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 0xdd7f297918aa3553236f557fe3ee1610dc333c820566f69244b85fd50313827b. 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/95f71309-9357-4b71-bb06-4b595db89c4f.json and https://artists.proofprofile.net/proofs/artist/95f71309-9357-4b71-bb06-4b595db89c4f.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 0x24be1b3fc5b67a310e6c81569b423f8033d9bcd688ae70a36142fc41f8389944. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/RSA221810580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0712b4344448495213d433f9148d973f29752be27f94ffbf1931809c9a6f28a4. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/RSA221810583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2443c0d4865c4258463698dd9b48625bc0e96d633da492f5bb14fbd32cd0816. 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/RSA221810585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efa83288231319eaff947683c56aea0ee236e3e9a451984a8287bec884ca9de. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:22:47Z), 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/RSA221811022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d076a915980b11c0507f1dc8be19eeb838de640964c3b862ab54d35eaa169a. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/RSA221811024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec6736d189414268b2b3f0b39c7cb9b022ff8fcea70fe5fb40bbf5d8f7d7bf9. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/RSA221811025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cf51df006e56437cf6148018579dd76f68b8a7357e1503373fa21812c38d6e. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/RSA221811604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e75248d364d4cfc77f2b972014c10fd345a705de5fba58d67afacdd58c8fb4b. 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/RSA221811608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb551710a1c938c76b1d1318dc15d289ddb3265a2d2ea7f44e1bb94c7176eccca. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:10:40Z), 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/RSA221811609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcdb9a7f20e79a2b55585a9dadb3fb12ce823e13b22fd7a874510eddeda8892. 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/RSA221812274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd5849362ed706d195eec989c7369ea66721a6dc6e43e3469ab08869bcaf00c. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:02:40Z), 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/RSA221812275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c01aec8ae5c75358e660484bfbdc93490285e1a5e28d9f95e8f4acf4cff3ae5. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/RSA221812276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf75d89bba62b84743dd9e602a7d3081eb9aa94a9bbad9eab8a5ce44aeaa5792. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/DEQM91203547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f7d5112cec7ac686df8d782ee4d7e95898525f2e0602db7f98312374ebfb42. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:50:17Z), 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/RSA221813699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e652b124e30df025fe3ba569c38d47cbbef899ffbeea2626c788ec42ca742d0. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/RSA221813700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabf053913d8bf513313eedd281d2490406afe50f238fce59b193590fa4674ee. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/RSA221813701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7712d424f785b5e4f9e2e513c0bf2867310a9282cd8a9f0ad4a43184c7768ca. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/RSA221813706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaee90aa40ad3d131748de8e13f1646b09286c2f4e3eed94b264d885fcc1904d. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/SE5BU1886542.