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 0x5bfeb85daaf8ee1bdf17b07a3d8201cb4e2825848aa9c05224cd817a147c1b29. 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/bc271122-bc3b-4b60-a6c5-1265dc68f127.json and https://artists.proofprofile.net/proofs/artist/bc271122-bc3b-4b60-a6c5-1265dc68f127.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 0x76bd693d82ce5544b8d6a102c20f7fe576c181b2d1014da1ea8a9784f2bc97f5. 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/GX53U2352961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bebd565498590bf03d252862d353436e23e3f034f62da07e6b73c426d5314e6. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GX53U2352962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397390ce036171e429f2da252f498cca18da0bd013cbe983312fe4175498c817. 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/GX53U2352963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997f350017159519c15cca35cff1ad0b301c26230e17808390a476707130c687. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GX53U2352964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7930286e7e737d945944653e36105051dc17c877c950e1c0ed994af702aaa10. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GX53U2352965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af40b88b2647253a82dbe62eab6c5a19edefcf2f3e1c19b9b000d6efcd030d8. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GX53U2352966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b1ef0a34d5b272c3ab0db262873d1971d7915d758ae7b6db41997f9ae3250d. 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/GX53U2352967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2d6f0cccfc3199c422b5e85e0e44b06eabef784c56c7f41aadfe52ef554dbf. 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/GX53U2352968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b40837fa8de9c4d71e5d660495292bcbcef7dc3fad44a28257a4559d5914d7b. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GX53U2352969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7dee3ce2d8fecc786068d6db680c2f99405dc2290fddbbd3b3ee040f933c6af. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/GX53U2352970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf6f6f08f771f9562891813a777852d00f352ba12fb4ee76af73262096e2865a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GX53U2352971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52928bc1a1ca6e0d1589aefe20cd952e8f7691b8c3b1f11dde050128fcdb2ebe. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GX53U2352972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15569e4e77c7c66de5f942d351f21a1b0c2c23c7f59790037137b582d5204c1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GX53U2352973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2915f210c5ab1bc38d3d4172e39c9af6c2869864a8aab26f32832991f49088d3. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/GX53U2352974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57268d0ddfb15515399924ce6f48f720edbdc8830b66d3dd0fb85c3eddf60068. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/GX53U2352975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c7fa44b8b5d8812bf424da0677fd4293c7249a342538ff4f846d7ee99532fc. 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/GXF9Q2586054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4e348bfb5da841f28bd0734ba602c7b4713c292081eaf68b5463846c8ec412. 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/GXF9Q2586055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac33b91b5fb5f0390e08a54b74e1328b22773b288d5c390d4f6294c24e7e0a5d. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/GXF9Q2586056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fb14aa84fbfe144b0ed3854e804f9c25365a269a8651d9f6ebf0b63702c49d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GXF9Q2586057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf968420181d35eb79db932a693276b979e6dc28ce860bbaedb6e91077f9f0ab7. 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/GXF9Q2586058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ae771d7e69ec1d7f146dbc74e1d2fd07398eeb01e2e958eb899a0f25e5c39e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GXF9Q2586059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2385958ad97d5dca0834d05fcf1a12cff4fbbcdca9aec5c809eabed38082fb57. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GXF9Q2586060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8725b4cb0d3c5e50a8069c7f36d40a33abd122340a069a166154f231f90a58f2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:42:11Z), 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/GXF9Q2586061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34140f49d6e76904e387294b991805fc604dc3fabbf29121951cdfdc80143dc0. 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/GXF9Q2586062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db9a40e2d9e6b3f339cd70afcdaa1400844d477da1320d276af8ed7624da363. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/GXF9Q2586063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902932c34dc900d4085a8d9eb0f2eb6aca93a000b0acc2884e7505fa3f268445. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GXF9Q2586064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fa8fe8c3c2f211241a7ad2984166ab46c3f248943e4f7a0ea1c7d34f743851. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:02:30Z), 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/GXF9Q2586065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8081e08f77de1bea6fa121691b4eb8ca53f0a0bd9cbe0f66c2437f3c0ed3e4. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/GXF9Q2586066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb866aee52839988d407caa1d361fbce88679ab0b33e5d8d2b6d52a27dcdeaba9. 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/GXF9Q2586067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0620812d1b6e16d25c85cd8cc6d435fafd08685105b22c49ae819af1205480a. 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/GXF9Q2586068.