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 0x47f6c548c53d2807728d3d9293f873137644adc65e80d74fce9e07768e5e067e. 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/8377d605-ca51-43a8-9169-b000d73722e5.json and https://artists.proofprofile.net/proofs/artist/8377d605-ca51-43a8-9169-b000d73722e5.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 0xc917d1f63d5224b9fc5dea266bef99479448a8054ed1f1fc392a490ff8631897. 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/FISBA7800223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc8f905770ebc53401157e8456753288831996c2d3589993dfb9916ebe003b3. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FILKA8300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be66e5a04dec03ffda5f9154f73179cf93b8dcb7124b3c65cd5bfffe4314c2b. 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/FILKA7900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3aed728226ccfaa5e3bf10a0672cfb5227c501a0561e449ae02606766f9bb96. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FILKA8000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cc6d78bd0cb61b759fd70619ccd49775849e5afb1498e5e03ca0dcbbef135f. 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/FILKA8200238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1123413f80f3b32484499b7159b3249c3e4ea6f1aabb2dadc30a810986524326. 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/FISBA7800220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0867157d983119f785680751172e7d31cc4ec667113a4e27860fcf26320baf8. 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/FISBA7800222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc917d1f63d5224b9fc5dea266bef99479448a8054ed1f1fc392a490ff8631897. 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/FISBA7800223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3dbdd040b5eb9deb0db9a0d8825aedfeea6e6a7ef13cff75a3d827c62b69029. 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/FILKA8100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167b830fbd987b31dc5a44d40a35032378eeea06c8e1d60f1d1ea19eb3027df4. 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/FILKA8000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94569231e9125c44cf3972be08aa28fe13b9b24591e4a51bdf722549c06a8ad. 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/FILKA8100225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2e8e4d90d21bdc837071cc7a0d3241e1f4fbf8726383046f909a3a80790f1c. 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/FILKA8000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d87bbfb988d8de7afa02191288831973255cc6fe8022e42c9d637f82162c9c. 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/FILKA8000232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd594ac9d3ca893ba69380abfbeb3b4a2359822c5db29e81068b1375189ed2010. 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/FILKA8200350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81043c98685bb0b0bb938b629261653a7bde39fb28c255e14f2b0db66d2feb3. 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/FILKA8200354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4e56fa482767e1e3af4046618e26ccc0f36585346d0bc70d08129dde4540a22. 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/FILKA8300200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc67f8d7995ec7ada738719be222bf93808370e67a00f394613ba086ee5de05. 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/FITTS1100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3df6fdf32522c5a528d32767cb3e7fe45a187e3b404a1aa9ebdcd788201703. 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/FITTS1100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15e3fbaf7e24435aa299bb6c273da213320be4e0e8c09e3a11f8a81b107c7ca. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FITTS1100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ac4eb0c26c0ea34c1c03fa796d91c79c6af57ee04ff80b9b9ae0a3ef330006. 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/FILKA8000240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee457c2d3ec2ad08bcee0acbdbc38be4987be7db27d6cfbc5fcc27e7ebd90960. 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/FISBA7800221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167b830fbd987b31dc5a44d40a35032378eeea06c8e1d60f1d1ea19eb3027df4. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/FILKA8000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23dd504e0d20209867b72421168acc8af25e8adff81808f31c9b9f30b7abfef. 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/FILKA8200349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453973e9bbb5560a36074e696c9bb70d86c8ca8c0c6f2b1eedf974d0b4ba093e. 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/FILKA8300255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66757e79d2d19182f160ba9edebdda6b7647a39d6e094159bebdfea889ae4239. 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/FIUM71201425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f3464e5b3fcaef32eecbec687d63589db11cd721ea42c6cf70bb865d3add387. 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/FIUM71201427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c23db5e4b13da022f1e9d4eb02f4cd9069f065a6c006b58abb74c524b39201. 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/FIUM71201428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e255f797f1953d94e519760503778671166884e19ff88f26d52aadcd2984daa. 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/FIUM71201429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92eeb0ce900dec7286bea171b0984a14693f35d3d2920e24e0ab6d8f919ecc81. 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/FIUM71201430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b581056f4292f68995f74636983cde1e5e154794b5e92698eae8fce61800699. 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/FIUM71201432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee05d72a9c3fe19f80f4c4fc346797b99697441440f1d74ff12db74f6bc83112. 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/FIUM71203204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5948d8acff458673d198bccb077093472a7569551c6446df0eb06b3eb839c5d9. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/FIUM71203205.