1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x2ae1807d7f4e31400e74e5b6015fdf99cb99ce92e6e4c04fa4b9d82d89aef055. 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/ba76b4fe-9885-4b3f-a75c-8563e03ae3b1.json and https://artists.proofprofile.net/proofs/artist/ba76b4fe-9885-4b3f-a75c-8563e03ae3b1.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 → block OTSBitcoinBlock must exist at that height 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 0x318cf566cdbd11af8cc5c5fa24712a17b05a870f0dc491595304f83437aa4b37. 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/QZS642309896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eff611e01485e8a54c3e2c01acb79b39c34e16ce4e17c2857b0ee5c5494d2fb. 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/QZZEB2330133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe35a2f6527f131f2624dd7c214c08f576e9cb05ea9c45f009c78bb23cf8fef. 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/QZZEB2330136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcf764fe3f2cd0962fbdfea028a6f03055ecaad8b879e12060f40f2f9bf0b55. 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/GX53U2351761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91ba9bd876bb041bd670cff5b0b7cc1c06574ef6bc29ab8326b375ad999c35a. 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/QZTBA2434438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c80ea3ae4595e6c79c633b4ded18eb6e82d1876074a7b81033a6796eadfeac. 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/NL3WT2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a77326c4f4e1c189a1bed7cce5da70f9650505ac72febd66eee4ecc6fc1dc66. 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/QZHNA2444875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ea140609018ce009e9f402d627faa62222eddb0f44acf8bd943650d6d2ad73. 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/QZHNA2444876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3675abda9c2b2f2265c4793c81a6d2253e501d51bdec3904a2334ed7ec5591. 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/NL8QV2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd00d84f84d8ff2eaf32029b3cbe7076a550fc46e8f49fd7f1070fb854b0eae7. 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/NLCK42413863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8cda5bfd1f119174639db551ebe120deb6b3328ca4bb89312e3b53dd82fb66. 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/NLCK42413864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c2a75cbfb77419939e88def83b8b2730cc1c8013b62d6608c5e7c64de3e5ed. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLCK42413867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee7d53ab8f2c18d6513c8e713f3fcf40c8cea4f63f109987f91d739de08a9ff. 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/NLCK42413868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc90f9f72a694296554fcd49001ad6a9dad9b9b37bf0802d25835b5d1cfa13f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLCK42413870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f713a3260fae507e6970470539166dad7fb805eddf344600e75bec787a653a. 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/NLCK42413871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d50cd431a98c0b277471b0d33c2f9a368d90d6beea050f3c6067d53384c40a8. 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/NLCK42413872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84a77daec7e4cdfad36a800fdcf8c7a9f66d2d39a09f775de0c3156a2a4130e. 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/NLCK42413873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09751fb1970e964cff87c26b6fbc7ba3d38e8e8003ce6a6194315ae7580474f. 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/TCAIR2458524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cf7d547b731e07d111349d2925ef8958fd57ae37e43313c245abb3fb633d7f. 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/QZFP52472536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01b840e261d1a88fabf8a13fa7570a2210bd2b8aaa7440af8973f73a6869d34. 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/TCAIR2458592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b064f622de9b2c5e52ef116ba0704657fa0530e72e941cb1028b263b1210e86. 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/TCAIR2458645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x119f82636c69966957ea3ef57987b4d21b0210736d09703bebdfce68d124aaee. 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/QZWFR2481481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd597e04b46a77456eed57912f94aa9218edaf90f22acf420b4683c6b827b9882. 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/QZHNA2550636.