1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6d2744cab35fbc4edf9c8983bcf5ec28878a8af369d36ca196043e92f0b5395e. 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/bc2d1317-b742-41f3-8208-9f8af8ac999c.json and https://artists.proofprofile.net/proofs/artist/bc2d1317-b742-41f3-8208-9f8af8ac999c.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 → block OTSBitcoinBlock must exist at that height 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 0x96dd967595fd7dded9c2a515d62e07dcaa2b6108c5fe853a36a544a08699e56b. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QMKFN1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c1c8f0ae9ad1ac8635cae89478250b4865f8df6618369a989fe45b48589b84. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USBQU1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7059fd92f9fffc189a661e08bd4387c1a8690fc14967ff6d2017f1ad070a3131. 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/USBQU1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d9f857dfac49b20c75fdf1730f4c699684e88b4abbbff77955e832823c96f4. 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/USBQU1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4448596a1be72e6d8d6276648def5926786678437e6f483f67062d2171c6a0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USBQU1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5cd89b2937e9d2a334d2b6d75d47720bc509d0fc3d25c3fa788cf006ed94bb6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USBQU1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf4546ad70d1a3e701cc9b9d33568d5158e1340a68eb747e3cdda05651bd76f2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBAFL1700162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4adb6c68e797e3f0df7db0483d6174613cec2fa961e0633f2580d0d7a6b71d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USMRG2070703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0e2cac13f1655e76cb1b84289435b61618feadc4eb56ff5fedc610f1f9d179. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USMRG2070706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68d6d6390cb701346b04358139ed6f3bf222f183c42479a37e7b1e7f01b7d72. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/USMRG2070708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767e42f723a57aa8029b14d4a89e30e489f6fa7603cbefbcc5904c186edd6b31. 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/USCGJ2081203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87da22a41ee05e05db3fdafa7845f87d555e6693575cb173ccc9d23776f27098. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USMRG2175707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529055c2d90b2f2a049f25486fd7b207dd2d3f934dbc8e894b10174e5d38b7c9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USMRG2175701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c57f4761a59d9dd1dfbe2787e01431c4db011ad5561e01414ccb33b4f6abf64. 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/USMRG2175703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46baca83dd147f2184cf5a852d2061a004565e0ed49b3eb8744713ed651fe06. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/USMRG2175705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cb8d856af5db0b3c8b0d1abbf1e073fb9c500d648ddad3cf9d2231a8395395. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/USMRG2175708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c95b4ae67a53b0d283f8feb26e53c51ef343d5dc8ddfd7546b6b3c1071dc8d. 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/USMRG2175709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1cca4b212f0a2a47835f8f52e0efefc65243163c146aa49a511d79248142eb. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USMRG2175710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2148a5897668cff8fed6178e4d9914b0f034efd164a6ab2a39a5f30494ea68. 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/USMRG2178701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c3cee600ddf3f55089b07815cb49576ef4337bcae5e2eea9215839c8ea7295. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:15:43Z), 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/USMRG2482702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6011eee2be8bca460b242d43f0c5674987e65b53a50652b9469bd64489aff81c. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/USMRG2482705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa1ab2698292b372cb4d5bfc3c616cf6ebfe3f4c26900d30699140968e0bb6a. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-17T00:13:10Z), 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/USMRG2482707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49c09eb060ae91511fe14b9990e535b1c88e3cac9ea4ae426c0204e8ae59a3e7. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/USMRG2482708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72a639112e98d6704e27f6e0e3114a4449dfa2b70ec17cf56bed80c71b376a47. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USMRG2482709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4a64756f8b9144679ddb3777864b408f49742f0bad6a8cff8851f980665c36. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/USMRG2485202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa654cdffa1bc3428f5efae9c17145ce197f888249dce53d27626f949185012df. 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/USMRG2485203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d90b0bf85d0599aa5249c95809d32c8dba8a8818d802cf47a3a65837b879a4. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USMRG2485206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cf7a56b48669fe0842ef00fb6ad58c55147e74689fe51d865717a09bd0b958. 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/QM6N21838293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52692d8d7ddabe8b194eb951a11b00aa63d341323958367dc2636376fa13113. 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/USMTD2400408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314d05c95ce0a349610a616fd0bfaac3cdb90dd1738fef7f0c563f087d97d70d. 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/USMTD2400405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cfc579394fbadc99be8fdf943071e9fbaef03426a453a57e08632fc197c661. 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/USMTD2400413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a4f40a4656a281008ea75c2c21ad50aa9b2ed0497f3e649bbceb40494dbdd5. 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/USMTD2400415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ae8853c6800374c09d30baf4d726e8e3cca8d4cf5975b13e4a82b5f26af18b. 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/USMTD2400407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00cfc579394fbadc99be8fdf943071e9fbaef03426a453a57e08632fc197c661. 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/USMTD2400413.