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 0x064d55a5e67c2b0972805eebdc4ef0050d58d0d448fc2d646bebc3da564493f5. 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/85492388-0497-4261-9e8a-8d569bb8dde1.json and https://artists.proofprofile.net/proofs/artist/85492388-0497-4261-9e8a-8d569bb8dde1.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 0x87727dbf02acfbedfa3feba5393dbba1cc04f975a76ffe6aab2a8ca80ff1c1b9. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QM4DW1852238.
Seasons Going by Like the Girls I Used to Care About
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da2e304b2fd1cb67520bc8aed076cf32f71574770b214cfd516dc31a03eabaa. 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/QZES91833100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcabf911645ac6fffb8bba4806163775dc84c23769d49ad8f820ffadd121c8dfa. 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/QZHN81911385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c4ba93efc0fa9a8ac1076bd62521949b9bc37edf550414e80479e4fdf872ea. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHN81911388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fe8a54a407207f7c4f43f6a3fef9f6fa70f3579ef41806334a14b6452ac467. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZHN81911393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f3f8b7b98d64b8987162b19cc04031c489b988b221d95114ca05bc28a8b516. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZMEM2050242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b11243ca0a329fc73c4dfe7ac4e821818a6091d21cf411ff5af3dab16a18390. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:12:27Z), 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/QZMEM2050243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbf8890b20cf3283a464489d7d044f4e2e5d51ac53a9ade92c6d44adac01ab0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZMEM2050244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1740f76d749585a823d25cd4b29c6a93bf1578a9da03a1e80ff2ed4e030c44ed. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZMEM2050246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646410175a5f87279f1cdc6c4f50cda7393ac6fc797eeb7445cca2e81ee55cf5. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZMEM2050248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2163bc3d9cf74e5c41c64cec10ddb1fc345486e4a3519f1186d411f4cd5b4395. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZMEM2050249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca50f00c1e50a5ccee1724944b366535c899bf42c1c1659fc597752ef63edb3b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZHNA2184034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66801df46db16e93f846895cd3091ca54b16523de07f5ce404ac83f5dcfb3603. 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/QZK6J2173143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6572f92efd28afda82c820787d6aa81d0187814629fc7fe3d6325ce505fb70. 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/QZPLR2355281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9449d6646b841c6789edc94155c9335aef14ea48e5ffa1e745244d37dd182e. 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/QZHN42514195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc278415692e9712690ed336dc48bb213ea7c2e74dfbc9fa5c66cc6059c254574. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMFME2551405.