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 0x8ec700b09a090df7f39fe7cb50fd3d9025034461be3ced3bec9ffaf33665b5d3. 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/1ac321af-7975-46eb-a81f-0fb4f5434bfa.json and https://artists.proofprofile.net/proofs/artist/1ac321af-7975-46eb-a81f-0fb4f5434bfa.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 0x5ba19266e72104f1c326632aee0b528c8bfa27989d0ee2d3364aec76b7f2eb75. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/GBLFP1750392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e8592050318a190cea0966534a50bf9d6324b1f5743349a38caaf88bd8d0577. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBLFP1801450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663146bb81f740e70457d8cebd0f8106f3d9768092df78589b44e62cfa599398. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBLFP1801454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7254001a84d2a18cc3f16699f337c10066c14a82de3e83d7df5cbf6a7c08052f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBLFP1801457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84fe0cf8c12f67de95440f84a119dca21b329f1a141c30ceb83c684b7bb10c1. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GBLFP1814117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f68ecc52d5972b8fcde102fe15e9cba0e596b091caf1bfaf01f1eea7ff7c161. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GBLFP1814140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b4d242386f317cdbdbf32be49a0bc080450f809de7dca4e1e18c2d0fd09463. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBLFP1832713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1532f8acbaa7fc47702ccf2bca82089d60e6e3a30f799109dd57df6c4caf1fc. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBMA21834803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235d5d0a37e8ad1461071978c65c83033036c9acec60ee93f5e36ce833f99dde. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/GBMA21834802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e39a96eb9f675767c1f359791050e4e3309d65b9479232b009073214e5f28c0. 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/GBMA21834801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1946064553cfc86b8c6573723d6c52487f4563a9e00d072bc180aa3af9ba2423. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/GBMA22090732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d8107ac186515e7febef67ae88256edddf8bceacaaba609f3c91277e549c74. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX3Q92166747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d8107ac186515e7febef67ae88256edddf8bceacaaba609f3c91277e549c74. 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/GX3Q92166747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5087297ba00acbba91d0c3dbfd94a659c2a72ee418caf7b016bc0e5507464c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/UKXN22262607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625e6eb74ee263f4091aa2d614e78235fed1e679207203f4a04ed441a183d1a0. 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/GX53U2025286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c67256878d402ca8cb0f32fe323ad6d33f467ee35ae92bf8f0a265cb922e35. 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/UKXN22270693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4153c17dc157c7d521090a937a13214bb06f4e3fd1f639550d3c4a3d150c2e9. 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/GX3Q92312953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29fd2f145cd0dad7140df3182ca719f4807046299dc2eb2f85d68072a425707. 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/UKXN22098460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31ec36409215a5aeaf1e06dcd2885b553861d24f4833a152c4cda2074a6390c. 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/GX3Q92359704.