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 0xaca8fb286e7b21384ee45826f72bcda37525adc13284d0cafd1bd82bc6b9cb05. 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/092f57f9-e8bc-4e67-a1aa-e63168b920fb.json and https://artists.proofprofile.net/proofs/artist/092f57f9-e8bc-4e67-a1aa-e63168b920fb.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 0xaa0f30c873a6a3b6cb5a0e34161fc84e2cec824b394115554ee49918351949de. 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/QZW9M2352380.
Not Tomorrow - Silent Hill Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3209462a750b0c33759ccf46c10c144f71e2d4dc3fb217d4f0381a53dc8f1efc. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GX5MX2304022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a90af203a3d0a14baef47bd825b559fe22f356d95bfe5e4518d6bc78fb2450c. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GX5MX2310615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc01a8ac39205a391112038c9423e53e12e2d3f7300e14dc88dac3637c1627d. 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/GX5MX2344045.
The Terminal Show - Silent Hill Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec1a260e8adbe113d7a0955f773a0b1f4fe31a0735f6559c6268a1f8e0af1d2. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:03:50Z), 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/GX5MX2350325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c8c0ad744665955f489f4fba5092535fab179da3f27dd6216c8612338972b3. 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/QZNJY2469820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148779ad8566d285d994513edcddbe346175aae59b2e2a110d46afb0ccfed12c. 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/QZNJY2469814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d3ed61673b569dc4cc9efcc7b58b28e3c5043474b126a6df909406d1435c76. 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/QZW9L2417889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d45b4670cf0bb2ff5a8e51175f77c3bd0e7456fb582d1cf96c96b07757dcc7. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZW9L2478304.
Lady Justice Has Been Raped, All Hope Is Slain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb69821970b3d098532c6ad4b9cdb35c3c80fd2a949d9cb049fd5a7ea7247343. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZMZ92523276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5135c48f7e74cc0c413090061870c834a4cfb634bba4e0591fd0fe8d375c9651. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:17:40Z), 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/GX5MX2321068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba66e15e32aa355802ab5f981062eb54d7debc80dece77cb4498a1f33a1ef089. 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/GX5MX2360055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3209462a750b0c33759ccf46c10c144f71e2d4dc3fb217d4f0381a53dc8f1efc. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GX5MX2304022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a90af203a3d0a14baef47bd825b559fe22f356d95bfe5e4518d6bc78fb2450c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GX5MX2310615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3358d2f394e1f144637f119cc8c8f5ba6b2eb34ba877a64aef88b1a3da997c14. 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/GX5MX2342032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f23e09fbbb2beea3ce28553bf3d1c6eef40db21a3a6b07980b89368758a5ac. 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/GX5MX2392499.