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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 0x5800b1e83d87b3b7f39afe2b0e8d848c73bde9f0fd7ffb7e899488069651b6ae. 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/2bf30ca3-c963-4c6a-9c1b-6943d0693230.json and https://artists.proofprofile.net/proofs/artist/2bf30ca3-c963-4c6a-9c1b-6943d0693230.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 0xf5d129a128ec015629aebcf316d3b6abe6688072d8d70ef4cabf8a265b447407. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AUMU00400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa33149ecbf3f815d5ea7546e5f72247b259b56c4fa0337418ca3e3b2ec80a3d. 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/AUMU00400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc190fbc4f1e51fb57e298acc52766abb7a2a2f001e15f22fc4ac5cb48408f6a2. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:44:48Z), 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/AUMU00400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502ee318eb157e03cb738051cdef1ef28d2be2db062edcb52e74960601d77254. 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/AUMU00300071.
Don't Look Now but I Think I'm Sweating Blood
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dcd45754f4aa605d1e8c2c31838a3d414a2168f6cbd95c8bd24c5b2004b5ee6. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:03:11Z), 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/AUMU00500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b04fd32b2a5f1c1f205266232e2c49ceea6a931cef54a7ccab4319bfff61b7. 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/AUMU00500084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d479077b00ba577e06e23447544925fdf132d3fde37dfa488805862118138ad. 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/AUMU00500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa57a4faa80d1840bdddaff4a12932a75f9a2eb75c7f4827f79f28aeb5b7a84c0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AUMU00500086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04083e4a29cebda4f94319059f8a1c3f940885f06629c6c2bd39e2c321ffc5fe. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUMU00500087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322bfad03d9d55a1bea9555f45e775ce3bb73cb96c32f93ee48197e8253e1e70. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:19:57Z), 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/AUMU00500088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf0f44a2e16f4900fc6466000b1946a2d808124f467ffa3df1706d3dbba1a76. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/AUMU00500089.
Are You Involved? (15th Anniversary Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438b048e415d054ab1f72c423c984c1cd86e239ca2909f4e90f2c11b7565f3f6. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:01:03Z), 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/AUWA00701230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b378f27634e1207632f52acc5a22ba262c79ade40ef9e3465cc6f08e820270. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/AUWA00701310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55419c2899580ee8681a8b2a00bf12d8ad0c9f4aa4193972a49ae8ef604b3a63. 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/AUWA00701320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b684e9a3ab093642cf5f6951127bd002ee6006c27cde70c8bfa39a8121c50f. 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/AUUM71000238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5687ab043c8556828f7559361c9929ac6e70d62add994d421deb1d20fa65783. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/AUUM71000169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefefe5883fe6dab206fefd231580b3c8cc2c1bfd17c21bdae3a14df1e2765ab3. 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/AUUM71000170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0d640141a2f49d39c7308e6af16cdf991013b7af4dfd41f05a1cafb3120dc4. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/AUUM71000171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e5fd7caaa752aa6366b33507c23b1ead9588463e4ee4f65e9002e8b9e10c32. 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/AUUM71000173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07dd0c9b0b49e84fafb1412158b9f26c66436afd742711b99ed81bdf08cfea32. 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/AUUM71000174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9425b96ace109f4b305996389f22da284296da271c7dd32c455f7fa603522682. 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/AUUM71700716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5c35c16ae01e2d7db307077fcbe681ae28d0c56d4f9c2e17f8aacd53340b89. 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/AUMEV1907836.