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 0xb6c9a1b0879f5112d4c2090ab29ae026b67d0a5f40fe6db11df6b6f84789532a. 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/82567962-7935-4eca-845c-d03c74dc95e8.json and https://artists.proofprofile.net/proofs/artist/82567962-7935-4eca-845c-d03c74dc95e8.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 0x388d5587d55758c0558e2533b4fa1988f1e0c244f5c7ec0bce71622912e1c63f. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:23:43Z), 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/TCAFO2103072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0597c521f32da6cb3384b04e1642407101c42e3653d8a9e4c97574bea414aa. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAFO2103075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c719a1ea40c458d6c6f2695b5b13443c0c2933096d0892cfbdf5e42f37806e1. 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/TCAFO2103080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e99b2f009f6e3e12ffa4658966b52bc2f3890e04746a15a19d9f94a656efb33. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAFO2103084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x876a87bddb8544182e0f09f0ef24a2ff93fdca82f16bb144d83e8f437e5b7e03. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/TCAFO2103086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea61c997c4c0a2b54b82b4fdeb0dcfba821ce0a22a275b04700cabf4b317a850. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAFX2194600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42384b94cd124f7109c64aad1143356bf2550fbd8aaf0381702ad692969dddec. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:05:26Z), 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/TCAFZ2100567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2523c509e36f6340a934771db3e2a5ca6a32b1dd129ac6bceeb74e4b0d7155a6. 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/TCAGG2217288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74484b0d33f090c5653a3f301a373bf9f4faace535ba4673e95f05eb2a73d49b. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/TCAGI2235043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1dca63e1d5c6b3926e1e8586ea79756c62fe262b0fbd004750405e2160f9b0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:06:11Z), 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/TCAGN2245115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1dca63e1d5c6b3926e1e8586ea79756c62fe262b0fbd004750405e2160f9b0. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/TCAGN2245115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169c70dc5341ae48909d39ace8f97657909ca646bb0fc7c39d4a4c33d210f502. 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/TCAGR2212251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38754cc758cf1d2a86d956de82e673a73a40614eac11589097b88b7553415403. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAGU2353418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d3ec755e14b9819908d3c4c8c147ef7e52fd727ef28f4c5b054fe40079f9ed. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCAHB2366962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142296575d8eb845edcf7fa3f8b820ac1c4bb091d334940429ddd918379ff593. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAHG2306223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3284726309ca70d56db2e523ced9a9fcbc182b372adeffa7850a6312524eb3d. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:07:04Z), 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/TCAHQ2383069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a56a6091d1ef84bad120efc6d56216ad5aee0d8f9430f879adc1d815c3c315. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USA2P2354448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9642e3c8307ed9c634072d7464422a2d1dad24b707ff2538a4c07959b3b976. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCAHQ2383166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17adafa25f9fc129cdcab72aeae1c346ae7d8af0b3e8d109692c10fa76c24c04. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:16:22Z), 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/TCAHQ2383157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f05253fe6e31f5de6857e9e0af257115c5f640aa5a610b6ea21eaf17134a2e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAGZ2376157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8f022b18857550bf14b70e3dc2138b336e414d9176e926598c035aba671e2d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:06:34Z), 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/TCAHW2463050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225a28e9fe5c4f3d215a71cb7e404df8a72ebb983887995ebcb16e9582b8ba9f. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/TCAII2440058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec84ef4c9b59792801a7f1a3966c6d9278f5a011c7426e173f94230e36627261. 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/QZNJV2516377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e78a8ffc6ffaef0c5c51138c0750c279de69172425060c64f622f3867d441c. 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/QMFMG2512621.