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 0x33fe608ac5c02b74e3264db46989637838db50c314c998a8a0035fe31e388565. 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/9bc20898-5c36-4ae7-9ff9-880c00a06cf8.json and https://artists.proofprofile.net/proofs/artist/9bc20898-5c36-4ae7-9ff9-880c00a06cf8.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 0x73b5d1657beb68e7f6b4f8f9cc4e705a3f4e9ad6a67bb6cd2e980bf56326753c. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZFZ42260214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d3c72d1a024250ffcd8aeb638dfb70fe21a766b9a5e005044e35dd17aa77dd. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FRX872251071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca15de8ab311f1b47b9bbf93964d07d567ab171bf0a07715712cb7d8cd7f2ab. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX872251072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9677959f3101c976bf63918a3927f1e3ed744e45e0c456e5e6675e91eacdb28. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FRX872251073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab80937b0434dd6f279b4c36aea446d61621647efdf2881309adb1ca71ae216b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX872251078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106804be2f51b6c1d02ab8f87ee01ee9d3c136f4c37ffdb3ce76ba6a4ba5cdd1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FRX872251080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62721a41c3399c2a236b330ee63f72ba42e125c2140e8b0d17c61b944a57beff. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:43:07Z), 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/FRX202496458.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6287ed96b596ea241f6241d3eaa55ed507f7253944c2b15cff24173f761802. 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/QZTB22274409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01dc7d591e7e3dec4163ce198ab8a01f7e00dd7436d61ee4d03e79a83a8a3f02. 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/QZTB22274410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7c007c3a8a5404a372d53ba27f1a8f6a8b5a982493e45a5f1740d652b45723. 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/QZTB22274411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4f7e6e232a5e06f7f75f556483d9c04035244ec3f5388ef02a2380d4802640f. 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/QZTB22274412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf6f2dd2d4a48b4de9aa1790c7a560e8da6b2aaa3672fe05822782a483556b9. 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/QZTB22274413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d6335289a68329ebd965ccde8944901b6fc3ed288ee3870436f9502a9837b9. 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/QZTB22274414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79afa86bc2655ce81c5cbae5964d06c291650ad9c3434da503a82ffa8ae54ca8. 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/QZTB22274415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48c55356ab99c72583f5e6b9344a3877b3d4b3ee67bb36547b993c55880df3e. 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/QZTB22274416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa007cdbccb5aa50234d28a70105dc016a5f582f5f3534fde2e15390f02c03ef2. 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/QZTB22274417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5241b8cce14b06136fb64754c1a4deb9e73864022a9ff6b4ae60a38c94af0cc8. 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/QZTB22274418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8db2bacbece6fe02989d32afb104b5c830e88fd2b774225c26bf685076ae30d. 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/QZWFM2374419.