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 0x5fb08626075b599aa5f8ceb0b6b12d71eb790cb2484f89dde03e7d4e8dd0cf2e. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8bc0c30e-3367-4bf4-a7bc-a9994043c650.json and https://artists.proofprofile.net/proofs/artist/8bc0c30e-3367-4bf4-a7bc-a9994043c650.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 0xda0f02ff4a67194e6e87db0326ea8e9fb66b7d3dac2fb8e36fc1d89b45ac1535. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/DEWM92111108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6445df8bdb6f81125f304ecaacf8046609a17b50dd78c54ab5b09c0c5c1764c. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DEWM92111109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc040be1a215334da4777b6f97889890e30065d943f2ea72fcdb0fc955a53ec2. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/DEWM92111110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28457e15c2ca555cff13123f72b82cd617a83432af110b466d49c98c6892e0b8. 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/DEWM92111111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f01c856b2fa57fd18b79b8764ca319f6b086eb49092fb1f5a878eca01197379. 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/DEWM92111112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf22f9b959989e882321fab6cf961fbde8858a7b5ad661c6e806cf39c3149b1. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:04:37Z), 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/DEWM92111113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37673bf86bd6c7d28dd090e34f0d4d3a970217794a3a915f4f27e6b447c6362d. 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/DEWM92111114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f44290a6c6df075b45d2d0ae3536dfc6ddc2cd75d65d86930893baba4b22a09. 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/DEWM92111115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0153b1df7f776be1c16f5acfa9fac6a37353e1b42bbecf8776e3ba1c5ba45e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/DEWM92111116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2211495a21d22dcc972fbb198540194c57b05a09b4b37d2d95d889c88c9092a7. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEWM92111117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595877b8b27bd07693b10e5ba8bd755317054bc398c8bf48d993d6c857149cd2. 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/DEWM92111118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8420b1a8a2b4c6a339c1e90e1530bf13a1591d56117f257290b3dc53d67a271b. 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/DEWM92111119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88835acdb46d648cadb8ac66f158f0c5b0a67882fc823347c8afe704ef23c8a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:04:34Z), 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/DEWM92111120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5973621e0a7dc095a80520265400077dcd492e055c14b2152d5d913254e97628. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:11:24Z), 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/DEWM92111121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc925394b53d395f794c731899affe5722d6eb4c1bd9976f39ba954fb33d8554f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEWM92111122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5609a0eeb605876ed89452bc4fc44f076c348064a4b9b6a60693c4be5b18f4. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEWM92111123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d46af5081111eb0fde563dc764662740ef5fe275576d8c2fb99846cac2bb330. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:32:14Z), 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/DEWM92111124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c81fa4e39a98803ad33d4c7b1b71953719ae1c9a6266da05e65bf6d2208d207. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEWM92111125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9c21e80dd02e975a73ab59b0b26b880d3ad1ea2562cb5fd75d34c8e6503356. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEWM92111126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4bd1a27423d7178d52e471c9b425ad7d1a85e6fb9f4d6764600bf85183ce677. 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/DEWM92111127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da43c7b6fcb06497eec65b2c2e8587283907d2a17afa4e4b3c6f9e5adfdd3a7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEWM92111128.