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 0x396bc9ad0cd1f996ba35445f1a0e168febef4c42dbbbfb49112645cffb1cad6f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4409ecff-6c37-4b97-9af3-1941bb504357.json and https://artists.proofprofile.net/proofs/artist/4409ecff-6c37-4b97-9af3-1941bb504357.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 0x52680ca9b0012c1205b6e4cf509ca19a6fae7bfd1d16cda9c054bdff26a7a37b. 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/QZNJV2444189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb07fb178127257a18af706a2edda9ba4b2a0867384cea075e18ff16aac8540b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GBMA22481349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a09b37b5fe42a63476b48f317006c85ef047afe85ce8ba1a987897bc9a6dc0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GBMA22481340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399d0ac72e3b178c3a8e85a1db5e3fdd1d378a901108ecadfc4a010fe020ba47. 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/GBMA22481339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbacc73646d10b0c9b1fab0c8f9dedf0d619c10eb95807ba24febb52041b3b2b. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GBMA22481341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53839e7c494efa75afed89fa8dc1e1246caa2095c0abdc5d8d15648bbbd3525b. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GX53U2377298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbd4456d545a3f78c89aac421a7d2c3561081ec753e7ac7648ba0564867dce6. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/GX53U2377699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76302c589c8ab3a55ab1f2850bcb73548daf0f0031ab70c215fa3c8da1925aa5. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GX53U2377302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87615ca4be21acbd97087771474946327ca4a8f26dc73b64ac7978db3c47ad9f. 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/GX53U2377301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4476fcc9bc919bbffa6ab044ff951c2bd17e9378d45ab79e28007773ed10671f. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GX53U2440296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e9ec84a92a73e81db001e99c8beccf1778d62bf61f8f10566dbbf037a56f17. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX53U2483652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4410fd8e356b5b910ea031ba13941e270cce8205de66c507e1966af84e663f13. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX53U2483633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ab107b029372d9fabff6d3905bab1b10a1c241072c5ad1616b458ae36ebdb66. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GX53U2484362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a93e373e1b1f7199610881ae0ad7ddaacd223daba6ad227c409ac000fe6931. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GX53U2495893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac56fa255704b23fe91f2946fa917323a7962180a5271ad5bb5dff3233fcab2. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GXF9Q2458530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fef51392ebae792c3061931b2eb7c05d9d5c832acf876cf70165cf841ee8f75. 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/GXF9Q2458532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ba0c3cff790a29849346796be61c57f554d491a33eecc1dbd75df9341ef675. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:03:45Z), 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/GXF9Q2458531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfec93ccbfcde11165572a58022b6312b1e97376c57785488091d1f26ef1da3. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GXF9Q2458516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccca543194ad894a49f6842f5c4ca0d1134cba1262bdf1e97c23d2dc646078b. 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/GXF9Q2577680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd3da9f1e47ea5ff33282bfc1e91db84212668731fd69dcb575f844a29ff263. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/GXF9Q2577682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2029fcbd6c6a9789ee9180f05e9cc8a4591ca4767130ff70504c17614b71f1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:06:25Z), 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/GXF9Q2577684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4a4f160925d9b5655ee983f0830fea9a54e0fd3fa2ee369bbcea33811d2803. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/GXF9Q2577687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2724548d049168729da99c0cd6b079846d6a8fced1ca78e145c8bcd6cbab76a. 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/GXF9Q2577688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5765a1163c82914a5bd68f454ed4846a54a1cbd2994e259c6d77f6b577ce8b. 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/GX53U2540199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5423916121f81c3315be674b650e20c3abce6527f8ee724ba8eabddab6744f63. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:05:30Z), 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/GX53U2540200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acf331a945ed5fb1f6b659852dfeec9c4eff60fe7937cda5f7515c43677b662. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:37:26Z), 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/GX53U2540201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe236932f6f9926bcde8a840aa5e51fbe33a375e36178d7b35d19fe12d5c9930. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:26:46Z), 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/GX53U2540202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c87b037f6cfda6a4f0e97a812b90c839a3de33294792a3ba23378879259206f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:29:45Z), 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/GX53U2540203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4353a1e3bc76cc932fbff278d89f84b56fd89cf377ef766ce5f70635a1fca588. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GX53U2540204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473a7401c42412614e38d90dca1d6ae17e3e3a00509826ba0bd444f2ef290b7a. 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/GX53U2540205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483f8463eb9c9be676770a1fdee9c1ea4ce5c272a7c75afbd5659c40a4d231bd. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/GX53U2540206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d82e5d2b341f82e6b64df953e5fc42d556b464c0ab6220b8a64a8bc3a40b643. 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/GX53U2540207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa032d7cc5d7a22fe0642002e645659cf2d586d75c1bc6d495d4e5f9bd9b944eb. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:24:03Z), 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/GX53U2540208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fa3337242888884084ef9b6808db2aef82e682fcd21025c4db017af3ef72d8. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:44:39Z), 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/GX53U2540209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1997cb9d9733cc7d43a879cf406d3fe613bc7dde98c93b00fa20a75820ca687b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GX53U2540210.