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 0xdbd134ea3b99387dc15577d35f422bfdde2e6845168d8b408a83465dc7c3a7f4. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c79a3fa7-bd4b-401b-a9f0-7d03b3d26198.json and https://artists.proofprofile.net/proofs/artist/c79a3fa7-bd4b-401b-a9f0-7d03b3d26198.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ein Hase auf Weltreise (Das Original-Hörspiel zum Kinofilm)
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 0xf1b7c849e09eb91e227427fe94fcf6d1260d270accd2faf474c0f6083c9db7fa. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:56:36Z), 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/DEH822114895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce45b3358fa3b11dc08422e35c0874d419e45c4ef50fcbaba20204d11fd9d6dc. 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/DEH822114896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb3370174fc0d523dc2b11db9e5f6cbceb991614ecebdc1091b7e1e68c188738. 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/DEH822114897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0538c2e516a9006a48b9727eb51d1cb4ca52dd3b9cb8fa84922d858d364525e4. 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/DEH822114898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d2e39d09553c6e0169ee307f5e7965c6da0e3210c1a2a175d5802f20cf284e7. 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/DEH822114899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d5a48cde69d78968e960c5eca9c05aa39f07cab07d416abc7fedd0d3e0a87e. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/DEH822114900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87136c709c2235d7dd7f18da2f22132b18fc479fd072586ea2a2d53fe3924796. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEH822114901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8deaf78b0a1cb36bdf712fae4855c5dd50d095489d25aede80b419acc00273. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/DEH822114902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8643137400e21a4b5649da1a9260f4f7e461825b6a9f210e41fa72b86e52cc0a. 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/DEH822114903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3f9f46eb4693b59f4960fc998c9527878b00da1d0b37f5c58ffb6c7b2b0728. 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/DEH822114904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33859d71abe61da2d6d5dd97ecfa03cff81205a6a875951a0ded783f7e6794a8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEH822114905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455970e98946c92578d0e2f9f865dd641326e0fdc2560d95e2cb06ba1bf8c3e3. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DEH822114906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd02dd133b503c28bb7a7d13b19b9e5102828a2b3d00cb49a6eb9ee541b0b1d. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/DEH822114907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df8eff9cdafc822df5e90536582036354e0e6d01c708d68575069a46f9db875. 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/DEH822114908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa20f9db6e28d2ee3c2ff8e52b011e7cb7c4e617b9e0a7043afcdf18f2a9c0897. 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/DEH822114909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5133f68f3cb557c2f7e0d7d209dd05dacd289e9ba87eb75105dc142bea75074a. 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/DEH822114910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024bd58a3cbf61371d5601147ff2bbba1c4bcb0d2380525428826d2740b185d2. 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/DEH822114911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e52eff2ca93bd4214dcd705da9533180cbe21be3fab30068f20b13e9214042. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DEH822114912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e2eefc84de49dc73f2a15d9b797740c0e826d6ad0c40bbce03603eb3606e7bb. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEH822114913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9468518f0adf5442db2b6c21d7397e597c3073dffd195681f8d712f81f530516. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/DEH822114914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ba6c7378593177328663955e24cf12f9c6b468c89bf485476a2fca10a47d5e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEH822114915.