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 0xa0065d793899c8b24cc89953aec25d14e5c7f4b8bccc8be7623f86c10b70e901. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2b315d5-8a99-4c5f-ac0b-b927437d69c5.json and https://artists.proofprofile.net/proofs/artist/d2b315d5-8a99-4c5f-ac0b-b927437d69c5.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 0xdb271784a1f3d82f67baaa1678df30848ec1b830aa054003eb0a41fb1813794e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA6D21700201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff8cf3a7fb84dd53d23914e9e72ce4f6bf3539c73e6738eba9213750584262f. 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/CA6D21900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764cf7b3a386acacd656583a344d376f1e34b4e0481ae72987a3fba8c02ee213. 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/CA6D21900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840a76f78e0b50a64124a543e10c6db3234edce54428e7ac0e3777ff05d3c212. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKPL2099403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe254b4ae6cb9571198dab6f595ef10cf494d280b03e6528fbbb2eb88dd16e0a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CA6D22100315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac9158e2d9213dcba3c17f55745b9516d3f8d277f0c3178bfca7c21c9b1a50e. 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/GBEWA2204430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac9158e2d9213dcba3c17f55745b9516d3f8d277f0c3178bfca7c21c9b1a50e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBEWA2204430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a81870da0b3e86697c7b943a52700e20e291f840c48a2404fca3d53100bb43. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA6D21700141.
Good Thing (feat. Kehlani) - Grant Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd2998837db15f4bf173fb053fc787e73f23b36c97eda90a5da3fe4ff180257. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM71925091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff8cf3a7fb84dd53d23914e9e72ce4f6bf3539c73e6738eba9213750584262f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CA6D21900104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36ecc99de22b33a56f0e022f8289f70344aab3d867afd7d8e0a7bd26c364cc0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USAT21701571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9facc1649ac82734e69740afa7d660b97f6557b751820d57c509998a35ce8088. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA6D22200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764cf7b3a386acacd656583a344d376f1e34b4e0481ae72987a3fba8c02ee213. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA6D21900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa0a70b23578994a1b402e6a34f8b4dbd093d3d28ff5c11e6c8c244405cd062. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CA6D21900255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe254b4ae6cb9571198dab6f595ef10cf494d280b03e6528fbbb2eb88dd16e0a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CA6D22100315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fe5776202863e81944532d5176beb86d124469d92ce28f2823132678092f6e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA6D21800164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7281756240667dfda49f49fcb6f65d9d1e39b45c769b1f2c90b8e3f5b452d7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2116666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2ea8a7fa1a3896e179e8becff5f7d9334073e9c8db0d58f960148d9bf524f8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA6D22400002.