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 0x65cfcdee07063663cc1269d91f73c2fe28dd7d55d7dfb0f770928370df82cb8c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b059f75-e0d8-4385-bc8b-abd065b13c3f.json and https://artists.proofprofile.net/proofs/artist/7b059f75-e0d8-4385-bc8b-abd065b13c3f.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 0x78a6c16a7268cc6bd43ef5a94703b2e59f74024497c2b7ec72de8f228f992a6c. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/FR2X42216191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac11d694f53137569ba7920bad5dbddd944ed1163d6431606f1821db65dd9d79. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:21:12Z), 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/FRX202298552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b72b9b333716b4e02f8e3a8c19d3ee914054b2885cff464abd4b204d0db712. 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/FRX872234109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431e226b2f57f2252e8d2911817f93f712a34ae4de4d24fb3580bb7f82fad978. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:17:26Z), 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/FRX872243718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efec50ae087cb5e0c36e79c091fdf67f001bac43a16064f03ae7f81a420d8c7. 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/FRX452387486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a8c2f3181e31b9d7f2e7cdc6c3732555eae3216a51ea5a5c46c04bed928329. 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/FRX762394825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5a9decd87a2392c2dab0cda677894e67ee6b2aff0f5ac7d05508516bf07837. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/DGA052311100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec16b1a022ef4194039dc90a093e676b24430a8a4517e734e62cfbe3b43a9383. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRX282410834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ace0d1c84591621a18b0200724b0971689c4fb0625cd99f1f1002cc6a6d31b7. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:04Z), 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/FR2X42591734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1d9681f9a0fbf78294329c6b8ba2fef7310b43df5055a3f03f2e202adee716. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FR59R2582774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ed173b815d628367d7074a8bf38d95fa8c7195d5c621ce8af88389056a3ca9. 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/FR96X2593771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb4be8966f9aa6322343bb6902fa33dd147f2d23b75a7fc7312aa311785c3317. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX202552883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda505bb729d81624d4ca6ff323c533171af3c8576e538ee3ed033d83e6c3492. 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/FRX202552881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8946291771196d0157a3525beecfd2a633d443b4e26bd5d8f506dcc1e6423c82. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRX452587029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc127e6315c576ec788235b1cd4ea50eec7a15f06316df80ef5f92a5e0a8b648f. 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/FRX872530791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0687ba167cd216f7a2e376ccd84b6626b94bdee410c390a9e9f33f5a6309fd. 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/DGA052527072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619acf71180ef2c2323c5a3b2689087590a8f10488e05d4580765f5e3f0120e2. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:34Z), 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/DGA052556904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae3a736b2b622805b18fedb0415ba3f06b37d0e99d92adf3f1993286aacae16. 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/DGA052586266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68ad2de614cc84844f1aed4f500afc5709902b45fb877c17b0c101d929c5480. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:13:43Z), 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/DGA072512522.