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 0x8733dd0c000a55b017fc5823d1919886752f303a16a51348e36f604aa7c6cf49. 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/babf7fd3-1364-4f3c-bc96-46f7a1dc7391.json and https://artists.proofprofile.net/proofs/artist/babf7fd3-1364-4f3c-bc96-46f7a1dc7391.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rockabye Collection, Vol. Two (A Treasure of Unique Lullabyes for All Ages)
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 0xe6d8c50ffc97eeb52cf055234315468229d4b7dcc78c1a294f71db70cce16883. 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/USCGH1240138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcbfee9c6eaa487e76d30a2d23485ddb4537c3186c65b59845c8a43c9ba5d478. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:06:51Z), 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/USCGH1240141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x026c2781e22430a9e55677850c1c5ffaa7a69ef40247a470e9b1df78a3f09979. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USCGH1240142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfe1b994c66a597bf4cc8f9658da339566fb3f048762cf9947fcc36d370356c. 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/USCGH1240145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f61e84da267b64990ac92164462d3375f8bc64f3946e8f71e6d02fe25bdf0c6. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:03:27Z), 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/USCGH1240146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35a049abc7e1fe4853c0f6770f5485dce5f80d870a42c79783f08f68fe1a754. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USCGH1240147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ec5db9342ecb778382876bbc859fdbc5b748891b7f176c1115bdf80ca2274e. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USCGH1240148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573cedf6624d048deea88e9bb8c2c2c694b1496f0e1b4b7a4bebd2b9f9ab7fa3. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/USCGH1240149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6844a050e220318addb2336fae7f68149e2ac7186e514252669f68a3f69bc3a5. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USCGH1240150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd7520a3a03addebfe62c63a83fa5f22d2fe49a00b3a7c1128a842dc02f51aca. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:56Z), 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/USCGH1240151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a82c405f9529c1fcf3a201c97e0b5d3e851dcfc06504cd533453e1e6e608ca3. 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/USL4R0757302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b38734f707f8d06d1466194c683d9fb2a9b1b3d23f19bfd2b6d037140eb5cb. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:19:34Z), 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/USL4R0757303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc067e229a205987ed9ed5ba0868cee503832fd69bb8b069ecbabf2385161cd97. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:25:08Z), 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/USL4R0757304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e7ec9dce5f201a59e9d3e3a019cd30e99357abe0232cd22dd78fd55d438bdb. 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/USL4R0757305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a721e51b42d22e99add5c9e721418b86ac0228bfcba4656a945a1659507ca07. 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/USL4R0757306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68441269b38518fe1c8b705a94d2fedd8449a50e6d07bdbc251510cc1b7c9f8f. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/USL4R0757307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dfcec42dde64e67460e49d1c6734ec66fd04c73bb1e9a7ff17cb0f19348750. 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/USL4R0757308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5ad9d763758a0dd6cbf62da557611783875e365f60be315518072377540897. 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/USL4R0757309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401773db08b7c1aa191aaae642cd653b745c9f0ccc841f062e5fc3b513267f98. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USL4R0757310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79ff417ff3dbf79079d55f32eab61034ebedcbdb9ff81d5299eae649f25d930. 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/USL4R0757312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c2f0559d10b87e6b101719216c3f75a68bfcaa00949263728648e1119b66c5. 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/USL4R0757313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89ea0f0c974939ff179662bfdbd81ca4bf14e2364e7776893c0434a8d0ff69a. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USL4R0757314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3080164672e9e6d6f54c1b8f8cd91eb749f4cd43d3fe74f44339c0cdca1388. 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/USL4R0757315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a6523da5fbee76093454a4acec4c92c292fde515702dcb5f3219c7c97ccffd. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/USL4R0757316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62683cb56ea4b69cbda150f7792840dc9f83185d97039e84a59dda28c29fb5e5. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/USL4R0757317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9412c6f04d1503e8e6feb32bb299f6748e133f8ab8c6fdbb240e9ec82349d5f1. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USL4R0757318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa163343736fdb7ab43b379b865bb4764e8ba6b648ee375b24224eb8b91f1785e. 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/USL4R0757319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1228484d54c028e6bc4b2a708057599ffc39cc153eaedf2655d62dbc126b0e. 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/USL4R0757443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a7267e5e7784c4735fd14074ff773baeb2d9848c0ee964722c77d4e9399b19. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USL4R0757444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0e227f3a8309ad29d09a04402c32d837e62290ccbe97ff18a3f68c7a551167. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USL4R0757445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcd8374f91a1faa37a542c9859b50c240ca7b3edf5599f5f64f2f71f898b794a. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USL4R0757446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa500a2cc3bb268dcfc7d7f2f245d011950dd0c0076a46a12ffdfb69124dddc. 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/USL4R0757447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f00f7baef1fabf7f243003e9cdfbd9be4af7a581be2ec5a2a2bc35d5fec27b. 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/USL4R0757448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e36e1608962a86c5227b10c4130e0ada77eadd6653f36b40debd6a5047c2aa. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/USL4R0757449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b48fdb9634eea630cf3955772dce18ce392d0ea19fd65dc690b793d7c83ec9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USL4R0757450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b2c31293809f048e5df126c3cb3cccd6c3b55b7f3cf3e38206ffdd27807386. 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/USL4R0757451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4011a5aa51762496c51ce15915d6c607cf9b58d3a28e55d2618264395f19f6. 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/USL4R0757452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7bcca5916f97c03df1f495e5cf1609d1515bffe8b1c00f3913a4f99cbcbd2e. 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/USL4R0757453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3acefa70c976e1add54470ee2c5cbf7b5f2bdc152f0b2a823f004c54d6dbc8c. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USL4R0757455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcded4b192f8b6227037f536cc7dc4fc1eaa4f1b81ce762e9480bb03a5bab5ca2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USL4R0757456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdeaab586728b878dd9ff1d30db0a50265538ec7e11c2657910a75eba8c39385. 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/USL4R0757457.