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 0xf11e2ef561c3952c87cf3d1cd21d9246c2db7bbd10037ec53439a3b224730211. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2cd8f5c0-a2e9-4617-be21-ff7d0d3ac022.json and https://artists.proofprofile.net/proofs/artist/2cd8f5c0-a2e9-4617-be21-ff7d0d3ac022.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 0x6b75374539ccea4c31a8ac53d57f90448bb98e5882358388668ad6294c69d918. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAGQ2265378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0406bd711d82a5faedff98d02a7b0452dc931d01af981ae5274604b843b6c38. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/TCAGQ2265399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7f1d7c3f36d1934af964556bf0e745a4fdafaa98eb783b3c6f1dda03975e35b. 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/TCAGQ2265420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4f3eb0fc7c4d005ff781c671b64b3dadd5c76bc2c51c9745648599f08bf9ca. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAGQ2265429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x187ae897343ed68cf6c56170df199d7329bfb744559c567aa7ae94604d8f3990. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAGQ2265445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x547cd96acf5b8fe536856394155c86e9a5fa1ab0b53c9cb80e9c406339469f47. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAGQ2265449.
Gyönyörű Nagy Neved / A Golgotára Gondolok
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7670db88b02df60d0b77f1189196f56be663ef65572aca39cb1c89c6bcb0f678. 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/TCAGQ2265458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5930eabd65a71e60a17dd7f4642f3c953a4fd4c15433283ab0a8afb051c2afa6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:39:32Z), 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/TCAGQ2265463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88aeccf0863c871526260fd66f58ed670b5cd469fd1a127a5ccc749d5dc64e9. 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/TCAGQ2265481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbff64c1ddf06c9d7e09e6d20bf8b82874c13bc8150430efb8dd52df73bc146c. 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/TCAGQ2265491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fdc35a8be207a866b98d0934e7dd46c3aa903b9176cb47e87936121e3d152c. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/TCAGQ2265502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe675430f501f0ef212298ae3c401a40b8f9f03978308c76415c68cfc806448b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAIZ2411247.