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 0xc1d020855dc0cc7bb3b76dbfd00101fe95720ccba9b138af260af3c2b54d6905. 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/169a0b30-1f6d-402b-8dcf-138cf6697934.json and https://artists.proofprofile.net/proofs/artist/169a0b30-1f6d-402b-8dcf-138cf6697934.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 0xc678ee4ea29ca98a086c6e10649d383c3f7bb8408030af35f1f259c57b0c8a44. 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/FRX762045579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703e4bb91a7b8a68d09c4c207861505d389cbae0fc8cdf6c1f05a97c948b0166. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR96X2024599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80580e82b50c67656c1cd2d37093f821b9be821fcbaf3f07f25269bde4ee3fca. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRX872020495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c179febad974ec72607e0218bfa6dfdfb6181d487cdf77f881413b01a147575. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FRX202018952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd324bdd67f5e5aa9ff476fb4e39b20b8f26bbc95ac1ece39e09ee87d613b2169. 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/RUA1D2071482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d10cf25a825ae9fba8d8d217cc365a46fbc0d77abc67253033b3c914fbb0f0d. 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/FR2X42175789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a2472039b197b3130387deb6442da403082c3c30ebe8c5dd400044da030f9d. 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/FR59R2158054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16957e959c74846fe6184f64c0f9956245883da5d39b442a3a2777bc26e95bfd. 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/FRX202183760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d6dcbf6de90f53e6ba45db712a4f7f3d3a6f9eeae08b1bc84b5fc8f436a49d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:09:24Z), 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/FRX452147790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4c3b3a0afc30d1548df37f611d681f86b794188c12121d56a7584d655c383c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FRX872197211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108e24c6cea889283f787c94e383627202f29a98ffacae440f252275156e5023. 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/FR2X42289865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b4766b9af049da45023b3860e37bc46abd105e5fa68a8e4bbb7ae06d1d540c. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/FR96X2284968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66dd3d3b5c621b3a761d675673cd4237ebd928f01a929122f7ba3858aedc1ac2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:21:57Z), 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/FRX872250548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d92b50ec5ef4124606ae241e374da22461ec24cc30cd956ac4d551a3ad96f7. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FRX872250553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe327e5c03e40d44b7bae02c4e0b5a39081f90a10a9985e7b90e6fc8d0dfb716f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/DGA082233197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1570e81b918a1b57927345cd1be693309a08aad879604857f29b78fd8fdb1f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:47:11Z), 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/DGA052313998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b51b51f0d03ed191e363212f49a28eb8680954ec320b6e67eb9ccc6721843b. 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/DGA072340985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888212e8c1b47e660d4dd80c09625c2b27c1863419544e0f1fe5aa3c933b2a0d. 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/DGA0P2353037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf0f82b4617aa5f0a4ba5a013588cd1fa62e15dc40e01e05051ac224a9407cb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/RUA1D2446423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aef66e163f678f15bf0b28ee7a6cf2575b2202d7486d1181e7b76f81d921ecf. 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/RUA1D2446424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4688817fd21115d05f4522ae547100a641787e2720313221d2a994ea128625. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/RUA1D2446425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf086d0048cd7017a02c166c3b76022f86de9e7f3e2519f38dd153fc8163a35. Chain 2 (Bitcoin): anchored in block 957961 (2026-07-14T05:58:47Z), 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/RUAGT2426675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63d1b610dac67d2e419ad3a1a79ad33daecbffa04c36fee38411277b6a682cf. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:40:28Z), 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/RUA1D2540529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e2f4adc10e8b2ec5ae03912a95a84e6f898d55a69f3fdb1547e25a72c11a69. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:31:32Z), 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/RUA1D2557963.