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 0x089b0559dfb45873b056e45c3af4a9919f63221a388c9632e1ee7ec0ae817556. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/606f982e-053a-4d37-8a95-186fab02f722.json and https://artists.proofprofile.net/proofs/artist/606f982e-053a-4d37-8a95-186fab02f722.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 0x963c518bbb8e24b596573ff38e2dc6ef20e7edf8cac36b3c31ee0adf5124adf6. Chain 2 (Bitcoin): anchored in block 956748 (2026-07-05T05:55:59Z), 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/QZES92547141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c853a350052fc7e22c6191aef0e9c443288e7ecad8265b43c60bc52dfd9b07. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZES92547137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa88c9926a7475e2e28f66404fc6d0c2cffb85003034dfcf005cf1ae1af0aa794. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:42:19Z), 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/QZES92549350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1e1d0a7c44471ff3b582dd8a9a29a9d1d4dbdc7589c5d2b918b2e332e56db6. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:38:56Z), 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/QZNWX2508824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea057709c2498c83a19703a903cbd8609e1890c210cc47d8f24ae4045b9cf9a1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNWX2508793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe605a7dbbb4cbd79f23d7b35acdfc5a89c05369022f32b5a420f25155e9c3019. 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/QZNWZ2516757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ec073bea1acbad7b406d33f910d9463155582d15011310729eff3a69c5e783. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:30:26Z), 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/QZNWZ2513542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa61c726e0b5b1506c25f3bb003ca0c90b24747cc40acf118ec3552c7a13348b5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:19:42Z), 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/QZRP52514112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe4b3d3352ef9e57bc9f7f819f77713ae6a42518544534e9eb15333674a4337. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:54:16Z), 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/QZRP52514113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db0d8cc424cac467982bf79a9413e8c0c53ba9c3b8e2c579414e9ce954c95f4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZRP52514114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5177b83ab43abd5f2b11d2bc2bc910028de316953668273e8f3b1eda58963e33. 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/QZRP52514115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343459afd5c9e10413c14daadbecb2eab6ba8f1fd3ac82a0f716baaa0f69b512. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:35:38Z), 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/QZRP52514116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8364c735fbb73121c5a9c68281b86ce927b1f8525aec4db3311696dd7168997. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:28:57Z), 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/QZRP52514117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe04656cb370cdeceb06271bcf136a9ceaa78e4253b0ca069621ebb704ee6a0f. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:42:13Z), 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/QZRP52514118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a8226ca702011c77d09b12998080b323495da2dd2aecfa101cf46258c07a088. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:19:57Z), 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/QZRP52514119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd30f2935fe1f8f6bee2f036d3ad14afd3c52bd564aceecc63dc8dcd1009ff16. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:47:03Z), 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/QZRP52514120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666142e52a72327837aa87083b3b0526a0ee9da424616476b38cd86649eb94ce. 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/QZRP52514121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463925c85b6ad47cce46d153a413aaaf99f7ef01927fefbca2f8803d8dbee8bb. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:05:09Z), 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/QZRP52514122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cebef0489fa31945a31f3f59bad4f21a1e78f30c6cfae8a1b1e7b883b7b4d3. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZRP52514123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9399628ff1f74e8ed80797cdc52911deafceb67ff8ced95cf8388f59bb8e14ef. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:48:57Z), 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/QZRP52514124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38c3e3257f2a6f1289f5520edd03ea9de64d6d3f28e422c54a010bfe94c048c. 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/QZRP52514125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2916f4542d1eaa13b58691cd3a6ea896d38251ffa42fc43efe8365b0f048e99b. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZRP52514126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797e425a5d330d70b7eb28470dcb881fdbccbee444583b6a2718366336b4bb80. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZRP52514127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3e0f81154336d42d53315ad6cbbc7997b6406c97f2c7c05b7cbe49a2c29582. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZRP52514128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2812faa9440edd6783d3dfce21a7bb6e3e92a3adafd8c9b58147221e67499fc. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:36:00Z), 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/QZRP52514129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8955c1a54de0e229283fe8952a109259217e4edd689f7861478218965d6f03. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZRP52514130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6040c750e5561c5396dc7650f2c54b6148897197bd643d11af9db756119f41. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/QZRP52514131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406f03103a9490afafbc0115cc204842a1276442b2257b9bbf6b4a27dd8f2172. 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/QZRP52514132.