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 0x64b8f3ec502917d843fb08d92d63580281a8d3a90ff95e12fb934e4da99520cf. 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/51435246-1fba-42be-8dd2-14b1436a2d7e.json and https://artists.proofprofile.net/proofs/artist/51435246-1fba-42be-8dd2-14b1436a2d7e.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 0xc540e58624b3c296dedf77e774d85fbadcedec233fef9581d2e50fedc1e092c7. 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/GBEWA2206350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a2f9500cc212e2d8d7e9f16b967636c0fa4ac6bcf376bd65dacf4cedbfbf29. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBEWA2105582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d754215e9e540c55c41b8819726ddf133abcdefc59d9b866407cff58fe732f1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBEWA2105570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a2f9500cc212e2d8d7e9f16b967636c0fa4ac6bcf376bd65dacf4cedbfbf29. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBEWA2105582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc540e58624b3c296dedf77e774d85fbadcedec233fef9581d2e50fedc1e092c7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBEWA2206350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e884840a1d162fa8dcd42d8cb7a258933a656fdb28961e3a19242da8e37d05. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBEWA2206631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a05ddddeb60bc1eb3caab6a0d5e2c1a00e85bf1cac0cb3c8766ce5a8c504e77. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBEWA2200740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31728c09630584e2a7d6d244625606867871123507d80b57222181255b312b75. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBEWA2206250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d754215e9e540c55c41b8819726ddf133abcdefc59d9b866407cff58fe732f1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBEWA2105570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d754215e9e540c55c41b8819726ddf133abcdefc59d9b866407cff58fe732f1. 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/GBEWA2105570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a05ddddeb60bc1eb3caab6a0d5e2c1a00e85bf1cac0cb3c8766ce5a8c504e77. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBEWA2200740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d754215e9e540c55c41b8819726ddf133abcdefc59d9b866407cff58fe732f1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBEWA2105570.
Survive (ABGTX2022) - Sultan + Shepard Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99415142a4f762c7ef78054b1630688ccd2234dd0641b605c881c9355ae0b9aa. 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/GBEWA2207705.
Survive (ABGT472) - Sultan + Shepard Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd334b98ead664619eba76a3670393223c7332dc9ed32e24e26e103c5b71f4436. 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/GBEWA2201402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf153e176bd82d096baea584cee7ad3af510cbc822401539f706d9173060944a. 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/GB5KW1501118.