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 0x7fab21ac129c053b3937f5ac9fd0cf5f46379f7c13ef9299191d284ca0b03682. 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/834617dc-3a18-4f76-a77a-ac9bfde3a212.json and https://artists.proofprofile.net/proofs/artist/834617dc-3a18-4f76-a77a-ac9bfde3a212.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 0x990667f09207f33ddf41b8c3402245226f22b38541e0bbcdf0712315cdf312ae. 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/QZFYZ2020853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4253f5585e0ea032755ade6e2074aa4b14dfa0c03b23fc4cbdbf46215fc9ff7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFYY2231281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89ab8a4017a4e1813dbfba32d67548725f682ab8a952b0bef85bbbcb6ee7574a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZFYY2231282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989db4a5994471074f545448cba4f6380fe7dd94418f4b890fdac9f14b123d19. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFYY2231286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8ed3898977baa0626a8360f047445344e3cd265192c9243d208a0492f6e4aa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFYY2231287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ab6455c37fb7c02713cf29f168bd1e8e5b99d6dbd5c04eddaeac19c977c80d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFYY2231288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f88d791494c99fee2e07ccc82e25d7a26ac3ea0b4d7cfd6f33a5d7af0f93177. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFYY2231290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f74468d791db711ed14c03eefb296bfed73b64b74151f92c3dc67f1ca4e7fe. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZFYY2231296.
The Freestyle (feat. Bear1Boss and Duwap Kaine)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa18a6e8490ef40cbd60667ae9ce780a362b85cdc831ef18c985e2ec08a8a9fc4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZVM32200066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x144a9eed282aadfa0c55dc6d90373c9fa47cb85ee90d469af1e608c3161afe89. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZVM32200068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6795bf56152efa4009321aeb2556dc19dfaa7f435aaff4ad3a462d91c8e42c8. 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/QZVM32200328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76982d2d483394099431acb5bf44fec505a64b5f300532f0d2de9416879b417e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZVM32200323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3eaab7ceacd7d6a16f2da772d8b2669a9ffbc1a747a975fe55b58e2805532cc. 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/QZVM32200322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76982d2d483394099431acb5bf44fec505a64b5f300532f0d2de9416879b417e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZVM32200323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe329cdcc7abfc230eec910d5c40f1705417c5301ef7998f8c3fe389e2a8d92e. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/QZVM32200324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca59021be6a2c188800ed8cd8a3653ba6ac8e88f973b6768c125350893a32b05. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZVM32200326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6795bf56152efa4009321aeb2556dc19dfaa7f435aaff4ad3a462d91c8e42c8. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZVM32200328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc69d6b001b2854fc006900a33f69151d3908afb97a7530f513e48ab79b62352. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZVM32200331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe39b7f13ce0a07726df0ff64d64d728d00ce1fe3e887c0a011b16fafa7a150ce. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZNWP2350549.