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 0x360c6d0284d13d952a6a804858ce57663c250afdc2f2b4a0030da14622da1c69. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa97cee8-516f-4c73-ab9e-b899acef21d1.json and https://artists.proofprofile.net/proofs/artist/aa97cee8-516f-4c73-ab9e-b899acef21d1.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 0x733ca02ab9c7bb378b6095b6079aa50de590b29230b8b656b6101fc2368254ef. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T15:59:33Z), 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/SEVVF0902009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13017e9746649b403f1c9eb4e3f6fc20c0b1f687398141f9976e74d21b81512. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/SEVVF0902010.
Fill your head with Rock - Old, New, Tried & True
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ea1aa24e5006b5e926cc3568a3e6e69ff6f12c492cf34d3e3867de69eef103. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/SEVVF1003205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965b06722a535f595cce40622cbf3fb5551b621fe4a8d8166abc02c6efca8448. 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/FR6V80117805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed28cc427b9033bd4908046403800d6b55f18728477de3a36b418546be8f352. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBNJ71300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b46f7078d60e5093645296115f5836bcce14d2a7a1a902d2e0db67a93e60d9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBNJ71400880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6acd6922910edff3f2f22ceb8f1332ac92ebd31612bfc212d657c15255456f1. 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/GBNJ71400890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaada5b60892ddd9772ec1f4d324d5a506ee66b59e9c2e27fc4bfb3189b114d2c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBNJ71600529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4db9564073d270a7bd46b488aeb152b2c5a8047ea65a37e95c13c8ee2ed1e96. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:36:30Z), 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/GBNJ71600533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67aea2e0730a862173eebe91f19825603eee55bc53140da9fe1cbcf8320e6050. 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/GBNJ71600534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81abc0da37a9ff61ba584311d93502e82bdb4bb20f50b95216e8707d3e6046a0. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBNJ71500356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838c7f988391b1cf9513d12a8cb989aef54fba87a55581320e8e24a60dc95d2d. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:28:34Z), 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/SEVVF2300702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f86b2478d6c6cdd1784ab254f7a0e42649f8b6e7a4722a574b7e34d9ed7920. 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/SEVVF2300705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838c7f988391b1cf9513d12a8cb989aef54fba87a55581320e8e24a60dc95d2d. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/SEVVF2300702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2698ce0ee22678969cbe9cb9459e5dd48bf41fafaed5d5742bbdede711792fd. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:26:16Z), 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/SEVVF2300703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f86b2478d6c6cdd1784ab254f7a0e42649f8b6e7a4722a574b7e34d9ed7920. 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/SEVVF2300705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bb85178b3e02917317a234ae3e43ffdb2c7a71baf40262d9f79da880d4c06e. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/SEVVF2300710.