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 0x1cac954d0fdb4c8d9cf758af0804f4144dbe4adf7d7980d03b83607bfede91d9. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8ff6a979-7b55-44ad-a0b9-245a0c899d5e.json and https://artists.proofprofile.net/proofs/artist/8ff6a979-7b55-44ad-a0b9-245a0c899d5e.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 0xc1c0940922045229e31633a29bfa2394ab80de99723b1214c9bf35296e3fdcdc. 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/TCJPL2506886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f72958cadfa6cff4f491aaef900ee85a4ae276e69a3385f9f54de632472a63. 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/TCJPL2506887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaf79b02dd646b001bddcd12dfab40e1f013a436e36d0725c008fab2d5da33c. 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/TCJPL2506888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf073989929b919f8f4022495a49118c6bdbc14d6e107f1e0ff383081c5382034. 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/TCJPL2506890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faecbe0f9f26e3c6650e925b20e936e6b25bde706d17673649d5593dee27d71. 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/TCJPL2506953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab67472918888f07362360d3b3a0544acd438969c759adb4c2f449eef41f110. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TCJPL2506963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812f67ac095327fdeeccd882c260107b6afc3837514aff4fc4e49a7c47a2b0c0. 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/QT66J2570689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffec6b9a61dc0c17267b49efb741d533e828f2eb42829207f0a48c84cbb660f. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QT66J2571004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c2b3667315547ebb6ca3dcc851c67cdf0134af536b3754bb46e4f854ecfad8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT66J2571018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa3a636d0db455544844dd41940ea0ac0ba24acf2169c6e27fb7bcf82eb13d3. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:41:23Z), 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/QT66J2570579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362f37c088f21036dea06a43fed2c7021ecf9a4b1608eed5bb7da8cce42a43fc. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QT66J2570583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34573cd2b767b77f4808e371accc5dd3f88d717b6f676dd0d35e409bdfce51e2. 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/QT66J2570588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f8d8ad9d1e105ed5797a52dbb77421e5b451741469b97ef029a7accfb92e49. 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/QT66J2570601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703934767d4315f26c273744bea64e675dbf38b5bc012616c1cbec930b18f082. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QT66J2570611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08943363512b55db2cde2d08e41cb487c4aab7018b3f682951add0192cf02c88. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT66K2532590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e961453b322cb25ee9172531d6990e11b2ac3c4d0f07205017a1ca7aebd006. 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/QT66K2500329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34e0a8bf5ffa3fad06b4216fddb49023e8ec2b922fbb83ca0cd5029aa703c8b. 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/QT66K2500341.