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 0x572885ac5bcf29ceed82911e200fc122295091770eaa3eba3250d0b944fa074f. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d8651e29-d9e1-4e68-8652-a35df07fdf91.json and https://artists.proofprofile.net/proofs/artist/d8651e29-d9e1-4e68-8652-a35df07fdf91.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 0xce21cf0bbe8c884746cd6df36a0fd1323caed5c4519c2967a9e510077dce3353. 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/GX8LE2595868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a703f87e5164e3ccbd0897e74eda066059f1be65a26956fbb685cb036d45c2. 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/GX3HH2510973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b63a1484e3e9951c4f0389a2e362fc8a17fdbebfb55de1a6129742865b0e51f. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GX3HH2595139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d94173f4ab451090b5ce5cf59565cc05a5440de5e7130da55131704916625fc. 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/GX3HH2560682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e9d49c2dfb898c567d3da60338e32289cc9a1a14922ba9fec0d8964517ad89. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/GX3HH2514929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18390ece8f3eb6566c35a251559ba39ffdbcdfb48aade3ff101fc52b0fcd762b. 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/GX5MY2536828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57e4d3b06fbec4ae987de61e0c2c4511f410745dff7eda8431e5c8ebbdedc6d9. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX5MY2544539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75efcd654af1624e0eea2280a167e2b7cb75ef1cec9ec41b0ffcd50086a0f764. 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/GX5MY2521420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53069c583d16aa89c026ec8de363c4ecc3c7ee66fde916c3bf3441be545c1f6e. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:43:06Z), 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/GX5MY2584627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76359ad8538e680fb7a0bd5a4326d3d2fdcd66a1696c5c23a59de5b80547f0c0. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GX5MY2585053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88651d55e6ccf83b4a6ff9c094ce3bab14b6c6215c7d7f1867caf2ded5509b66. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX5MY2562421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15accd0662d0c574ec2d7347fbe165302a89de7447a2664293a642607201de97. Chain 2 (Bitcoin): anchored in block 958863 (2026-07-20T13:01:11Z), 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/GX5MY2543453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1ca1b42a0bbe07f51980da9a67f4543103f4eedc87eb13b95df827f94ea28a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GX5MY2507879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab85e5d1bff086459fd117037ce14aa55a6d9cce8c0be3acd736fd0a186f4a1. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX5MY2518460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f1777033acbc4c3b4550f19f208526b8878cb1fa57fe4e603530570e7abee9. 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/GX5MY2524197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7fcf25322d4d38564ec257703bc775ceb1ea439e26005cb84e4c003f837899. 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/GXBDT2524838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e05866bc164ddf8f267e914ae6d239d1f57d0cdf5d3bf2032e33443a201ceac. 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/GXBDT2518417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae4480aab094a398145039f1f11071c3f50efe475fbeb8ff36f870af605bf2d. 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/GXBDT2573902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2cdd1f1268cec36e68137bcbf33706325f09cd722d82cd5376cd6b8bf259c6. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GXBDT2520515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2265a3b1f0706c13244f269159175256cd8cda65fc846be85d473f877c738b6c. 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/GXBDT2513182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa59ae5b4e5848948d75c3064c6cad8fdbc911c153742a25afd9f28fa0349d3ce. 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/GXBDT2523161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf457c45b1be3ad62ce6dda522a4896cdc6618d636b866ccd03d7f68c78464b66. 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/GXBDT2556809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a433cf3bbc1e7956ddd52d9724f9da3d55b7c53880c6a6c1c43fb81ccec8010. 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/GXBDT2538621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14c395787d477615ad95154f5dbf3d68fa6131c059eed57d1714480a67231d6a. 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/GXBDT2594279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3c59559b0ef5a934c97f7ac894fff5b0c43cd1985409b6bef9f77c2a45d8dc. 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/GXBDT2589908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb640aff61c29b53a20b13c860e8bb27660d8730f00a9e0556b93ca8abde44b31. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXBDT2545722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3f8d5ec9bf8b7032e7341c1b73d3b7f4a30d10bc56aa2c4184257833d35950. 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/GXBDT2541322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b6dfef617753c4f02f70d0182bcf0da9ce07ba7ae0aaf5d39e8b11eeed34b0d. 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/GXBDT2517762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85361329a0cb61c8c633f67ad2204c0c69782185efd0079d19b114a7c6f97473. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GXBDT2511817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x895fc583857e1c11dae3b4827509902b6e4f8d1b05e266f41db4480ecddac380. 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/GXBDT2541392.