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 0x3dd43a023a64fd00af0b907c7baa1000307ea9f188f2f41b4e395e1bca612e53. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/178c1771-eff5-4722-9e8b-2bcd7f85a011.json and https://artists.proofprofile.net/proofs/artist/178c1771-eff5-4722-9e8b-2bcd7f85a011.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 0x8611a20c86d7c6bea0bbb01dd211ef816114f81ef736cbd0cf69878062a40660. 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/DEZC62205444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cd73d0e7afbe7c0df015aeee8e72714e22d779bc9ae2cc87343d7f6f1bd9cf. 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/DEZC62205445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed371e9e61055dea0e135f2f434753ff1c820c5df571f1868e0b8e78ee2dbdfd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZC62205446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b834d8136fe7d891fe926b82dd426b1237a0ad6c90aa5fbe572442b836f16a. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/DEZC62205447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d4a791eef10d46e22da8fbf8a5517e138c3c497e38da46705c7d50ba9a090c. 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/DEZC62205448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd497903b463c22b3f7b5b854a5c43752da5e1262347d8082bb7681625121a20. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZC62205449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1192e96c583a6ed65679d83a66bf6e50f597bfccb5528289d77d9889adce9e9d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZC62205450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8462fb70707ceeec21c76553c0ffdafdce823fbbd8bee8a56937995a2da1ee. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZC62205451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd03700373ae507a680d9be064a55b59aa9f302aef74610c78bd98366c5a5b26e. 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/DEZC62205452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a54e7c539e5ec6fef551a215327b869a5332d6d88f74b37a4e2c91ca838e86. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZC62205453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c4f11e46244047bdba7a2b83b3664fa2664521291329be90f3726e9fa0a691. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEDG90734001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f44960cad28e84687e217af2201341e4bf430a3fbd7252a241eda94eb3fbca. 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/DEDG90734003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411f48d4faa2d954a1aea7f897b8ff9bc2680e82380173df0da6ecb56754bbb6. 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/DEDG90734005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9a12178442e796ae9b96fb243a50710ec24c78b2520b7cdb37efe5fdb03513. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEDG90734010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62043c48f4da81d71e54fa98c910fa5e9b867e5adf806adfa5221f2418882b91. 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/DEDG90734013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285181dc50c6a764781c97e541842f7af4256455d7d00915255b9fe5064e2e6b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ650707879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67f106646828ccb0c4cb1bae746eb576ecc9d35b31ac14f54d46a15b779a953. 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/DEZ650707880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c05bc0aed33cbf50ca2c33d7c65e824d4413fcabf9fc1194f4b2a978f950aa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZ650707881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d84338bbf24709280c9d6f9c9ed004b063c39c0171e65210d5bc192424a8eb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEZ650707882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839fef1a43e936fea448666cd593424712498f19b8e46e2599b0b189c5f610ed. 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/DEZ650707883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dc5c73b0ee691fbb1c912cb3b4d0bbd9bc0bebd38d1ee1f98debb68927757f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ650707884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d65cda21d1c594606701565e502dee1ade0da767ce6af3903b893f542c9e78. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ650707885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1547aca71b298d10be88abbd5e1984f08fefe84fe3d9097ae596d214f91384cb. 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/DEZ650707888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ea29a1f3f45f1b5bc62ec00527f48b39fe9c0038a6f45b4c426a690da0fdad. 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/DEZ650707889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139e87e247e0bf7b345c5d0202f6eaf6f9c88a819b093d35b971c812163e56d0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ650714472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b900d44f9d2cfe44e60b696af1c100055daa3438e85a32531760aa304d46ae. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ650714473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa713561f75764ed4dc7e88c04efc985e44216ed21e9575c106f12a7f4ecdf78d. 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/DEZ650714475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eb71f8037d1b38ef1dc7bc606b3bf602bc46ddcd40b1f08b624ee1b941ec629. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEZ650714476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8611a20c86d7c6bea0bbb01dd211ef816114f81ef736cbd0cf69878062a40660. 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/DEZC62205444.