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 0x57b910be3f3567ccda9201cece51368bec6f7850a4b729b407331fa9b0523bab. 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/c5d252a0-7406-432e-81d2-5fc35d72239b.json and https://artists.proofprofile.net/proofs/artist/c5d252a0-7406-432e-81d2-5fc35d72239b.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 0x47eae854d06aadd0d6c043209245b4c887a159a79eed2757f5f76e2a9cd00b48. 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/QZDA71978378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19097a068d0f22ff01fc69e17cb4940cf564bb9a8ed0742d595c23ecdcd2945b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZDA71978379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ae7f4183a1cec401ff7be5878760c562666d66a34326773e6b297dd7dd0189. 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/QZDA71978380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11079e4f7ab7f8d01fbd357e96fc0eaa4b974de35982bdafe359c05d00a6727a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZDA71978383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf75509c6a4f927ff0a0af5e7de75519a05010ec771974e6f5d1bd47763314f8. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZDA71978384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a75bd241588fa9e32bf7df74ac31a0a40a522fab96c8457b8726621fad7b9c. 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/QZ9JZ1717590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a302c797cffec3690b090af7d58c2c5d6ca1c63579c07569176ac2393e30fc8. 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/QZ9JZ1717593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a78591a12a3e6e9482fbb514d014c41cdf31118a6d81bc1abadbbd50210dc6. 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/QZ9JZ1717596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aaa08b242b7306ebea96e5a1dfaeac2c407dbc1b176a37c0407d172639d494. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:50:55Z), 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/QZARB1829674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02522750e8e5698e320455f108a6bc176d4287a0600129d6d741a99eefd263eb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZARB1829677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83579b99323ca2af896e2c1b8098a749dbf41ffe3f8cfefdd2c4cc93089f27c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZARB1829681.
70 Cm Shihou No Madobe (Dragon Ball Super)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bc370a963923eeecb5f147a076de9072d1eed6579708f33d0993523ee2d2df. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZARB1829682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fd51201f85184ded76366bf137d9f2bc07a9b024de3dfbc6c9927728179032. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZDA62075574.
Escape from the City (Sonic Adventure 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac97406e92e13db32a04636b51338435b39db833c7ac5558d7f07db30266726c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZDA62075576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd008644e21558600f5ea0b4795f2df8b426c639f594229eba9d0356cbadb60f4. 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/QZDA62075578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5170634cfaaf7c53ca9cc3f992b48c2750c4b52ab09b8451c11a6748dd0c0b22. 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/QZDA62075581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc09ce533c82ac32ee69b78d4830edde0f9157965acc64390250fa1ecf161d2a. 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/QZDA62075582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3867f99efbb90ea4518869e961295ffc48c923e65587cd00b5b9fb4a736850. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:42:06Z), 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/QZDA62075585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41058d79ab2702b1d9368946ecda47f4115b25c945aa12291c1d30b03aa0b7d9. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZNWX2071533.
Pegasus Fantasy (Los Caballeros Del Zodiaco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94951de9c7fd414c6495f5d821224579529dc15e6f833b03e731604bab84d4d5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZNWZ2004642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dedbbf04ea0971598ab763ec6a0ca3a4af9777d3608712b83cbe78a69e42e6. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZNWZ2004644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf9a0db2f9086ee07900be0ce7944bf0cddefb7e4d49a4407a2060de7921b9f. 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/QZNWZ2004646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde882e289a03646d169c0931acdbe1ea9b515525d374befd643e49e00f2f60c6. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:37:29Z), 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/QZNWX2071542.
Start (Music from the Original TV Series) (Spanish Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308d9da761d0ec66a53f1e709e3520a75e97266ad5eaeaf53582a9ae207a62e3. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:05:58Z), 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/QZK6M2140318.
Again (Fullmetal Alchemist: Brotherhood)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a8620a1e3ecb78c23055bd288b14b20681cbf279f6e022e3d6d3e74ec59cbc. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZHNB2273114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2599e60a7daadf077b1f1d2780d75eab6a313e8788f099d136cd066f2b6cead9. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:39:26Z), 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/QZWFJ2394197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c803624c07ccfd4aba86166c112d39af5b53e4f719b5655ae25befccec9a55a. 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/QZWFJ2394202.