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 0x3315958e7571197914befe7d843efe1e6efc44fa06948ec55e4ccb28cdcabd68. 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/b057e1f4-9a29-4b6a-a427-1a2e9256aafe.json and https://artists.proofprofile.net/proofs/artist/b057e1f4-9a29-4b6a-a427-1a2e9256aafe.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 0x445e03b65a117fc84a8ee6762648ae469364e9a20a47e3070d5f850490aad47e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:26:16Z), 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/QM6MZ1507776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c65f076c160014d3576cd9e9e4c45cd4c2699a7507e01a684ca22bc34936a7. 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/FR9W12019229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91507888b8794a666464d32f70e6a3809e18a66f7ac6e8bba60d73c0ba3908e8. 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/FR9W12019232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20c2aa458cfaeb7cf9a2f33502695a8435c591b43a7532228ba9bc248eed01f5. 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/FR9W12019228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1cb260400bbc5d9708af4d50db81dac6678404d8fd1d2503c2226164a8fead. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9W12019233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91507888b8794a666464d32f70e6a3809e18a66f7ac6e8bba60d73c0ba3908e8. 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/FR9W12019232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e93572d38dc54ae3ce38d09b9cbb718d898b582c8a065e484bcf3e88532a464. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/FRPHR2500090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f6da4d6d5025f85722d533b3feaa37be6a9a3465299103ee415b55d52e295f. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR92U1800330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b3f4b5277a35ae87f7c3f8bfdf290c72d8352c682df244206ff5e194d75820. 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/FR92U1800320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0a4599aafe2d21d63c36d6fb3b6eade76e45781fff36818b23f72508eaac79. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR92U1800360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517f6f7aad6f3e4c0d9612437541639329eff53853addf46f51666c9ac3b3957. 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/FR92U1800410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0a4599aafe2d21d63c36d6fb3b6eade76e45781fff36818b23f72508eaac79. 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/FR92U1800360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edfbdd331e0f9e5b4d2d02f709fa85322b813577866221c516d49d7b1c508dc. 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/FR9W12334643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f27354a8c0eac80af3dd12a026a5675f2afc7538103d84dc93b588e49cc24e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USGC62001120.
Colombian Soul Compiled by Bagar AKA Tricky D
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c0c19ae2d95f1abca63272bc4f52684c48dc9a975299b10a54f2aa8e334d55. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBEQT1900030.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch