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 0xb0c997dc1943ef62d786c2c050fe185f0d8bd606790ba13dc09ee03411568840. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e20aa7d4-f5d3-4a85-8653-612437c8ad9a.json and https://artists.proofprofile.net/proofs/artist/e20aa7d4-f5d3-4a85-8653-612437c8ad9a.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 0x9dc41efcca95bd28af87ebccf71a607676ed769fc955330c979ac6c737e22e68. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNJX2363702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7dee5598d1f87de07c5ff95a8ca9ec9b9addae64ee0ff31ee9b57c37f48f55. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:47:43Z), 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/QZNJX2363703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99921b0e104e3dcf30752e32b43fa44ed4b9b9cd958bea1c8b111f8a90f0806a. 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/QZNJX2363705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f7f0c345b8f3fcde319de92144721ef25166b0ecbb219c4596023a331dda57f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZNJX2363706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96784fadb9effbc5147dc8b22ddc05255772e722191c624cb37d8531ecf02e38. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/QZMER2333751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3ffa79f3e24549f03ef1cc395ee7ab3b6443af850818eb1371c22e9951c1fb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZMER2333753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb6fcda12d6aa6d618dd475a548b3ca242a685027555d1e3cd152b5d0a58751. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:39:20Z), 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/QZMER2333754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6c7c19a0a0769b1dcd24f0c4790b0512a5639cd42b2105645c9b634b09d280. 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/QZMER2333757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188d1f4cffc082abb81b079855eef636feda695253b77ac11d8ed68af599a1b9. 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/QZW9K2328942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d38b58e63dd7a1e2f5bd60ca349cf3f362ccf1af633a4640877ff4c98b894e. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZW9K2328944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eaab552728fc8b58f94dfa38cc00f161b5d3dd505a698de5e6703cc16698431. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZTRX2457102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe20674664ce1faf2b87dbf5f4cbdfae27d2196ce3e2a8c419d8474e83f8cd75. 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/QZTRX2457121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d610d7fa1ccfa0e92eb00180eec5a50d8893dc29c90b6bad4ede475f3c05c2d. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:26:43Z), 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/QZTRX2458467.
Music for Nursery Nights: Baby Sleep Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91026e29e73443bba5057474ae13b6d6de172a0e665ddb04b72d50082aa27f36. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZZ8A2408799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f514d92acd82ade3b686e11a58fd36ef9c25d17224b9695ddffc70d32be6c1. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZZ8A2408820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347b8d67a3a9d3e472fc931d6474174659f53197a5615faa93b23e8c5c360c73. 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/QZZEB2486986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a161694a301bae885698e70ad62d7ee098955aec0efcb606ced61e0af7fbea2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZZEB2486987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade11b701772b1cfb767a7d4b0299b425c70bf111f703176ba8fa1f9d012a60a. 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/QZZEB2486990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d6f6b8790fbd19b9778c14d944204d359d7779b76bb6f6a75850f28f3c7bf8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZZEB2486993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2e34ee659cb8063ac45b0bebdd8cd95afa84981194100928ab3eb887fa4052. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZZEB2486995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0874990d3eb5f024e01c80e4d7b839cf9559a5521b05925733b3bd6a12a7612. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:08:18Z), 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/QZZEB2486997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5b56e2b7eaf0081bc7a059466160a9f48ede406bf088f40818afee605c4bd8. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:57:07Z), 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/QZZEB2487000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6af27de7cee079df0a280fea7cd998b7536f55891a0b63b9b60fbfe903b8764. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZZEB2487002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08d570579432c20a97aabc83cbf04c9ab025fb8bcb197880cc645649cfdc6fb. 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/QZZEB2487005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dabf2fbec53102489b558700dab79af15e33981184be4aac6d846e8746c7bfd. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZZEB2487007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc3d20746df2d7f7dd5e156f4d25ba38e05879ce58d5a1d1b47cea9839bb047. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZZEB2487009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33ff4020120ac583dfa744a6d47107db46c694d28a8c61958d67868a5d50ded. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/GXF9Q2516227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd37c1ad761d3c6bfbedf301aa774f861b105e5aed7878f38f96f4b233461c8a. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/GXF9Q2516229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd4d53629203652e2f238dbb63327b77d049180da2b7871fb71e1817fc789f9. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QZ5FN2521346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447d12a2bf5092483e1dc5417eebcc052968f97b0c0f8f8a158f661edf3f7449. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ5FN2521352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d38a9ae1f3dca359c73703789c9372c29ca42dd3500c94aae84f1229d1e30e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZ5FN2521355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd95850cb169dd9d3ead828d47a9bac26f166dd2e81a1cc18e522ab198687fb. 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/QZ5FN2521357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaccc52a7d741e5d7bfd280660477ffe187cbb49d8a798de25dd5a3d1740e4195. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:48:13Z), 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/QZ5FN2521358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c9dae08546ed59ba062b3ac556f66cd60c7355c1f0a1ab4a7c4321ef6b46ae. 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/QZ5FN2521359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8597ee38eee12dfd28f36ab57760ceabd46c6399c2da6a2d6b42f7a89eed889e. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/QZ5FN2522808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae47df533e6ec9058c68b1c1afe23bdeb190d79b1544374171dc4a3d1b2de82d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZ5FN2522810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bad99ba869d2966743e678e9c43d4669c170f4ff47e2cd448e3cebe135f3521. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZ5FN2522811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec9952dfbee35b16a95bead4e1b4f6cb0c8a47a153c1bb4acce23b4b530179f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ5FN2522813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52428020f4dc85eca5b5ec75907281e69b5ce2d054068324460282bfd7f6093b. 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/QZ5FN2522815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd25d08b8948779d24a4037fb85edae777458012385b34afa55e9edc203a079. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZ5FN2522817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cc448dae8ae25008cb2952782f84f92a14656da1e59eeb9fd03d49ef6c3a76. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GXF972596459.