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 0xe9335c394b90d1b929a37c7715fd6bb032351c54c7460c207a35cb6a22b030c2. 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/962a8ab7-7cc5-4143-8a7e-21d466181009.json and https://artists.proofprofile.net/proofs/artist/962a8ab7-7cc5-4143-8a7e-21d466181009.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 0x0bbd80dd3400d4c6b57b3cd94060ff4722e04ca1c5359e588d085650af4e6ac3. 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/USCGJ1058188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1b1c9be02497329a5a4919325c61f0fd320af21ad1b86abe2e47dd5ac658e0. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:48:01Z), 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/USCGJ1058189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf427064d751289c48c15c2fc9042d2c3cf4234140c884b3dc12b0041e69f6edf. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:19:41Z), 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/USCGJ1058190.
Euphoric Field / [ef -a Tale Of Memories-]op
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4ec7389d436bcff1487bddf3b5abeee07a295aad104df1ed8269a676ddcd40. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USCGJ1058191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8ab8d75032831892fc0e1f8f0ebba0f55c1079616b5653f23018e5a2f29b97. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:09:27Z), 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/USCGJ1058192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924df4ba542d67a0cbd4dd1784747fec605337df6dda2ca74824e1b19287bfd9. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:01:01Z), 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/USCGJ1058193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd65c63a582f2ab2a2f9088b419da99d570cea8e6ec7b74be168e23e07b64d6b. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USCGJ1058194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3492820c767d5e9e1ea3d6fcc3f1fd057b6ac9f6ec3c972d34454610bb2f69. 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/USCGJ1058195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50197d8ebc1655f8f3f11179573c1e15b2e439da924a7f62bde1448c5122bc52. 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/USCGJ1058196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2558d687209098ddfe8ce813468727cc940c2791c0e036a2737b83ee736250e3. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USCGJ1058197.
Mosic Kakera / [code Geass Leouch Of The Rebellion]ed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa27a40ba859372e4f2f6292ba4e05f4af630645e4bc01111926fdcb51bfdea8e. 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/USCGJ1058198.
Naraku No Hana / [higurashi No Naku Koro Ni Kai]op
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf21798ca946eb606e66e2fadac7b8935b7e25c5eefdbc30745666e505372d1b. 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/USCGJ1058199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ef7ebe4a3a43be283220e1c8a135bb75dc3fb41358526879c7963d4b9b3d80. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USCGJ1058200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510f4bbda6caff2287e901f3a548e4b6604fd0081b486111d66dbd0f6395262e. 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/USCGJ1058201.
God Knows... Silence Arrange Ver / [the Melancholy Of Haruhi Suzumiya]op
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a9210a50505692c2bbfdbf32c2a431885fe7c727bc0aa143318bee59e3cc27. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:54:35Z), 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/USCGJ1058202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6ff95d8d867adf7379ffe40d243d97e1cf191f332fbfa01d5e6d57e58b683f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:55:15Z), 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/USCGJ1058203.
Da Capo -dai Ni Button No Tikai- / Pc Game[d.c.]op
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b67f4b57fb1123ec5c5721f80c81d44b46af40a248155a30ede11fdfc0a8ca2. 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/USCGJ1057692.
With Memories / Pc Game [memories Off 2nd]tm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb44dd7aeab1e0feaca24339143c94fbc21a715ae78a7dac035406ee62b7f17. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGJ1057693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fd14aa9cf7d138eac32e0bb467fbec129e1e031b56bcbd76f3428347f90ed2. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:56:08Z), 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/USCGJ1057694.
Ai No Medicine / [nurse Witch Komugi Chan Magichart]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916795bbd51c375c0cb39ef3bb4ae158e362c7383d5f3ecfff9466b368a76416. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USCGJ1057695.
Firefly / Ps2 Game [memories Off Sorekara]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368b35deaf294f33bf505d9e49c3cd7bfee78d0088e357b060eed2844aa48829. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/USCGJ1057696.
Rumbling Hearts -orchestra.ver- / Pc Game [the Eternity You Desire]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70fe138f97a8ef66b3cbb836cf5c0e8a136907e3634884e1066aae9fc69e8330. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USCGJ1057697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a8c4b2e018774b9be835da35ae850f1d4838b9fe259b297a1d565175df1b5ef. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:00:07Z), 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/USCGJ1057698.
Soredemo Kimiwo Omoidasukara / Ps2 Game [memories Off Sorekara]op
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5393667496c8bdbc95d424ad5b067a9d0c13eb9bdf50222696c2428817315a. 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/USCGJ1057699.
Precious Memories / Anime[the Eternity You Desire]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bca1a2fb9e8c5eaf5c15c77f3abed94212f911b393b284cae143cd1c31bff67. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:05:18Z), 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/USCGJ1057700.
Hizashi / Pc Game [the Eternity You Desire]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd8bde6bf1d8d1cf2374a8711b74087d175928f65b9419dc1ef6af4da21eb73. 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/USCGJ1057701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44362602992390d964cc3993da914666cef1bb0fa835fa708ef2978fcfae7f8b. 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/USCGJ1057702.
Kinjirareta Asobi / Anime [rozen Maiden]op
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08386a076b2acb52f324138cfab56f003fff05b998ce0e7d3ce6e54160046bde. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:32:40Z), 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/USCGJ1057703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9802738cb7dfc031e82dda80985f9a59aa286c2702e9c189d2657ff88c58c547. 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/USCGJ1057704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b4aaa0a16fd138254cfa8c4db8546a87860ba5af2babe37165f6925cc83f66. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:34:22Z), 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/USCGJ1057705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x614faf2bbefeb17aa7b021a100e8e9bebdf3a67048b32e5750afbbdc7ec6487b. 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/USCGJ1057706.
Tegotaeno Nai Ai / Ps Game [the Season Of L]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb979b0a3bfaae384a05ef0f10d760fe86ee25462b476a9744155131bc95d45f8. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USCGJ1057707.
Happy Material / Anime [mahou Sensei Negima!]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f53033f1dad8b74e7190e907f6f1ed5072ba0e24048dec746096825176f730c. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/USCGJ1057708.