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 0x9fd53e32a4fa2efb941b95bbabf5d68240e1d05eeffee010fc09618cba79ea60. 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/a7da5fd5-d6d6-4ca7-ae3c-2db801f33148.json and https://artists.proofprofile.net/proofs/artist/a7da5fd5-d6d6-4ca7-ae3c-2db801f33148.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 0xfeadc6cf5a47b4dd43aaa1592657f883d24ea7bce7b3aee20fb7c7663931e69f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPPO02403551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b514cb950fcb6d84939d0c1e48a62e6642935c45812a737a3464775a0b40614. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPPO02401114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4ee61cd975b093d3a82a2b897b161de154f6a5867b55576e5b60db13ca672d. 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/JPPO02303201.
フォーエバートゥエンティーンズ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8feb37d18d75422dc3eaff4486bf71680a5358007f96a4680312c7274fdd778. 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/JPPO02304133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5e1a323321ade253956bee9466fb6fed8232172d3880b9f326b638cb16738b. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPPO02401115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4906bbf685d01b860b6753608d172c626ca53bd759523c15ef5f6e4fa34f93c7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPPO02401116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31b1e1b2f9883d651cadbefa2595d0a0e347ce5bda77899a6a0c3f8874ff600. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JPPO02400449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31b1e1b2f9883d651cadbefa2595d0a0e347ce5bda77899a6a0c3f8874ff600. 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/JPPO02400449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039fda1f55f5576044ca9c26380ea4f29e61350c11bf6de4d4a73b722107c93a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPPO02400087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8feb37d18d75422dc3eaff4486bf71680a5358007f96a4680312c7274fdd778. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPPO02304133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4ee61cd975b093d3a82a2b897b161de154f6a5867b55576e5b60db13ca672d. 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/JPPO02303201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6078b546d37e37a6db05ca5608821918b6f0ee16cd2498569704ba6ee72bb6e. 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/JPW462319917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd39d33f205518d1f805fd39f43742ef3d4f1d4d10665bddd78d35073bc3f70. 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/JPW462318221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025bdbb7cde4b96838c7c250a31a57122f2d1a02852ba95e375c58d7c13f9c55. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPW462315907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54941df38c82cc11d1b7cf79ceca36ad05cfe0dbfc40ca3cf9f23c296b900036. 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/JPW462314113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9deda0a81103192679d6c2e39f69860a4f2b4f38b84df4042a4fd55e52109ca. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPW462311523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57a954ec480595b21311ed5bee31fcc95e10344f8c93cf4072f061ba147b2de. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPW462310432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f35b64ff668d1224936a289984126edc8d6a03d2820650fc9b10ff460241d9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPW462308585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e8be8188d75faa72894542ce64ffa422df84bf97f84eeb8c524528a79941dc. 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/JPW462306857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa287cb781820c5a27484a28eaf054998ad51d77fef38faec0002c32a39b9be0. 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/JPW462306856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6115c490a49ebb6e2e991552676a13e3ffa467d7f1d3d9109d739b161123b1d1. 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/JPW462306265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6bd4f2c6407bf77c1e03beb909aee8afa9df25f68d7fd00499de299e8c7ff6. 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/JPW462304575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1042842a71039681ce3ef1ac50fdd9d1e816d8c51ca26c5abfe29add791252. 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/JPW462238551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07745da0a2b558d1074125c59dcf6c5486bdf501229131cdebe30781a4f01dfe. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPW462238552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55fa00284bb6ece3847d3882ce184e26ba28f227b4d030faf1f1ca00a583edf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPW462238553.