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 0xe0381bfff2a417e1f90d9cf5160e27bf66f98c783604ce8001d93a998574d011. 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/f5d02197-dec9-4b72-9b67-6b73562b45bc.json and https://artists.proofprofile.net/proofs/artist/f5d02197-dec9-4b72-9b67-6b73562b45bc.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 0xd4a30892a33a1e561342d1dd2019919d606fc487a02df051ed8d707b9d8530cf. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:55:21Z), 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/US3DF2447433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea894c2de768943ad13409303764e10158a691ac553bc6881a73bf31d796ec3. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/US3DF2447434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552e8936ba4fd713d497edd7f853f452dbf97cce0ba166362f0f6fdb9bafa57d. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/US3DF2447435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7e1b120f98fdec23474fcee2036bb69bbc241d30567ec8f5b0e117d022c1098. 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/US3DF2447436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025c6e07df3eeef951a5c66a72e9ee354280b6bc997ec06ef2d169a37a3b8a4e. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:15:19Z), 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/US3DF2447437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe141974237702f6f8898cdf57c7fdccadc79ac28acc42264fefdccc4f40cd3cf. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/US3DF2447438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0d2a473de4d546c8a54badc80e2a688f5384c6688e47e61358b24c31654d6a. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:10:29Z), 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/US3DF2482748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52835bcb8dbb826a2ad18c6b2df67220a709c221c835e5b84682b7cf5c33800d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/US3DF2482752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f84935e2e29eddc1d398ed8015518d35a67f535f1a300e89ee35e1ed345ac99. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:32:11Z), 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/US3DF2482755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83641fe8e58b6805dd266483c0e4d6c95141eed59a9119a722a05e689241ad1d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/US3DF2482757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9ba35af5bd93279eebef1901c78c977a71ed9ca1b4b3d2403c53a6d9d68555. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/US3DF2482764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b386d0588fc14e716f9265e96af404cbd16bd53bf71fd477baff0f5e499d76d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:04:38Z), 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/US3DF2482767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb108de1875c51b8f309d1c0d2af3c225c0a8e6712cc240463287fd3fb3012f2f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:12:07Z), 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/US3DF2482770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c43c9a4047ea843b36e0ab1cc94ad71a66f1555b966405546f71610612f8973. Chain 2 (Bitcoin): anchored in block 957536 (2026-07-11T07:16:23Z), 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/US3DF2482771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde88101865644846710b34dee67fd6e4021fdaa130ec5299d9bdb7ecaba7733. 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/USANG2463638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04de4abd4fee07229c982f8f28c530eca8741521eb2821b58c4df6776200bc3. 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/USANG2463639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd692eb8c95b1ba20873dedce603892193298aa999a6b571db79e50e78add3c7a. 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/USANG2463640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcfa4edd6809bc964ce9877322062fcd427fbc65f9f7fcbd8dea1e38fcdab87. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USANG2463641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f9f9a48e594cc28cb0404c0faf37550bac75ba71fd112d4b377c78b09b9f649. 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/USANG2463642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c153ffb8ad7324a11f6d18ceeb72c2be346dc1af4aa9a532a5058bc1b6a9a46. 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/USANG2463643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938915aaddbfd672bcefbee5782148fd5020a542895d3f2a4cdcc89e268d7d00. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:07:17Z), 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/USANG2463644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d081130e3c1cd3c956c7c7d7bae12c9792f78390b0c42411ce760440855bcc7. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:53:36Z), 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/USANG2473539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db3553e652bded5a45389768ccc35e11ee880c46eaae8e260f23107cf741693. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USANG2498024.
the beard, the coat, the boots, the belt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5281cf4ddc3d91015a5ff796be080a44d55e845b8174b82f6ca979e1d624f7ee. 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/USANG2498026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42728300a7fa9c9456aecbcf1375482da6e25d14569a53c1328e586b66c674e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USANG2498028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b468d2fe55b915cef75a1d73c07102e9323415d940f0b49daf73cff3be79066. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:12:30Z), 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/US3DF2554240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce31aa7a7bafd14aee409bc6e274b7e01e568acf48b020ea1180d182dc234d0d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US3DF2554241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ea26ca4585d1cc2408fa2cc4ab93463c80ac23bc648f56c2450c6c10abbac7. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US3DF2554242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b6f71373a6deed545cbf5d4774577cea5da91b0cd6b0bb472ba0707324a4b4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/US3DF2554243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd990e915a171702e1784f1333eed1e3c2568ac05925af47159a9768ccf08fb8. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:56:21Z), 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/US3DF2554244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d24d9718010a9ad3d12232c8128ea2badc3cf17bf1cb1491e8b6e59a5340ef. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/US3DF2554247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf45d92dd90cdb278d374df7986d103741ee071568ee33d205d0e5b29d86a92b. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/US3DF2554248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30cca4fa0b0094833de067eb5ac26024741127831bf58eac293dbf986a15b4c7. 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/US3DF2554249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6898adf3696f3760f5d3a8c13e00d92908f477741f2e44cc863991860a394c24. 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/US3DF2554250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e898c88fb36ecda408897afd78e6c669c428ea73e756c5b5625f2b74d5ed5f. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/US3DF2554251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe589d9d103ce452d99b7012c5d894b23425cd15d50f20fb976fc1177bb935caf. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:55:30Z), 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/US3DF2554253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5ae4933db5be0d584574efd520834b9af0e9889e63a58e96acc36bb1275a83. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:23:26Z), 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/US3DF2554254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d9daa69fc202f64001ba859f4a703db0b842cdc651a80ccbddf50d1baa24b32. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:06Z), 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/US3DF2554257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df2e4ad5513981287f0e71280d0b845abdad4588768434c0a250ee03246ed63. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/US3DF2554258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1781da20497a370ca010118abb5f332da0264af3dd4e6462bde6a8c45266be. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:26:20Z), 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/US3DF2554259.