thumb|Surface waves in water showing water ripples In mathematics and physical science, a wave is a propagating dynamic disturbance (change from equilibrium) of one or more quantities. Periodic waves
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 0x757d6458787e4bfc4df4df6fac8e318b87820e55d5210adf2c5df5e56d55fff4. 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/af6c0a17-4469-4390-8e14-950f5428f5ed.json and https://artists.proofprofile.net/proofs/artist/af6c0a17-4469-4390-8e14-950f5428f5ed.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 0x6c4bd876b4a71d03bc024a1748c98c37f1a49797bb0c8197bf2da1dc79769fa0. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:05:09Z), 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/UYT142300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0dcf3d3368e63a47f2f05bd743e65ac92f499a3d163c20c10992370af982b17. 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/UYT142300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca66d683ec0cb7a33c230af1beccd5ade573181073a50c65235c7ed1171b8c62. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:23:36Z), 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/UYT142400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x149efc8bb5704c5fd7505980c2fcf0360a03972e503f61f5fff016b9a8c759d1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/UYT142400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae8a0fbb46c83af74cf08b62b70e8f85ba3a5020dace3a5953f446cd1a9c04f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:04:04Z), 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/UYT142400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefee8543349886bc7d32d78003fae0be662e7a54de1d4435be79e03c098f7487. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/UYT142400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591e25696e880d15d61214f8523060868cc1393447f19665b7a3a414199b37fe. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/UY01G2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cd99926e3dfaa59559da4183676b6a11f151b726f93ea9c9997dd645d7cc8d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/UY01G2400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dca5369b95fad06b2a46317c91d5903e6a53ba7bc2e4792de3d738947e2ff15. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:45:36Z), 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/UY01G2400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01453767f5249d39a6fa60e6acaf393d4e3433fc676f4392325c712317b94803. 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/US3DF2462252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd831b1b98d3a7da33b85bc3598b07845f0c2c0e309e85d5b45c5b430a59f335. 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/UYAS12300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817149b66c7a10511702f94c3e523366e6662db107305b26f656b5dbf71143db. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZNJW2492612.