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 0x0e023d3a84c9f578b5ac9344a9de99bf9130de7745c266efc8eef4341095c96b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c56acbde-2acb-4ffc-8d80-d2d939550750.json and https://artists.proofprofile.net/proofs/artist/c56acbde-2acb-4ffc-8d80-d2d939550750.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 0x0d1b7ae09bbc67c1566b01aa73257bc7bda92d2ef9f2117598c126b6135a9e1d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZMEQ2204416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00010e3dbb42586e05f8d7aa5e25c05ce14f624846e012d492c56a3371c34ba1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZTAY2369277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4be97fff9a0909e416d9305402f92a3d5b857689171147c1de39c2dafe519f08. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFYX2445078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a59bd679cdd200935a1ea773bfc07b5b6f956529d74d78421e92a320b71c99. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMFMG2335069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802b64535a0755b7f71cbb2ef1037faf18a796a5d5cc5e725c70eb6c4733b497. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMFMG2335073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ac29759fbe8e516416355a4a748cc1135b58ea084a31b9258b57df4598eb54. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTBA2336874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8ac3386a76181fc4dd8395f714e40c9988c8dd363563ba10dd50248a488aa3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMFMG2335077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00010e3dbb42586e05f8d7aa5e25c05ce14f624846e012d492c56a3371c34ba1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTAY2369277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e6240a71726887705ed9b775f2c8a96a111077bf15515a17b644319df1b4b6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMFMG2335136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ac29759fbe8e516416355a4a748cc1135b58ea084a31b9258b57df4598eb54. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTBA2336874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9feabca46c805353d02902725cc060417c954e5b8ad7e05450d6ee48f2304a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMFME2361175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244244bdbd5ec414119d2599b79bd6c3cf577eec6c6d54fef016ce91e2ee67b5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BK4DA2317112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a9d0d17399c396ec72d78ab2a85fa350a448bf67f4786dd22d7f2e55006650. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMDA62386643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f741668df2970611c9c9a8231aad5ccd13db0bcabc70e96d2f6a9845c546858. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G2324044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa755472bc2d16f9d47d797745d1d8ad4bd1f428dc42e75d3291d74c22f98db46. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES75E2303635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ab92bb2e0d3f2704b50f8aeb707462ad840c19a6f1caca2aa7c62f65cf30c1. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZNWQ2396448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d943a4cde41f87cf03b390c4e03a8a6fd443fb08d4483d26c65345de2c0923. 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/ES64E2305821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd761cd159a37e83797a2e2ff25cee3b152da0749441f72ff6fc6a9284eb6d113. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6K2354106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59e8d4f0e19c6a31a735ea69f3c5040926bb2190a4e2fd8cfc5581a9e645b33. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6M2397046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e8d7b111e8b2f899edfaae58346e43cd223ea9fe7d4981e44cdd9d98f64a5b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BK4DA2307034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76286eee480af7bbca185aa15036abddf9ba1e7fa7433d2a5bd09c588dab4c2d. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/QZHNA2352768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcd9bc9c1d1675ce68d9aab4360e5a4933814c75ba5e4288bc137ca86b20692. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES64E2301219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811f17dcb1a30aae26e783290cb992352a7b63914008de99743ad5a01d95b7ed. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFZ32302820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaac5feb75da0d38ed0ce9b06d752f61ecea58948688758b3e3f20c495646146. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZW9N2216001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe6d6e5f8808088e04e1e02874a3f3fbfc8e6734be0888e759b399c44242e58. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTB32287172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1f08829f0be05fbbf92c5fea1bf32f219b79b0e9a1e5f0d1646a8a07e60a5b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES71G2238338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0c35c265154ffcb0e1c4f188a2e0b8d0ddd69efd40c35ab51a448bfa1d1686. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QM6P42409130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f59fc9fd230a42a14b036c53de5d111d3c034ff30cc88268fb242b5a9ac95f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6N22457992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce893210a40033e877fcf19e4104163806f942b5794b7183efafb65cdafe6fb0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHN72464643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x404c812f41f6e689b6ee5e6299ceac84ab83efda68b66f3401cefb47c47aec14. 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/QM4TW2413421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef2f2fbf3095ec8115aa87ae45a0d8e85102f74e4447e615f2367fb784996b2. 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/ES5152101153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c73750c3e7dc99fcbae45f25c74255676b9e4fb121ce0312e370b925f4dfeb2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ES5152100258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb972cf9d624dcfa88b169b62adfb767e42234ac6e85f41c33ca5c8da9698853c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ES5152101156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbb3d00f3d7f3af4ff47e0157fdeed26b0440e30bfaf2786486a890c00ec8ae. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHNB2253861.