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 0x8c00801549aa3f31d8dd63aefa53add801d28cfa681be09f91f35ec04accadc0. 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/373edd18-2669-406a-a6ba-c74a1556f990.json and https://artists.proofprofile.net/proofs/artist/373edd18-2669-406a-a6ba-c74a1556f990.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 0x2bb107b0b4edea325774838ae08c7c67fa82f225565bf31550d4f23cfa742ccb. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZTB72550746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22d57c3fe92a3fc0e85fd049b670cdeb647b8ab11f560e20a38eaf172e9ca61. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTB82563080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742e9d99bb48d93ece9b8455d5ecf8403b900dd380d3130d8333e29cc2c730cc. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZTB82563081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd60892542c2f7d6f9e43d0c058da583db05c39ce293eeea91aea09bc150e7c8e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:19:21Z), 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/QZTB82563082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a9a10f646a3950ffc4b6708d26471ad107d4b88befcf0790704206a267ce11. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:22:31Z), 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/QZTB82563083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df51d57afaf0bd10c088119957b8c7ad19cddd4bb228c50bce018de76ca053c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZTB82563084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8138126250d80685f3a70390670793c5ff09906aa7d84f9f5c311cf819063941. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:06:30Z), 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/QZTB82563085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215c79a61f544f21748b121407ae59a6b5b2c11cf304476bf1d5390f9bc6cee6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTB82563086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bff9a7008a2313e3f9eadd91d741d32e2ac3e2bd7cf28e579a694773dc19f44. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTB82563087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb371090e2a95deb796ba2078c4d0d48bbe2b88c60e49e42c579b32683fbc920e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:02:20Z), 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/QZTB82563088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b89e162bc08045601284a2adc14849fbbfb46cafd25cca36491816c83ba64d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:27:32Z), 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/QZTB82563089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8821e21f3a38a5e5ed02ebf724a8f4100f8e884c7e791c05cee2b314c774e9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:37Z), 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/QZTB82563090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff948ea45e761d4b4263f65608e50860575cdc477b9669997e6bb23c6dda951. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZTB82563091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fdeaab39b0eb7f4492b0af98ded58b8cb7808f97598b8081f8ab763e16acc1e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZTB82563092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77339dee278d1527cfa83ef785c6257d33b44b149e00027fc654af20befc81d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTB82563093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cb1767f70b42148e2e59fd8db18b0125300891b1e29d21e861b6653d380033. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZTBA2522487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b397b10b04e76aa6b8aa62f2b93a1ca89da898986953a5f8c86947836deab17. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTBA2522488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27cd265d7789e8bbadd17b0fdb28a7717dc2f96534ce9877189d00720d0f829. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:16:32Z), 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/QZTBA2522489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dd66708011042a33b6e0590624ca93a7835d3efa570d856e983951eb213958. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:17:51Z), 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/QZTBA2522490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774c3229d4937eedaad3e58969b6562e0adc2f5b07732170900537ea116a5645. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTBA2522491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb9346ce9bc4d87c3744d7d91db76b447a1842d688e1b977ed98c784ca9af85. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:29:40Z), 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/QZTBA2522492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf18484f10fd5343f7b195546930e9e680164e36113811af95116b66172931245. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTBA2522493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e1084c7b571f222775bc27401120f16c1ed0faf4633f20b099c0aeaa50f889. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:24:09Z), 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/QZTBA2522494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce01d31b09ba6d2a4dec1520767f3670875271f7f1fc8e658fc090ac545c2cd. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:32Z), 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/QZTBA2522495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c47fdde74c479ae5cba9f076ccb63c279bbdb38a070834b7fa1d03166334709. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTBA2522496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b486ed25f19cfaeb4cdac01086c0ce8263b2c504961bb87301d0150c382964. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZTBA2522497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fc5bf63cdff62264d5ec5b52a93240cd76ebf78215b925ee31b452a3f233c1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZTBA2522498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb9d6b4b906e76821ee4a0ca916e6e5d23932fe8fd0764b727c8d95714335b5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTBA2522499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c08cd492d34fa686b0cd8e5d1743893220f0a85a47dc2b7d5d343a30cb8a3f2. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZTBA2522500.