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 0xdb624b3050e08e4129079a7574ee5ee42e79e5abfeec8ef50808d90f22f1c3c6. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/225ce794-e4eb-44f9-b73a-cfb21e499f8a.json and https://artists.proofprofile.net/proofs/artist/225ce794-e4eb-44f9-b73a-cfb21e499f8a.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 0x7817ec909d039f7f417bdc215a799833c5be1170a36dfe189feb170df393e818. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/UKP3G2005234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88477f077d947241a98c18eccef77592f6f7854e11765dec5691e890e988ba4. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/UKP3G2005245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46a0242727b2488b222dc07ba101b170a607c1cf533836005d68ef7fc9778e8. 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/UKP3G2005221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3566f86b7ea3487beceec58a0a16d3334c8c1a695a98def8a6ffe513884c934. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/UKP3G2005250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf26aecfff1c799e6442a5be972855415075dd796848e1275f020697cff1c4b8. 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/UKP3G2005260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb670c0a26788bfb08dbbdb12db1acb3f6643626edd418ee2194c50e2e239675. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/UKP3G2005258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9134a497913b1ccc219c010e0fec85c79d7fe8d3ea50942243522eb76f256f5a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:35:59Z), 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/UKP3G2005232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6026e87d70b54284395099d1ba7a39dce7383c12fc290dd3f05ec4a94d953fe3. 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/UKP3G2005243.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f7039ac562a86508a9f5ea2e90443a22ac5c8e047cc8f95fbfdea12e467038. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:58:40Z), 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/UKP3G2005249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a38aff070a8fd4e4d39871acd0ec581b7338541e40de8e3e4e592b8443a57ae. 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/UKP3G2005247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02ea2777a033f2f4c168bee30a5c2e87e500f04ab5c6bf1ef4207ca00c7f6d1. 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/UKP3G2005497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99350ac9906948d6e9a72d49aa7eb7dc499946ab2da1acc4fcd523048045851. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/UKP3G2005248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d094f9c1c7e009034835b2a7a8188de67e10f4c4238cffbeb3fc32d2e0984e. 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/UKP3G2008434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19ee2dae3006bca3973571bf45351ba9ec4615ab0015f14d02f0719aaf09dab. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:02:59Z), 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/UKP3G2008968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc082a4bc2123e3a203ce07480d7656d23acb3d44c963f2f61b5ce773c08a73b9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/UKP3G2008972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8c0f4ad5c5d1b4f4ea929c95c9e7347b59d08e2961639f66a76358a04da3c6. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/UKP3G2009272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c362b4d1df069bd45ad69ce4c1f4650da88758a26434100946eafae37d9c782. 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/UKP3G2009271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265b44c8106f880b5efa0834b243dbb9765c36e60cc8dcbf42a678e9cd5e8ff0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:52:43Z), 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/UKP3G2009269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb902e3e4e359aa70503fc64bb8124125bf105e3b28ede1ce08527ca32a8f217. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:50:31Z), 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/UKP3G2009263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751560bb632036a116afc13dd3cf047356616ac3d7fe8c00a3e33103f5faaae8. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/UKP3G2009264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef17e417710da238882e71b72e2f5c19d19d85f9a20fd8ad224834b2d5f8a28. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:11:48Z), 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/UKP3G2009268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6b3f0fbeb328056f15435dc269746b3ba73789348d759d59b4cccf0d238a60. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UKP3G2010539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e20f281fcd8d4e30bc6072f41171b7ae9147892b9679255fd86bdb70c495913. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:28:50Z), 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/UKP3G2010540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372609f91fab203dab9bfe161e34e8800e42643c14ccc48f8e17def08c7afb98. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UKP3G2010541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddfd74236f728e50f0effefc173c58f06c06cc8a34ebbc8a5b066b5f44cf176. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/UKP3G2403264.