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 0x21bd9b4473117969f217cf99f911a0bd131ce08995a025747d08b0fa1a6911f2. 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/f9a270a6-1731-4609-ae14-886ac003d0e8.json and https://artists.proofprofile.net/proofs/artist/f9a270a6-1731-4609-ae14-886ac003d0e8.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 0xe6d1bd87c2b5d06bbab320fb86dc5f10d79e5b9cbbe497431b7e432a29b57773. 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/RUAGT2468564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521ef06c2635faf4233c3603838ccc63c639d53c67a474b7c0557c08e0cad341. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:32:51Z), 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/QZNJV2042884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf97c5253747fb37b5658b1d2be5b3939e18a05f2074888f4e988d8589cf2b6. 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/QZNJV2042885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09a3149a420337fc2399bae39f7dc43fe59784299d22019cab8cfa94c0a0863. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/QZNJV2042891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b448ba021a58caaa43aad54443be45cbb63bd0100f452ea3bec7389bc85137. 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/QZNJV2071794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d6bc34d7a789f515fcbb46e16dbaf846004a37e7f2c7bc8fb95927a1f846d6. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:09:18Z), 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/QZNJV2059729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5abce4d12a13f35b0dabb8afed6cf230c885ad968b99174a7cd049b11f66205f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZGLS2248147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef0a522278ab1f0580d73ff7e71f6dd443dbac00df18d71038999b2b00feaf12. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZGLS2248149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9ca72b1f0b6fb4021926a488938109a5d494baa9ab074e15b42b0d6df7901b. 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/QZGLS2248153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc763b0b025951e2261485e5ce994185f7febca554843bf48b44e691adc0cd881. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:39:48Z), 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/QZNJV2072161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a25a78ed9ba1633cab2a261cb8f91fbbeb5ebc47221a6ea8bf9bad6c6a0698. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:03:31Z), 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/QZHZ62029456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628132498d7870dc47458ed7627dda1a8865210ddcc291408498e8dec8a55e4c. 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/QZHZ62029460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ee4a8d161eb5f1de8f4cf621a357f8a4dc640a1118e5a178af17857efd8bd47. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHZ62029461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f8e667708beb3e979f278ee92c50cf5102f4c7f9248b9ef301b85d62690ff6. 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/QZHZ62029462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28e14c88b036a67891f1dce5b71714a4c0ad2885bb0a2f62b117ffb8397f67d. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZHZ32131202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbe2e62d72706d6c95a18e557205b6f12ee3760f9e51344742653f95fc8d1ed. 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/QZGLM2234280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81159a43ca75c6c6df990406731a27597a2a95ea13a8bb4942cdf1461ffd4666. 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/QZTPX2230345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4655fddd007889400df2b22a18d841bed6f27c98480da58c9c4248cb9d5f8b2b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUA1D2321815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce0649af6fd7cd61d5c6e9162c5b0a741c3d0e8e3227bec6157ef7c84cf8d53. 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/RUA1D2321818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ae01ab0d7a29b93fc0c3d634830ec72e7330225c0ab09ffc2760e03f8addd9. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/RUA1D2321819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd78d9c5fca52b98e63af4fc113c6d547a455dace2c6f5a545ebcf78c18ca6d2. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:10:34Z), 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/RUA1D2350439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd56bc41f7b0b5f3ad1f8777a9016b7c5bcf1f62f2ced1d0785b1d22997eae98. 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/RUA1D2347376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3d5df1e7b422b3b6113d17cb855b3dfc73f04cef138cad0c5ffbd1bc5884a2. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:51:33Z), 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/RUA1D2417420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb79228f73453eee929f7122e5fe437a1aaf5251a7694913223c8a3a0d6398b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/RUA1D2492598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07bb8286d70a0c4b8567d10bc66eb07b1c0b0abd6238cd824e18484ca767b07. 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/RUAGT2455738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e81f895437b942f92ca1bc0c0185095cec892ee215c984eeafbd9dd752dd5cf. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/RUAGT2478629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd277515fcbfc15844fc36987d86d852c2e45b4d3b1860e86e80d40035084e9b5. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:00:43Z), 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/RUAH62406064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf949a92137085ec5d9f770e8b9f560046ca3fcadf6541459adc2a1708f926472. 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/RUAGT2544268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4dc9aa854001fa06ae4c5a08b9fee5589e0e92c971e084f93edb6394a183be. 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/RUAGT2544269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dda774fcedeb06433cf0e8741e5330f2b76f4e5e1a78e2c0928f9c69e406fc1. 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/RUAGT2544270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcadea0f44176c01a1d3dfb8282b38fe119bdf013fd6be7e709312db4bdb2f7. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/RUAGT2544271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a06c5a7865828cb80b196e12171d8a0ff4e02d043967d8ff275f30f7e859046. 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/RUAGT2544272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bfc26fa790120a4416cb8834c2f3e16cfe91d66e91a2d78be907c9b7fcc9c70. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/RUAGT2544273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45263a5b8435974100057e2797a0c2cb082e7c2f2667a19d97bb845e1999c84b. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:04:37Z), 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/RUAGT2544274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7363848523445318bb4086bbe21ebd6a5c2be5faf5b5865292493ff5071f00. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/RUAGT2544275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa205b3e88c1b0df37ad8f2778f78fec47e2577843a217c00411fa71b6bcf58b4. 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/RUAGT2544276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9602f20f8e90cf3f40b1de890342c9f4658cfbf271cc75de85f43a7e0260f39. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:31:54Z), 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/RUAGT2544277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbcb7aaa93986a72225d62df52a4165c51829f226648cade8a5685639766f40. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/RUAGT2544278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f25070abc5174b6ca1fedff367afe0c7b1f79dae7f450fb71ae7be722a2f40d. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/RUAGT2544279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0046f428117b9ca0b1fa8b9ad8b4087fc10bd2d2b2f4e30cca28e36ead2f1c25. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUAGT2544280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bc53f79921bb7c2ffdea55b58c38ab768ae813d18fb46d8d528d61739728aa. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:59:54Z), 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/RUAGT2544281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8f49315157ac8078387d23507243c79839b9ac52679830a660522218576aba. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/RUAGT2565257.