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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6813fac4ad3c914c9b668b248c0da1a141d966fcc95b5a113d2998a25726c85. 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/0e9d7e88-fae6-4f90-8131-3637398582c9.json and https://artists.proofprofile.net/proofs/artist/0e9d7e88-fae6-4f90-8131-3637398582c9.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd211b7f23b2295a80838bad08b620aa41a5201dce7f41ece4d525833fb7b03. 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/GBKQU1860513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bcc400f8cbc60f3dd887609e13ecd3596d20c5beb8b8d03afee902aba208a2. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/UKACT2162923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc847d92ed4f471da28fda1dbad4bcf3ae7109696ce27ebd5c8113c4511e47cf5. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/CA5KR0023016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79eff300344442b7a81017503a7941f7ea1be3f62631c9953e98df6a336b4b43. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/UKACT2280009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253503fb917997222451afb3c3588f97a0709c53a2366bb55d6b97a52673223e. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/CA5KR0041516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06138a50a36819a00fe2cd021855c8d28946e607ef013b4f260d93a93add2381. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/UKR6V2280878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63fbb986ecbb443d14c9621563fb7036be7462ee405be25e21f93dc38e0a993. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T16:28:12Z), 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/UKACT2281029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba13941baa19a3d9700662de0c501c7825a40b3033d2aca35128dee4e3b97c13. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/UKACT2281461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e68788875fc759a5008577bc1c80f00bdfb3288e3ef5aa2fb1acb845a123d8e. 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/UKACT2381355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152a525317842ca9861174e8854c6338fff3eccc4e40bb228bc6de675cd99880. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/UKACT2381802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dacb5fc96142e9d78148ed05bda698650db6bd37e99a23fbe23e34748e1211a. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/RUA1D2374032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cda7dd1b7b2563779056c1d89c89943e3a21d67809f908b8cd5fdb666cfc15. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/UKU932320845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c5463291d2cfaeccb3546d0b840575cd888cbd665ca47ef840c9001426c682. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/RUAGT2347601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304d9f20dd1b78742847a84119ff8791a20004adb4fa131c5d3d8d4bd4c9e7e9. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/RUA1D2418397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2541874bb1fc4123e31a8884fb6bdc5c2c535cacf1876d2b03c94d8401268f. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/GX89G2483479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4ab4fd75c4eb88f75d130aa5595ba45d1c8d847250d27ac8ae9cf5e9f01cdc. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/UKU932424178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53952af0a7fdc9d278d2ce4dcb25fcaf7382354ac39de8a3c5d4e1779aba0cb9. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/UKU932424888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8f1ffe95cf60e0e81307106a980a6b49d72017cc93cb39a0769a8d4b207d49. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/RUA1D2483711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebb7143836b10e3d19bc1b5514d2db1019a99c0664146bffae4b52c1ef9ca7a. 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/RUAGT2409848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d3c5ee9ce71776f88260fb4a1cad918268add4d13295f0d7c853a9ef37b044. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/UKU932425270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54ec334971c880f103cca2fdecbc680cae004e1be2c8067488eac26008f8789. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/UKU932425271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d8870c6348ed201dc0ba0503f15cc23de35bf948e529f2dee463eb428e4ff4. 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/RUAGV2410132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe749ec0d9cf3d92426a068b6b3d828e98a5896ebc585601862df2e38a8ef31b2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/AEA2Z2505669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a490bdc55331aedcfa97f958261d32d7a0a61d080d098c2056c76a60c59ecd5. 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/UKU932428792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab0db857cfd2c2ca6f1bfbdca4c5cd0157937d2a5022caa1ee3a028ed531895. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/RUA1D2503543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04466af24eec73053f9d59599c4c9fbd33beecbcb51b9a49fdb8d59dd8bf96b3. 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/RUA1D2503502.
In and out of Funk (Speed Up + Pitch Up)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6532d9c4b4210e2f5bf6773d47d3b155e24eeb61adc23b0da8651766caf9ada0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/RUA1D2516292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f589ffaf105fe2331dd50f4648e6617d80b4c667926cc884a00b457a705010b. 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/UKU932520342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a5358b576034c86f275694749d8c536b24b0464086323a49cf61b8fcdb37093. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/AEA2Z2522011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5356d1a2ab92135b5ae0baa58eea2130697a2be6aac65140dbb42e59c89dd090. 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/AEA2Z2525187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0595cbdbfb3c4a7647cd3101c67605976b8b3cb5a2729e97771938c7b19cee. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/CZA232500632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x591e30841674df4d1a1d30f49eea1f768efb121d18b9bc4d511c754394e5eb84. 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/RUAGT2520115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a72b0e3210b97564b1fb53ed801da14e7c5c25b150996e535e1355b13dab34. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/CZA232501003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef6ec7ba70fd74e0e8ea33882433abc196dbb60edf31fad5c1fa9b2e5e7f146. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GXBNP2553400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdce92250ecdb0c15dec86755656aa02d36af34d758231cbbf06434a32f47c2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GXBNP2552630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3683384eba3ae98d4dc8701471976a09200d67af7ca0a5df8f0d9f77af409f3. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/CZA232501205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251ac14aece496233cd23c1e687f00006210399ea5c321e59d7eac4487606860. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GXBNP2554242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba4f481173cc3848a4c453203b853e04ab99677fb37e6c08d5a4bc7695cfe72. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GXBNP2552672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d36ebcc1c302b9e28722b6e496daebbc91546d35d28fba86240465a8d57dba. 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/GXBNP2556471.