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 0x734010325f426482fd50ab011f674faae8b59c4730b4996e4220751653a5c7af. 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/6fb9041e-167d-4744-8cb4-5d7f606ddac4.json and https://artists.proofprofile.net/proofs/artist/6fb9041e-167d-4744-8cb4-5d7f606ddac4.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 0xa98f62bce90ee6e2edd1ef34886e581fe6fe856a7ffb0c3a9e8425bb11161f34. 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/QZES92156592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0566897c887e0b633607d045a62ca4b40b910dc9831bf2234a2d5c97a9f5acca. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZNWU2152876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0deeb95636a502a83fc6aeef605ee61a6d2fb40a7a56775b559aa66851887a. 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/QZNWU2152878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c920851aebf3cf4525d38934c5a3926e79f95132bebea8de57f95a54fa3b62. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZFYY2281181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a09161c3534299f7032671d7ab3fa2f22052869dcce127303b2dd3b9d05a8a. 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/QZDA82269953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37db1394fbd6e172fc76fb2f0848c3f770bfaa8da5ce50d3957085fd1e66a757. 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/QZDA82269954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe922a7fb9544f5e14fcaf5e775f7b2b3dc38ee8c26fa4b023ca5c6dbbd4184d. 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/QZDA82269955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f7321ca684bec6c8000c136c854623034bbdca832034b4d7b68b13f14eabf6a. 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/QZDA82269956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b23577bea323087b9357d3424b95d894eaeb0cb06d8f117a650b0fa28962b78. 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/QZHNB2204713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a7dae52a84f7106b13a7c720faa70196a149cf834412343264ede23ad939b6. 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/QZHNB2204715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef921c686cba1b7460de4f4181a55feb735d3ab1c8b90757c4764f21a33099e. 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/QZHNB2204717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d82365f2650d3620815b8e8b2beb5c4496ac9a5bc9c3b0ea0dc1bf2862831f4. 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/QZHNB2204718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5515a48198d6ddfcc294c809155e7d263a17654d9f6f28451f27fbbdf570617a. 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/QZTAX2271083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cef77e2d11af255525096efcbdae5ce2bd0096f303239a403ad0a5b094234f. 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/QZTBA2220070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41752a477b91e6d1ecd6c82e3e2cd3abd9145df764b30233450207611a4e8371. 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/QZFYY2368388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e992dad6dae89cf6c55d27e1e7bfee0049f86b59da36ee8fa28b6ffbf3c04f. 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/QZES92381833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc830329ecc0daaa309814b80176f24ad6f215e1f9cc2865805d4d46a9e8a072d. 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/QZFYY2449667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94454b05dc6a0204210dba3ff687357c48a501c67a0d1fedf936abd46ba9a52d. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZK6M2408446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c697b140520c8411eba85021a4093a6a097026ef9935e968c6dbaa4689b5362. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZNWZ2453350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09cb946666334833d32a64f7303cd373f5bb81bbd4eb6afb02300003d2e8cfe3. 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/QZNWZ2453351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceda9226502065e027f729d1321e0b9d2c1b6f8ef9a34f99391394b29fdb735d. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEZC62575507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fbe10cd46a656bbdefd32b6dcfcc328cfe7224a3e31cc663cfd43cbf1e032eb. 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/DEZC62572610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe551ba33681bfcd44a86c90049169a73ce986a715b8dd57921707a7f98cfa3dc. 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/DEZC62461671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bef55fad7515fdf3cd15c6984f595c8c8d0225d078c6f0d066125eeecbb5e30. 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/DEQ022383199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd43f06b9941582a065af6647e6393299286a5cec97da98034beb6d2aa3badb56. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/QZTB52293012.