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 0x8ddb0aaa13d1374729a44ea6dbfab22420f8cb8f27414b034d144d8e2cc339ca. 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/e8aaa5f5-d61c-41f0-af2a-29e57cecb6c6.json and https://artists.proofprofile.net/proofs/artist/e8aaa5f5-d61c-41f0-af2a-29e57cecb6c6.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 0xaadf3f937dcbf110187efd9f7abb7f4979a94d8841c761fff6077ec0c078843f. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/USHM81703011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd72af55fe1820bb936cb518e3dcaae40e5a51e47111ab767500cab61dcc529. 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/USHM81703015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19b0d06b34cecfa20111d36964343ee96dbda212470cd57d450da9aa940f592. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USDHM1915861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x160e7b36787752351301e4bd4eaa1c9f6f8b9e2ec4e3215c5075378fa7eb98ce. 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/USDHM1915862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe465f905ab3d440a4a7d65ec0c32115bfe9a92362d4ce6e80b65a3b06b633c9. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/ESA012058142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2645506492ceade3919afab923f7a3f18b8d8050ad9cdff595201c6a28bbd4a1. 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/ESA012058148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dcc3c4cc80941cace2adcfb640ca0afd4af6eea00709a82bfbb46964af82bc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZMEP2183489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc61ccb28e5ba09c6d734955d058667d8e66c7f8c842159d57e38db9eb9f7e183. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZMEP2183490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3306e8199526ef474b9c0c03dd93a0fbb18b78560b2782d7ae7d3a7d9c659827. 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/ESA012054721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3beae875b99edaf19b3b14958bf1a846912caa5cd5ceed8e04bee8f8c84a0dc. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:28:29Z), 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/QZRP52171230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8105511a7b881e4512a2dd2e86caf4443fd9dd80b2cb51744f195d6ad249831d. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QZRP52171231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8e8f8ed5bb38b9ae1f6534cb8f5f53443008895a9825e724a224d45917dcea. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:26:06Z), 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/QZRP52171232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6159e23c6d0cb044de395501df78bb0f938299d855cd67df32472890649775. 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/QZDA62269008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6534a990157f17bbd11b4e5f00d48574e11342e53c4f5b1236d611ccea67a8b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES72263615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x403431bf33e885fc8eac17c68d6fe99bab88c4d9dc51771f2a3158e9d2ee2ee8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES72263616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfe2b6977dd9313eef639103646ba34e5cae2c14d75ee3ee680d23aa5d1ca5e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZES72263617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201552b01f5576eb936bf6f902e5f0b53628edff41f532290945d091360c5f61. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZES72263618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5af153f3da7f1db48e1a220bf22044a27ae0422470bc006f9804aac9ec5d00. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES72263619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c26e7c65ac91adfe80ad6ef2553ea52406400c12d1fd739ee2f212735767af5. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZES72263620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa294d1cad7d600c88136d95081a9ceaf373351c2ee11d927234cf4d181b9d71f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES72263621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b806eed6e92d87d7db20b085bf10cf4fddfbcacd79839f94d05dd29ebe21639. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZES72263622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee3c1ce34ba796573c93d0235d3fc6f31bea507520ff2e5131852c63572ac9f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES72263623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d0d1247aaae2ffc8b16f17dffe2f90e0085b5a2407ad69f6ae607f3ecd68f9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZES72263624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5b864c548f09696b22d6702e7071e8dbf1f447f04d69dfc4a7f443c162008a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES72263625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde027ee40a31469b53cfe1b99be33dc16426eb064bde57d85a026b60488d3b5. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZES72263626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a9d753678104a2d1278331956eaf9c9366d23babe530dd67b1b048b52da095. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES72263627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc7f3f66b28afbf8855336a11dba5f6d605fd3093d5275e671e0b7834676aac. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZES72263628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79195946f64f03af1f4299b32f5eb3c41e087d9a582786767808aabf0b34598. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZHNC2328515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57b16d680559b50a001c64ed3e592e2e9a6fb8c6b60a02eb4dac39f448dec2f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHNC2323210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd3f8cdb7cad1bfd950d39e3a2eb76d2b9591ec78db7599d936ad1c771d27dc. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:30:10Z), 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/MX2832411021.