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 0x098a1a7c6d3942f09ed4e93ce1d507eddb1f3b08c94945a3527620291c7f4e2e. 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/824881fa-40af-441d-bc20-cf64b0eac558.json and https://artists.proofprofile.net/proofs/artist/824881fa-40af-441d-bc20-cf64b0eac558.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 0x66db383e0c9be56c156a98cef58b70a9888c2fbf1b11a9ac1200723071b60b6b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:29:09Z), 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/FR59R2230807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57709391de0762087beb5ddc888ff84301c6a80013896c778b3a6850f2ad721b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/DGA0R2310522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3273ddb3085691798de52448412b7b8668f85879b505075492a2768000d78e01. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DGA0R2310523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2cd0428e5b8abcae2181e2e49387965d5761c4a4eb9ce9ed55071f8b40165c. 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/DGA0R2310524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ab5c341ac274d7929224f0a21d6bc023b0ee724e7dc8cd1c17b5b043578d51. 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/DGA0R2310526.
Sans toi / You say / Majesté - Live Acoustique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d3adda26ff32ecc7ca3abd00a1a03a0be89c56331c4da9c903f37314e3ee7a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CBEYJ2431727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x842befe4637f681dde1ea8b9b180eceed5495f11c07ccc15cdcb811b3439a67a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CBEYJ2431720.
Tu es Grand / Plus qu’un chant - Live Acoustique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d22c2e05cc4db91980c0ce9868f4fe9d46bb77fe9844ca476aca176286180d. 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/CBEYJ2431705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26c0cd3d9264db426d84b62631dd1c797a54065858cc8dc29fb8578172e7ba3. 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/CBEYJ2431731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e850eb0b3e00aed5fa054608e4f0ad1c20ece7487efb90a0dad85f4393de9a. 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/CACWV2525854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa401f03355885a6c19294575349bfe8af470e786f5639ead102b392f68e1b9b2. 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/CACWV2525853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85e8c335312ea15b2ed6132c8c418aa67fb11804b166581fd56a52d95e0f23f. 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/CH6542565569.