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 0xa9e8d98727e48a66394d734abbcb8a5f2d1883cfe81020ce3b683008ee37f485. 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/7fb50d63-1b55-462b-a89e-27f24a8f059b.json and https://artists.proofprofile.net/proofs/artist/7fb50d63-1b55-462b-a89e-27f24a8f059b.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 0x6f2d8c1a30917319d4a4b9b942702e3ccec75a588e5c29989c14c863e1707b2a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CH6541814211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee72012a1117ab3d93e53061fd08e4d9b6486391fc0092d2891d24c4ae67c776. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CH6541814212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcbf43d3ad0ee5200404f78612c18f75d59ed8845fe58542276ecbfebecedd1. 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/CH6541814213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f502c7da1dc9b3811938cb42f54c46219fd7510a42db732e98bf0ea46e9f88. 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/CH6541814214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecd3989f933f30656ec324194435b88c7eb596c4c03192a4ad09cf03adeb614. 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/CH6541814215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb1ba185407b3344c3aba54dfb2f2e6d7b66e00e48d27d04217c27bbda94d98. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH6541814216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73099153b3f36e73473c71327af85cfe5e65b04a3e55f05c9ee6e64c4a552e42. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH6541814217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dae02c21e1b404800fb8732228ca8067c698f344b7e492a306968c95d1fd3d6. 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/CH6541814218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccba722efc831b563c59b7b36a9d7f5ff729ad6dd14f14357d8df20ebb575729. 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/CH6541814219.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2d056ba797311df56ea4cfb1751fb2cafbc5de4593d71117f4b694f4a199e9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH6541814220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69c1ccb406582db3c58e77601fba91ef52a0c4facf827e2314f51fcb9516d12. 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/CH6541814221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cd19044b2b3a4d64989887a6c65a90ec576420e3eab8ea396ab60f7108a1bb. 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/CH6541814222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db62dc116efd67fff3d7697c5e4865adf517745d0b7d148842c2a585fe07f5e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH6541814223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f95dbdc0ba1e115db7fe358a02862ece16a9d3fd870da4505dfb027e873f1e. 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/CH6541814225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d54bba2e5a9f9d39ad6f9feb432c9c69f674b0dbb032e3854aab82deb2888d. 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/FR9W11916496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ac53fcd38082e6a531c1ed803cd8e4d165244974cc99b33098954e4b7a90cc. 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/FR9W11900608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88da39cbd22cfa27c7ea04d49c151c8f97ecbca14b0a8b319d4a8b1e3b95ca0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR59R1766751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5690087413700d185b09fa7fa6fecf2414aeef7bab78b2f944f1e1cc8aecc2e6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR59R1766752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6989d4da7052a0ff868b04f5f35bc8a4df4fdf1880cdf0903a0b2061567af308. 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/FR59R1766753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911baa310d00ef1d1f41100b5c7a745844c4ae8a5ac847059afb47922f148bb6. 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/FR59R1766754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2221d0d0e671a6a6744206ac4cc09be349b1eefd41e2a71f495033f930c51662. 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/FR59R1766755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3275bebe9fbe26f512d9e96efe7eacd5a36fbcf35afba0a1251b3d4f83d89416. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T08:45:33Z), 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/FR59R1766756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9459f5e78858ed721235533ae69ef19ecb6491787a5ff5527e7cf2aa872be84. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR59R1766760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dcdcdcb7e4038f9ac9a3cedd52809116617321691be5efb5d826da0f224c6b0. 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/FR59R1766762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437fb9b7bacc8c68896dc746ada7ede49ae3bc9008daf3f88420d9fce2edd3b0. 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/FR59R1766763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd3f469682bbc6ad625a9061ed31b5edfe6420125b0cb688c19ba7789ef1f1a. 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/FR59R1766764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f078bf18f766f192fe28749f2f6c6a448464bcc2b048af5870ec0f6f1d8903. 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/FR59R1766765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5feaf23166155adafb15d9cc939dd705a063e568d816d6d697fdb5f2429f260a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR59R1766766.