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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078f8d1a139855c41b850366bae8783bc8d930e0826c1bc8c0d1d3607679b5fd. 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/1b036852-0668-4b72-b5a2-69d9a13f17d2.json and https://artists.proofprofile.net/proofs/artist/1b036852-0668-4b72-b5a2-69d9a13f17d2.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120a6d1b171f6c15cb54a3ac4e0236f88f08476503cdeeed0c85a771c05e8add. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/TCJPK2045497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52704fcd26682c1ef78bbe12a7a85645ff66ab1f9beff97a7d83881ddca4b05f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TCJPL2036766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02973244bc3a0a88daf6526dc2b57b207ddcff1ef217ee3e32b561a0b8a6f196. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/TCJPN2029481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d25a0bb26a057a10e2f280a63d8971d2b869ce816ee64800b86fb075a830ef6. 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/TCJPN2171985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665e445c1a0da625e0c96937e1724d86f37b4627a21ca5c2968c39f0ac7e4bde. 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/TCJPN2171984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e136a8b955ef4265597fb9154ae3ac6c38ebdc8bf0001ea3944af6f92c3c90. 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/TCJPO2119978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49ea793ab009dd7714e19d71e52e085f9d017755a705634e526341da5116529. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCJPO2119979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2948bb12531a77cdeea8c599c394d7d35cf81c1c99ee0b84fa2f5cfd4f395e0b. 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/TCJPP2134536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5cb089208cd310b86b9ffa598900e1607836063b329144a63d3b6d11039876. 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/TCJPP2134539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6de9e19539335760c28a8c069285e41eedea0428aac95092a670723058a8841. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/TCJPP2134541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a26ac08a2192a5b09a13c738626bb6d533c25bcaa9e61ae9f72e47e015f334a. 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/TCJPP2134543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125d647ba1185675263fb4d43eb0597cb23b1418871f6b75db1e7ac00fb7fa16. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/TCJPR2204106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe277097aaea87e5c21b9902dcdf2e2db01768bdd1b38558e850843c9f4fd8bdd. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/TCJPR2204107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b7781558d65e3d1eb95efa35028035e4893c937162c413e402a899a157a4c9. 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/TCJPR2204108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d80457198b7ac794085a6d563984c8e6bff15119ce8b8d6f1eff59c98c8fff. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/TCJPR2204109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43cbfdf2fb0720768dbb3a19764ddda85f18436d64e5bc25fe203b60175414c1. 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/TCJPR2255056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c740c801af4b26342ec1db5827f148416407b02ec096393357274d45f5f76cf. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/TCJPR2255061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cac25ba1718b3d19925e5d1692b61ce8106c83e357c1ba37905fc6914e3afb5. 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/TCJPS2281855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1997386f9b1de0bf4d078cfa486aa285aec337044cd6f3b6b748b05caf1efafa. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/TCJPS2281859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232b1799319193a8c28199f1c8fc991b16d2ce5b041b6c5e761f3384d0c27296. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/TCJPT2205644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b59c776e0631f92d1d1a8a949d9ad66044cfa128116e0a657bf8e52e4cd783. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPT2291382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57cd467137e53247cf82436b539a37e84ee30aaa72c9d02ea17c8b58dadcda0f. 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/TCJPU2389267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fe00a44cdce674e2391d1a7911ba8b8922b6b447630310d9d6ae3e396ede5d0. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/TCJPU2389269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff3fbb83c9be158d468aa1711de275c739639f8eb2f1d445695cbf62b609a5a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPU2389266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4152141ac7f200054b4fddba6219afbecf49c1cc61b0616d1ba2c88d0cd3dcb6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CAN112400334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6270fff6561a70076043d7419613bf105f6c758b50a37e04e94f7726a0baef47. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CAN112400454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7776e0cb8351d169f02691a52744e5fc9675f248751f7c7ab970f02315077cdf. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPZ2449818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf28b9ffbd65317b36d3458393b7cd3c0ba943f36b64fa246bfeb7495743be66. 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/QZHNC2424027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471b730e36c8cec9ba83ff119f70a085df8d183ceba813a57899bc9848bad96a. 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/CAN112401318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ca1c38f5086186fc1959f9c33d4b1d66927ca481d0857756995216018a137c. 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/CAN112402042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3fe94317dd9b2a1a30e02a54c1d91b7d2e238bdde81d3797ccdb948f5fb3cc. 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/CAN112402271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20adb22797be8167650de5000147550943ee5ecb7344c19c8ecb2c02ad7405c. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/CAN112402272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24be12e1891d3baf8b6043514c4cd7db8c6d6f16704762d43a3630d1d5b494e8. 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/CAN112500690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72d8bf22407de51e91bac930008af78efcedd5cc6d737baf16539ed800fac12. 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/CAN112500870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24be12e1891d3baf8b6043514c4cd7db8c6d6f16704762d43a3630d1d5b494e8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/CAN112500690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c7aa8cdf8f7b26091c36160fa98ad92c0dae9f81d1118979ecd1940dacdd2bf. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/CAN112501003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72d8bf22407de51e91bac930008af78efcedd5cc6d737baf16539ed800fac12. 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/CAN112500870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24be12e1891d3baf8b6043514c4cd7db8c6d6f16704762d43a3630d1d5b494e8. 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/CAN112500690.
Every Movie Needs a Sad Scene (Haruhisa Tanaka Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f782767a9a24187b192f4eab88ed097c6b6f436f095b5cd5ce627f91469274. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T16:43:41Z), 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/TCAHS2300199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7c243882ae245651da6e93ff145cbced7ca055ee274e7885387737ee74c678. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CAN112500282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839e437ce6b6afd7b0b57f225ef838083042bdde2b5df857b0c93d36dcf33175. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USA2P2504578.