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 0x3743d88c6073acc14ed8b680fa175d5e961bb9926a380fa1d7024ec9a65434d9. 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/5905ee59-a67a-4f08-8395-ca3f77466d50.json and https://artists.proofprofile.net/proofs/artist/5905ee59-a67a-4f08-8395-ca3f77466d50.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 0x5561f84e6b5cb6898b57de765749ed2da85d70dab84268bc3b9d3f071f4936b4. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:44Z), 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/TCAJA2457239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ac083f89b15c0caaae929c6174be163108013530f167f7a390ae6442f9c89d. 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/TCAJC2452692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b0555fb7c4bc6a7834bf945f350d4a57bd62af9ebc6cc980cc55b5e9c34a72. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCAJB2452652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1079fe8caaf265b46f919f7c446d1aae8d90fba4e657a32259c317d2d2b36581. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAJB2479754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0200ad89e1831683d9a82bb416238986b2524fdded2ebab657055961808ca310. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:07:06Z), 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/TCAJB2477194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc868903c9ee4b77499964ff8bc8deaea35b2641f1ab049089acc96577de19f3a. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/TCAJB2477284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c373e8c3e40d6940145ebcb49e182c665d422e52d202b929037494ab249ed64. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:30:16Z), 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/TCAJB2477170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39b09c3e5a2406c1672b63fc9a861c52b134eabd0263a2e7bb454c24e5da9645. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAJB2479734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68844f7877135d3446d7382b5a62dcfc9fbcf8fbc25befc02e6d393b181a33e2. 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/TCAJB2487274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3381bd9e187061c27c44282e2ed8445df0dafc09bdd4d83fdae36f3aa35887. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:02:08Z), 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/TCAJB2487261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eba4e2da001c0e15b3f9456777fa63ac5fc2d76f0e1d700e14e7a1d9437c819. 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/TCAJB2498289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650c7e2326448139c4a5c4804cd68ee868ea454880a727b6d02e5a6f2b513f3e. 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/TCAJB2498124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2f343c192b2e81178d2655f33144998304fc6cc66429caca0216cd36bcb7f2. 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/TCAJB2498302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c8675f024df930aa8b9b5e273e2c99ab238a6e2a00cf681ae52829d664931e. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/TCAJB2498342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3100e1449999b9424c46a663d3e827b9e952f7ad42a279d0252f125b24a4b0e. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:09:24Z), 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/TCAJB2498163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1607455a3f765db7cc2a853b3a4fdec1c3d40942bb24bc0917d92b03871fe3. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/TCAJC2465824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa122197af62e2750a21386ef706cc82b27cd1411111ff4dc55e99ee326b24c80. 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/TCAJC2465847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaba9ad8edcd0d6749f45daba36152963717771c42b99b272a2b914b97356fba. 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/TCAJC2489347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafda6db86289674fe44af0c5ac413da1fdaad4dab77348995392065ad50198b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:56:16Z), 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/TCAJD2489282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8a41491309aff1c8c73992e0c91b2631ac34524b3c7a4f9e7c7d1219362b2bc. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:11:13Z), 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/TCAJC2489327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf39013648ebaf6a3e4434902307c155019bf90455c184fd8637d5efdba53d5d. 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/TCAJC2489264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6217f9e97cab7e3c9cbc05431e98358ea3afd9198e956a4eedd889e532dda070. 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/TCAJC2489383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dabe11dfd0839cdd9eb9aca12f65f8a93b1febbfc7798f9eebebed8fd19d8f. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T01:59:32Z), 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/TCAJD2419026.