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 0x9a2a4c86ec77f8ac293e9cb6b89338a39ae8db294fe7a39fad6ca73aec9d02aa. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9960d938-e8eb-4622-be75-f4d3c3071bba.json and https://artists.proofprofile.net/proofs/artist/9960d938-e8eb-4622-be75-f4d3c3071bba.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 0x3bf9c9b17cab301b5c1c2069c18fd1cc8168183051e746475829fd5c6e69f845. 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/JPPO02303196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41da3824d13c1e5b9393646050794152d9c30f6a326a5c7608a9fb45c686f43. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPPO02304187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7bde2b85c9c48bd6e5335fffcf06f1e1509913eccdced245512b92fd8853af. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPPO02004181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa087e1878e156b7152fe5fc044fb2cb508f3a1fda1facc1d948e67c0cf1e52. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPPO02102241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a43bcf4357313883519b705b37511d3f06d315b407f67925773a7659f336be6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ921900264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48dec993d20afdf389476945c3c93f19911ac08c4b489cf33a123753fe93f60. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ921815200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ff6972056063e1b027c3f82f80a8b24628bf4f3837784d626cd681a0b0fdc6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPZ921204029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6678007dd1f05945a379356098a97d72523d791e554a2b4bcc9d58cc1c03e634. 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/JPZ921701983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec7cefb5d055758c1398a8d04c41542c726f2cbe8fe47fc89c98ab1f7d510b74. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPZ921312011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71e705e36dcca560ce8b6be673c227156bf51dc80846913bae606076f598d31. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPZ921101493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e3f449cf7c8f06cb556ee0b7493b39bd247cea67d80ce84216ae0b2cc6d122. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPZ921101495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c428682786fa903dc73c48cc071ddf9e4086fe94a687eea9a64f71f39c62e30. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPZ921101500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c673035ea3c93740463ff086f3a0af614deff3c5a655434c5c36036c2c9cbed. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ921101504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c49e918abc93f337b94fa5de95900d4c0278a88f0bf7f54c24900de5a0d1fa. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPN000700168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41da3824d13c1e5b9393646050794152d9c30f6a326a5c7608a9fb45c686f43. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPPO02304187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf9c9b17cab301b5c1c2069c18fd1cc8168183051e746475829fd5c6e69f845. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPPO02303196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x049d1fbf20d23022e65340179d211785182705cec998861c1d1bb53be6bb8d28. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPZ921813911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f71c2a2e9aa3819506794b18509b0f728e7cec3d2dc198ccfba64cb90959ed7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPN000600438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72bddac198568465aca36281a02e517019fe51ecdd443b0a09ec5a728e4ef1b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPBV01021192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad55a044bc9ee0a842c41e85fe03f2e29fcb3517ac57bce65a9b8fe56fdb0277. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPKT00003506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d127699a691bbba6d5e89a24f66748d5aa10078d0c035ead40d79c3be9b5b7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPBV01021202.