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 0x10db135b6ab410127a693e91508aa6f2e27b1c02f670d57a1e568cd1d47c8aa9. Chain 2 (Bitcoin): anchored in block 954174 (2026-06-18T03:01:36Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a5e13b0-54bb-4951-971e-1d3f20e3db34.json and https://artists.proofprofile.net/proofs/artist/7a5e13b0-54bb-4951-971e-1d3f20e3db34.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 0xc27500dd3364ba856941e5cecd4fbcde8cc29dfcb4ad8830b4879f852ce96ad1. 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/TCAJR2529848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30064006b7f582d8663506220328a0d2b18186df47e088229a9dbd25a76fc4f. 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/TCAJR2529855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeac49531f38e761b5007873d93f2597ea02f1a04378311e64677b9bcd3f6dc0. 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/TCAJR2529861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e71d9eb429c5929d0ea7fbf87d6ef90ef7eb27699088c66892cc0e5f2e673fa. 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/TCAJR2529866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013973e76dd4ef5b36e6b2746bf98b4952497bc81e0bde6a17f183d992d7ea03. 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/TCAJR2529878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6188d494b9d10dde52aae56f6be7a954b04c8c0c2131fdff8e365e160cb54b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/TCAJR2529881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ca2982fab0c31e8760fbb4573bfe93ecc553c9ddd36a043172360ec264da7e. 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/TCAJR2529892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651b57abe06c76b202edbd0ee9ab14f8e621f0708aa213610c7fae7aaad4eede. 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/TCAJS2529897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f89279f9863e9769c6fbf542792b0c6e77a5d02d19b4bf33ed8ca537f5f312a. 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/TCAJR2529901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cd68e654b2626a70665a3d56db4158d00267fd1e3a48bcb49f7369db47b9f1. 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/TCAJR2529904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb93a401cbce07fb9b81056ca3d483340b79a47478e23dce237c5f322617c139. 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/TCAJR2529908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39611b449ac248b7bf8569c456b3c4e87b5330ab9a271dda8a40ea95a8dec26. 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/TCAJR2529911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68097147064086c7e4e26511fe5cd903461a19709c0150fad11a434d363dec1b. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:34:59Z), 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/TCAJR2529917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9815d2bcf467bb15183d8c914f51bd9e3cb77c0b7ccf76a7816539c6b75c5545. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAJR2529398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1016d9d091f7892a489af5100432f6cf3151961b0631366dc5e904ab632b94. 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/TCAJR2529540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47defb0fafe412a5252e95fa1c38a15b1d61363c7557e9c3b79d733d27d26ab2. 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/TCAJS2529558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905c15b272617f9171abd1ca6f148a04dce3ef73c9066b318c9ae367d78c99b0. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/TCAJR2529566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdc231e59b008e444a31bfa62aab0e38b75db9b56461ab93151eaccfc1ad4c8. 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/TCAJS2529583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5fa23898a245f62c071c09f18fdf94148da46aad8ca6917b98c567a9626824. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TCAJR2529593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7bdc037241ee007a4be6ce697da62a30a720910b0dda1eaf8e2ab69086de6b. 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/TCAJT2529597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dbfa1ce30c3e7316a626090895911c6951fa2daf02425c011c211532489d791. 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/TCAJS2529603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b22adb77f35abe2d3ccdccf8d3749701b2c67c0fefe551e03824043ead02d1b. 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/TCAJR2529624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf709a31715e2784840f0cc182236c19178d6948b7f1875ac608c52211489f963. 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/TCAJR2529631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4800e2b69130808b3a1a397b0476b33d087187914d3e9ab5c6a4fe0d767de5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAJS2529640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449f57ee1ac735ffba69bdc9d31a789f64e7fb428618bcd1cc40f2c5ade01058. 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/TCAJR2529647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab4eb4cf2f22fea7fd4b70002dbfce78d0a17feaf87137258c52c7fa885c878. 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/TCAJR2529657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x226ff6f51df4a99f11bfddb339cafe907d6e169179f48afceb3baa6a7c5795fc. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCAJR2529661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc312d6876d12fd6d5e9fca349eb6f9f556e708d666eac0f37499523c3c51a95. 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/TCAJR2529667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66861e54a0539e18e2dff233d28a203ed3ac43804e914d474fcfbc00f6ff7187. 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/TCAJR2529713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef00d5831a11d69ad99aecc7d25c50aa943002cd8cedefe399379d1df29c7d3. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TCAJS2529719.