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 0xfcf883c97a1b459571e1da95f45bba7f07d51a03c94979b6571bfd6c2a989f44. 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/8c1b8b75-3dc0-45ae-94b0-9c290534db92.json and https://artists.proofprofile.net/proofs/artist/8c1b8b75-3dc0-45ae-94b0-9c290534db92.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 0xcc48b3a991f4d87282553432268d0be2d613fd77786624602de7ebd7b31b00ab. 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/ARQIW2416821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0accd5d0433fec1b4fa41dae8d28443b5f0bf595e2683ac1a75adfcd86adece. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZVEM2559367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acd9051269875bcb0e79122598d56f27a1f5f95e459b166072d9e69146fee06. 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/QZVEM2559368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9871c8277cf41f6b6d7f337ca22725ef17431cd92d2813ae7caf00755dbe1034. 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/GBMA22535302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1056bce2a493c7f5bb34b0c0dfd6ff92d44ca4bf1134ce7cb99d4211aece86. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GBMA22535303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcc12a9c964a71ba4bf7a9e76300847c902698e06b5e3cb6b3dc8570239f959. 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/GBMA22535304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bd61ced876557deb25e0154964804fbcb9fb0ac8bb474d35e0baf99fe8b883. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GBMA22535305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ece1e3d609cc91b0175eab466c123d943e9892bb7face4c9de3ed50218eef0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBMA22535306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb761d4e36c76df3d3d1f17089b28e74bb11ab2397b911525b5992f5121e9c94f. 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/GBMA22535308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba6b974098f8dc445155a5660aa0d14755e428a5e2de8e15d1f611a63f4827e. 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/GBMA22535309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8726ba5da68c21d1dfabb25a65b1f19e794665c841200d4ca39cee32c171d0d1. 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/GBMA22535310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fdb232a83bfcefaa2da23d63671447537290098b251a4cfc7509330ec4253c4. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZRP52503127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecd52dee350224193ab33125844b02dac8e9fad0c7a590c0aa730fd022fff6d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZRP52503129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3365a7333594cb529100d412ead3b42b9e91d025198f15469589ba01f09e5383. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/SEYOK2512283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0051fae3f81350007f29cf0aef3b7a01224f84c721179686f1b832ba0b377895. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/SEYOK2512284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a2f24b5d2b092be40185ae6b104bdcf3a869773efaefb0af8fb0732b735b59. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/SEYOK2512285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232ef8c48246488efee30c939e84c82876d9c2784520925811d52cf033db930e. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/SEYOK2512286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7c7b86e2c510be38913294233b6e4091aba9dfb3ced088b7a6682c6589ccdf. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/SEYOK2512287.