z), 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/GX53U2417896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb29484ff8b3fdc225310128f41827374387297e1adbae57496ac24468173e6c. 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/GX53U2417898.