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 0x171ced9471e6011f64179f9c5c899a6a76358c78008d24fdd9093af36f910dac. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c3ef6fa6-2fd9-4ecb-af4a-390079187c29.json and https://artists.proofprofile.net/proofs/artist/c3ef6fa6-2fd9-4ecb-af4a-390079187c29.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 0xd509d54a08c7163f36a165d28a8778623dc27629cfbdd525255b3f9c098c7073. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZTB72271474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6e1ad8c54cbf5d5b424c25c35681cf56ac901b3dde1b0eaea53d778034a4c5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWS2310144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5e383fee19ae4724937c5258eff52f0b4552391c82b2b3387ecb34d8ba80d3. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZNWS2310145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e4dd462a72dab24ae2f5488d49db3d5fbd8408005198b6b64a7ba3b40e0008. 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/QZNWS2310146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3decb93761ccfc42356efcea534fe60a7fc93d6b9ef30aa77656c3cebc8b805e. 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/QZHN92417055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe435785e4f37a68358b882b8d54d99d403cc79e0fa652777e42cabc8f8ceb463. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/USLD91758040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3fd0bbb7c61475f245fb512a5ddd670ecda899871164cfaa4a7791f40beda3. 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/USLD91759366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ddf8a7a2788c0a41eec38f4fb7f11b5cd3a7116ca24e0cf2fb81815725128ea. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/USLD91759466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd159a08f6e4aa8580065983d6a433bb23c101c5a6096ddd836321e766aea505f. 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/USLD91759469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506eac34b577050d49ce3a5507eec464518fe519f10e756f4eca92e68c96b9d3. 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/USLD91759472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f86fdbd5454a27629f3d733b667d70dfa9d3f03046567e110b9f964543800b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USLD91759473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618d628e45d9e2f03f3b00d0b60e81bdf965fd22492a86c76fcd37b40077b59a. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USLD91759474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf236c14e19fe0374a14091d5904f04bc12aae23bff8ff446e99088ed543df53. 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/USLD91759475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6670ea4c156758144f02e77cc501ab63618bcd2af840595c5d84450b33a04fb. 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/USLD91759476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf1f0a89271284d84d87f2ac4e91631cf004e239a912c7a5ce36dbcb8101910. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USLD91760888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c740d04038cc396b774b22d361775978e34c168f0b92c2f0390028a10d34428. 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/USLD91762030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c5c20ac4ca3e2cd80e626760f4b0ad94667d8673440e461bc88fd611eb7506. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USLD91762554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c740d04038cc396b774b22d361775978e34c168f0b92c2f0390028a10d34428. 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/USLD91762030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a903facee8ff93971286aafb389b400c91342473cdb41329a3057a082dd5c9. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USLD91762556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57017f1c56a332af0624c30c6fc94081314f8d622bb843680893a80bea3eb7c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USLD91762557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1a01dd4e4fe3a1931e488ae212f7814651a93232e2fbcea5fdd504910ac1ce. 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/USLD91762560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10a17fa5749bf0c3402f1df0d65a4769155b419bd9a3a60d381e3e96f085f8e. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:59:10Z), 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/USLD91762561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a048a2ff27390c006491966bb039a0f6437497749555e821f94122d90bf17e. 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/USLD91767322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a2be4a3574c69b11dd2bfa1505f85d75c68f742efcc6c93924441885eb8de5. 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/USLD91767323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0059b3a317a5787d74a940b243362489d63473b15ad0608ded5b471bf354f61b. 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/USLD91767324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf27f9abe24f36d8f43de0bdd8dc323fe2fabfcbac94e55cf86791206c5f8a0. 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/USLD91767325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59caea9757024362deb99da07dde59bf441db555e093cd1632d765012f9a4252. 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/USLD91767326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608007e30c3669d606a78c422de33fe9bfd7d9c269a7d3b95b1fc48d4b63c293. 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/USLD91767327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38eb9a59fa63850f764b7b5f1724b69627739faac783ef717cfe7a2c9b5bf75. 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/USLD91767328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcfb75a9ec0bd08a12a49058ca78048361ebaea5754d642dca28bf1bf04f21d3. 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/USLD91767329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca5840dfb64d102ea9246c6632cb3fa83600650fb8f1b8ea3e967b3158065cf. 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/USLD91767330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8d3f9ebda8ceb58834dda749be04e81eaacd2e4da299cf9e1ec11ce8ba099f. 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/USLD91767331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55b245693e0fa8f49df25ca2446c2b9649a4d725d69702eaf71951eb4b1cf6f. 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/USLD91767332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0080f1a1d850e363a4121181b2837603ddbb9787142a413933451d48d0381b15. 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/USLD91767333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1164518279149a16b778823a414413a8c092982b12836abeb611b36ac45d79. 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/USLD91767334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d98f1c6493ffa3655ca5ea414385ad8ec602cb4cdce6e5113b952e022d11eb6. 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/USLD91767335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8337b7a8b1f67109aa214346c85612cd158f2f18a53168eeecdec94bf5a5bd6. 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/USLD91767336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb09ae5e844be7f9a77ad3f660681452adfcef202f15cbcd19709eb631137a68. 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/USLD91767337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397f2260341bd883b6be3fff4c7dcfe4c0ed77b2accc85eddf14ebc4a0edb41a. 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/USLD91767338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efc52a4ecdd702007fc7b58ce171ada970c07cb4234e402c189ae9c93d5f144. 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/QZDA72572626.