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 0xc8e07bda605564940bcde14d071e27c1750503c209aba9bd8da3ff31e06de053. 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/9e948030-8b2b-475d-baa1-c24bad925b36.json and https://artists.proofprofile.net/proofs/artist/9e948030-8b2b-475d-baa1-c24bad925b36.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 0xded385cde3db6e32ee1e9d558d1c844d2df9921cf19afc867b898724c1d21a87. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QM6N22233915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e551821d7bb41c6bed5c54267824a04e0c07408844015537c48a4927d7a274. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:24:46Z), 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/QM6N22249746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f19edfa80584e9b82460f9ca8ffbf20fd37e92d1985b12ad5fc9fe1010f3500. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/QM6N22294328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c4d4ff815e687b3612d7f36ac0777ff1b8dffee1d8919825866079bc3196ca. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMBZ92298979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634e4cfa6a72517c95ceba70f87bf32b9896c2f918fd39a1c3b03da4fc5e35a8. 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/GX89G2377472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07d06fdd2ee00be68ed2eb2da74ed0a5c9105831678f9c2707c82dbcbcfdd00. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GX89G2331476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf97a25692da2c061847cc7f2e08d0feaf7d397f50ba3c22ab0a5228bd321555. 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/GX89G2392982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64743369038ca4430573bc40146baf5077f99ca48459be8af19856d3ea026abc. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GX8KD2354467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a6ba60d7343f5d2f74b856188e883b565f0be76d2842bbd4c7adbb88f328d9. 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/GX8KD2349229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4b162d18041ed7ee27bc2e2c0d47db50ad4957f9d6f8ed551e8390d05e89d2. 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/GX8KD2338967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821fee63b80aba895863c570ab60208c7513938f75006ddd14f0a45d9824b1eb. 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/GX8KD2303876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd090065c8f64e4a176fc2deb9f1619d5a8517118102a13f5183131bc7ef18f02. 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/GX8KD2351856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4518ff47299f04b045cc39e05054117486aaedeba4b0dd28072f0ed7f787eaf6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:01:58Z), 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/GX8KD2321444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1767384739253430ebd77edfb3ee9b62b104073bce14c876c75856189d2367. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZVEM2318398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ada46f9485fde6db370154f60f1eaeb50e3fb48e904d6a69f209d1427c84276. 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/QZVEM2318399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5fda9cc7e7e58d7a119a64bb7e414e92d23e73678649300071d94101d70fca. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZVEM2318400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af10f36e0dc2f3875eabbfca7d9fb158d0865a926cef5f908e5ba6c13056e18. 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/DGA052396780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa97608b9dfe3756e3e154621ed4a635d72a4d35ddd19f8bc8512d93fcbc61ef. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DGA052396793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f59743ead27816b00e71676dc676770691ec08001c1855acd6b88da18f876a. 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/DGA052396797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c72d8363649548b7a569bbf45421f2525a227345efca49b091cbfcf0dd40e5. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:04:44Z), 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/USANG2462563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c21592020e342d8fbbe4819a1507303d6184f936d4c2b5c845ac354f0205ca. 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/USANG2462576.