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 0xaa7c98f5c0dd509733c30bc36ba172578bdd6ec24ca5cfc6dc5d62a56451afba. 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/60eaa49a-eaeb-44dc-899e-8b209caa8335.json and https://artists.proofprofile.net/proofs/artist/60eaa49a-eaeb-44dc-899e-8b209caa8335.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 0x539f2b524873173a6bc8109ee59656b30bfbc6fd85481aa12f236b0f3706f232. 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/TCACX1729938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a820dc4cf5ef9df0faa0993450ef32ee96ead862078ca1b691abcf24f0b313. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCACX1729944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb805e5558b427995e135d58948761f3ffe5c1f5922f0a5cb8a7e5fb2442f7757. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCACY1734607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2a74919f6ec1e02951f79f7f48848fb6354463a13b551dcec178e9f7a5b808. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCACY1734734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03255985385324c232e775d8d0172ec0c9e21f461e6fa1e15b17d2a5c36811ff. 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/TCACY1734755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20b219d6f1baef74fee3c47707eaac8ce90aff3395a0608fc81cdf2ce7dc3ff. 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/TCACY1734756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52f02b1dfa267b97612fc0596ea031a8aa760ca47585ef9a2671178fd7c39208. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GB6JE9740801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e0ea32641e655d2b8dc3ea515fc9b37d7610348357cd79cfef15361d1700f91. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GB6JE9740810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb2e880c0922045ec42b9a1470575fedca85346267bb498b3f3283bdf1bfba1. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:43:51Z), 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/GBUQQ0090103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67818d1174c498d34f4dda25c26f604b7af47033b52215d8b1ad29edfe28a307. 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/GBEBR0700064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8913b8709722e841cd55b3dec6355f3df8512e873c570c8a0f06fdb2e744b8c8. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:04:42Z), 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/INS189810362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202c93a402249e1c4144eaf701a8d18e0e43da11c46d70ba44f7a5f49d6586c5. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/GB6JE0900402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f76b096a43104c2b19227febc2453c2c18946d2896eca5a184ca4442cfc8f93. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/GB6JE0900408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9abd86a47a487cfac247dfc94d2876e06e2463a741304c48cbd5c362cf81ec. 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/INS471100193.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x247dccd8b77af3376bc588b0cb930738591c66f82ad14bc3595a7450c3205576. 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/GBUQQ9755901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3707365e310cc1d6110dc90a6f3b437d79b94a483a10204361cec9149e5828a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBUQQ9988306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08d0be4d0d0c2e61942e567831a61cfdbc353dd7e2bc532a77168ac9217765e. 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/GBEBS1000410.