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 0x3808273ded190647585d84a68e13f436db9d16c6e99b7e18aea34ed7da717c66. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/891108d6-033e-4ab5-af8a-6ff44694d617.json and https://artists.proofprofile.net/proofs/artist/891108d6-033e-4ab5-af8a-6ff44694d617.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 0xd2c4623f0b03be4dd45a8692cc56c264d60a14b185935705f93b73dc3c30c956. 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/QZTB42313510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523d26d0e6e230604812162b900f07e654c177c48feec0efea4aea9c41a06f7e. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:53:21Z), 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/QZTB42313509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec57a6a869f8d762db618560bd98e39c3b3236f8cc76f41ce8135ebc2d8ad209. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZTB42313508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c1dc8b731e3d1eae9dbed2cefaeb727277b9ac6115ed814e86a82ef4e4c860. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:29:30Z), 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/QZTB42313507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd54a1573ce2f27095b935746049edadda288683723da864f547890508a28155f. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZTB42313506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b439856df28fb4d4f7f76bc2863f4a176924c70ae341ffa310eb2efa94aaf1f. 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/QZTB42313505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x086c7507f4fe7a5ee87b339da091cd193e4557a0fea9f7f95a0e29f3713bc77d. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZTB42313504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a8d0d3d6ea6b6b2fe360f28710342819b1ffe66bc7e792705d5446cea2f7f0. 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/QZTB42313503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c36419fc547e8c77f050c7e7eb9567fc8332224d661d2ce52ee0c4a6cec61b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:47:06Z), 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/QZTB42311289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fbd61609cd4b8aafb33912f249f3dc35bea3047d0f0163ab5aa0be59ef172f. 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/QZTB42311291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b6e643eeef834a614ecddc013964d8311bcd43108de0656e8ccc6dc0673f06. 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/QZTB42311293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c83b54ad0a8828747f665ab1b52193866eeb7f339afe756dcfe197bf95e0ca. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:07:24Z), 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/QZTB42311295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b125a601b7dd94d1e7091a2866e40428f6155d2eeb01a62ad05e63fedbcc71. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:30:44Z), 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/QZTB42311298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c93079835901b14e7357d63747bd59d518a1a10ab9f86c14d34bca6ccfdf90d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZTB42311296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2281806c62fa1b517ff5afb388e3d697d7917bc8ef5d17c2ad9cfca0957ef2a. 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/QZTB42311294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc989bfb549f5d23f0a4b321a083115634d6c02e12c89bbaacfa42c32bba51f4. 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/QZTB42311292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8525f302cf9a463e55fb3d987a44b62345386e2f4b81e3dad1b64f0655a55144. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:04:42Z), 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/QZTB42311290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf05f26b98ca8ae55187ec68e4d6206d5af52108669b0f52e51a64e67053b5ed. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZTB42320753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245fbf9fc88ff7a7cff73776fcc1f16760f37a230086b794f78c1d8bdb9d65c6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:51:08Z), 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/QZTB42320754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0babc297aabed4f4ff1658c18ce978f47b54b8d0e986946caa7160b5eb849cbe. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:43:53Z), 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/QZTB42320755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe93a859e8b9aa99447ecc800a40de3777ef21683544d5c3a26d13ab43f8807. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZTB42320756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c46c52c7445fc791f3c16b086ff5c47f9227626a94658a1875187f9fc5d2559. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:56:44Z), 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/QZTB42320757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a208341920cf13493712940884737c6a5d238b79096a0470b358308610d8098. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZTB42320758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae295721b683d70379351e1b9d4607f88809da659a71b7fc93c087fdecd97d9d. 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/QZTB42320759.