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 0xdf278e4ac87599f98e5fb8e3279eb4902fafca455c07d6a6b4d09d358e9dab35. 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/5e4a401d-be3a-495b-83f0-2006c0c4767e.json and https://artists.proofprofile.net/proofs/artist/5e4a401d-be3a-495b-83f0-2006c0c4767e.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 0xe22638c18b7eae466ed212287af9cc7bfd4c5e72803da5dbecd8eead9bf9d446. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:21:47Z), 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/TCJPJ1920076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177e3faa6de2932ad673f107e5f51ae9f8f4440b7eed823a85b0f6d9b04426d6. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/TCJPJ1920161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb00431384e9b51c5d2774bc008b02037eabc82bce0514519f4042439db3f5984. 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/TCJPJ1920074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911b84245f815f679a96ffa1148338b53673ec9328accdf76b68206a18fcae72. 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/TCJPJ1920085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9e584c181222b2945846dc9c14e0f3613084591064f99ee5d17dd42b5d4788. 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/TCJPJ1920169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06603eae7fa3f5fe630bfccf8898e615ab359de57d8aae3515fe6058da2d96b9. 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/TCJPJ1932899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdbf50f99fa0b717997f1ce7deab625f53b48a81336f2fb3bab0cc4b9783a05. 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/TCJPK1904417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0539f2e94f272dfd59f5e04fe1e1cbca26425cfc7bc2ef562b7d193e22ed7e17. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPK2064937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5badad384acbb91828bd15f71ff98b8eee89538bb91e2ae213aa487a360cb4c9. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCJPK2064939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7f364466416fe9fc4f652e5d42f3cbd796cd9108537a8d62ca6fda54addf62. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/TCJPK2064944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7d2aa265596a079b66378dd73d0d40aab2e4ed620ebc0025ffa07382826752. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:10:17Z), 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/TCJPK2064948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0539f2e94f272dfd59f5e04fe1e1cbca26425cfc7bc2ef562b7d193e22ed7e17. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/TCJPK2064937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b034d1cec2146c737b46f622438c2b281fa77470e5b21f98c506e07342f918. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/TCJPK2064959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa9e3b86d0cd95c953ba31733d2acd2423168d4dadd8a2af34dd8a32fbd124c. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCJPL2038391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e92f24f4a7ff876327a1b7b5d7d29ab2c0c113b97003cb872f92c238e5bf17. 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/TCJPO2176451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbf76b76465e1d1536b68e67bc663f0a1ae0a4b6853e3af6e39aac5a5a6f240. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QZFYX2249721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23dba21268192994295b53cd38c4a806a501cbb013b20c38b154f212c9c09db. 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/QZFYX2249725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3241202c1d603e8c1f5c716333cb36b483339299994cc8f7d136111cf3600c. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZFYX2249727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5082ab84c74803951d436e8ff2660acb2e3c1c5cc8359ca357f9fc5502a320df. 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/QZTAU2380596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8414218e4649618f4601601f5f9aa96b53dc44f7b0d41e49a8b5bc40451768bb. 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/QZTB72377215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0255bb65f2954281efae83e6a94d2f7caff6cf433341e87a427d7d3aef77a32a. 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/QZTB72382305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c06d691821964d1e16932ca904a05a83847007b5ee9870d5327ec25ff48f3a. 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/QZWFK2340676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b886594bce4bfa4fb589e87664177229091031dfe356b4266a016ea04e3f8d. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCJPD2576223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80131c8fc68f6d1e2a3d484fec22fcdcfc8080434671b84baa14a72635441339. 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/TCJPD2576250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59422febf98cac4af76a8e8f49030b7134bea53dbdc285c30ac3212188fb70ea. 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/TCJPD2576243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339509e828747e261970c1c52d0e3828988d7d04cf03b838b2bcc5784d9e699d. 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/TCJPD2576226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bffac5c18d0fa3083333e146d17246e476ed45898347adf2b1fa91c6daae08. 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/TCJPD2576265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34b98cc488e73ef5b034a23696dac8de6edf092bd1f8ef7fd445f94640dd7c7. 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/TCJPD2576248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d8aa27eb76ccc0a5f745fb229da7189c35dfb661da2abe4ba59a0e27febe0e. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/TCJPD2576253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4109245a2ab567e619bd5cba291868fdf9a5812ee74e1cbc97e706f7bb21195. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:39:01Z), 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/TCJPD2576256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2328f86deaf6f533078bb6f7a0674609c3acf07e6aba60953bf5eff1e6056e83. 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/TCJPD2576263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fed46b98da8b5b7116df9a5b7495e30f41e9c2fa25d9c3a299254f60287764e. 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/TCJPD2576244.