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 0x424d9abf81de87fcb4489405494808c6dff9a3223627403c3becb296727068ed. 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/dea8e26a-c0e5-4074-bc41-88763b3d0f1c.json and https://artists.proofprofile.net/proofs/artist/dea8e26a-c0e5-4074-bc41-88763b3d0f1c.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 0xc3c1802749f313358982f759094137ac2905165c807d6467f884809acbfe2c23. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:18:19Z), 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/DGA0S2497553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d8216bf4d9319801535446ffc936c2a8a686a30b89a91565de57bc00481199. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZWBE2241900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c56c4570b4873bc159e523954d071de59c8af224a0307ef667e925efcaa43fe. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE6XW2277022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca6ff0eac246d1cef6efeb30cb86b681a02fc8880a1ead9b2dec7efd5d7c789. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZYHM2409964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141017c302280fe8418dc7dc8cc950e1f718cd0ed48b2af2ffc9567b0814c208. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZWBE2288502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96180516977846826392b9176d877c12b3342b56f02947b156ec3e0784cb3ec8. 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/QZYHM2343925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c322935c5467cc17dce6938f7929f0d03055c83d2822b4827dcc7361529eb6. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZYHM2375543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f66a77d43fde59e5295bd55e668ca37e8b047d0bbd938389f7d03b82ee0212. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:10:50Z), 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/QZYHM2343930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5c931765842808fc2ec5266a07b01592f54fa194122382c4e5981ae262fd629. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZYHM2343933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa642b16b7a3b63b61c29a37d6514315cecbaedc8b3a496b863cdf3c7b3358ae. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:55:57Z), 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/QZYHM2375010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f893fad7b578f346a725f2f74ba1c02d7fb018306cadc83dc84226bbdcdc26. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:08:57Z), 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/QZYHM2374993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8843ca3ae45d0edf2fe03a205c2adc9b816cd56cd272c28eba57e6ba1741407. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:20:39Z), 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/QZYHM2407871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83875a8617cc12fbcdc1045bda3340f2c6b79ac8be6f484cfc67c2d258bfa238. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/DGA0T2401574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a2526032332caa25b32d718c62b68e559f6a74c8a645967882874aa847b93e4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX872558725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb988bf54556329e389755b4fb3e9969b9b956e9c8fb4e9f16391be855e75eda3. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/FRX872551424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c325c815b12bcea314e177ed4956a4d9a3a6870b0e61a2502159d39adfffee. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/FRX872559708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe97092249018e4ad258568523dc23d79570243c82d456b6a75740cd650a125. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:25:50Z), 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/DGA052503183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4b2832d6662869a3eb158b22cf585b5e08cda44575281ebea6d0dd985d21d0. 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/FRX872595902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38186cd9c88ab4e296cc0dae1c24e3e377ff039e558d254452f197d269defac4. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/DGA062555754.