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 0x7a7f4c63a88cb44fad8d2843ac1d0b30d16fb66b0c804420e3ec3b698de8652a. 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/7783fca3-d74b-4031-9051-6621e5ebd1c9.json and https://artists.proofprofile.net/proofs/artist/7783fca3-d74b-4031-9051-6621e5ebd1c9.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 0x71d45feb8f46d249363b39911bdcdbe70cc322f4b6e77b4547ad0a9da2436ce0. 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/USCGJ1759186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d88e1d54bb8a7d4e2bdb3ed7b75ac15aa822f25ad1d0da2901c97b2d5a1f951. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/USCGJ1759187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94792dcc8db71ff334e6daf90606ff072332368b606e207dad835899f324e336. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USCGJ1759188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866dbdc1519f793a784f669a3a64182bd8f7d4abf3084409f82e1c140a97e108. 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/USCGJ1759189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802a6c9420d2d3d3133d2189e2d4b30e171d16ad2c069aa83581a3a7c7b59ff7. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USCGJ1759190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f4a79d9533fe44a20fd90345bb1d547268265f7b091bbc5dfaa1a667a50cb9. 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/USCGJ1759194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c2ae0d8382e711c2b0e56fb96cfd9a11342d82f853e3bb62f79d7c7ccb9692. 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/USCGJ1759195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3f0f25e9f1bee76b431c10d543075d7f6f11d86b6986ac1f1794c5243f6255. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/USCGJ1759196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e39e80d817e020ce6a4826a9927460532ea24cd7fa6142ef72feab0c741a15e. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BX8AV1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1761fdc146548e425483d79321d338a1fa4fadce49df63d38d6e7b845638a9a9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BX8AV1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1dd697511f98f0c2304b472ca5a20ac433eb30ce6c712793f277f921531a1fb. 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/BX8AV1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96179c7f324d97c467ad98b73aefe0de1626f8e178b1d22a01ac3be15cb81075. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/BX8AV1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d0e5fdf82145af711fe7446031149084e4cf85fffc2d7d4a1b43d655ffc42d. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BX8AV1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f4919a00cc2c7338cf551c0c9591555c38189c2be54ba15a3b8ca20fe0aef7. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/BX8AV2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c35ec73574ce60169b105f7544dc63c7a13b14a52f8b186b3946e7c50b5e855. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/BX8AV2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831b112766508f76b0de1825506f67f548544459b2413a298279f9799db33784. 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/BX8AV2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc941f96924a6214b584cb9aaa6a8cf628935c0d839eb7edd8977ecd1183d30b8. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/BX8AV2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x068112b78ee5838de1aef81f631ef339d27111bb29bf63be589d4f0da8fb3d5f. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:14:14Z), 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/BX8AV2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69e5d60b26182ec27374aaaf492b2cd9d13b78bf52ae637874dcdbcd1698949. 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/BX8AV2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51fe28088c0bdd61da708d032cb67b51a98182e5d374668537a8bdb8728b263. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/BX8AV2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53099f40b93937ab198168568b294cdf19cf88f659b0b8dceae58e02c857ebc5. 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/BX8AV2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b7bfc762f7a53cfc7fce3fc0b6983ec3ac504e80d1f2090e98a026084a6b77e. 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/BX8AV2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f698709740f6d12fe440bad5c658260e575c58457b1dad5187d5c5fd6ee4eb6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BX8AV2400014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b9b5f6c0a4c04775f5c29d7225f33ffbe9ba20ed795577e49db4571aa06cc4. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/BX8AV2400015.