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 0x9eb0d85774a268b92dfbd6a43ba2797a32fe55b8fe5c25e64d1b4c3db3e148fb. Chain 2 (Bitcoin): anchored in block 953928 (2026-06-16T10:21:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1d7035ce-a586-4eec-bc17-d1cb56a0009b.json and https://artists.proofprofile.net/proofs/artist/1d7035ce-a586-4eec-bc17-d1cb56a0009b.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 0x388359b9e4d392a62fc79f399e9240c2dd38f6b7809ec7702f5e5f082cde6a68. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEZN82510117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41f92d354ad22f7f536645e875d184a18bcfa6ac549e048506160de2adb069f. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:53:13Z), 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/DEZN82510139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f62aa213afb2650941b1bb394b39520f82c58ead8da8bec39f34bbb30bb1e1. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:55Z), 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/DEZN82510126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a854bf39d40d5efe610666d383349eea24f0a997aa189eee2a98f6163bead2e. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:04:09Z), 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/DEZN82510093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f422f204fa695d3bb229f4c57b3e9613853081c26e6bc3ef572ec54495fdf3. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:50:54Z), 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/DEZN82510128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf916fce442cb097329d30b10c742d36630ee9b52aced2de4521fff4ea270122e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/DEZN82510124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef47a8a72957ee19b45b6a1f9a0864b93d2c4ab8e38a5fe9c710003c1b1c0c0. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:00:39Z), 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/DEZN82510092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973f61f649aada9fe907512565c512972e10d9b54b3148e5aa7c7e5525eaf9f3. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/DEZN82510121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a7cc1d7098886d4970a2592913dcd4c0cf3ea3cbd9bf905f8cf5936a2c4446. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:06:48Z), 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/DEZN82510119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1167b406385e3626462ac5813f7c72e4193443b6db8586ecac4254b0efac2ebe. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEZN82510127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82caaaf098dc5d6438966ec09a50ccee273b0233df0afd5c5bca7f4fbeb60cd9. 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/DEZN82510089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb6ac053d765fcfec591d18dd8c53de57ec734113e1a7ee6451850e88bc4247. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:43:08Z), 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/DEZN82510118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe795ec33c21e0b76d54d64d836f7758af3c5b90a5b26878290c57eb97d88b6ed. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DEZN82510090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed7b6273695e98ccc8462ebe4fe0e48f3912faf1296346c2fef51c00017c95e. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/DEZN82510125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615c9406331cca9cf5e15c25fb1a6f77ffb12298f5797e7a8c2ea98570635bef. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEZN82510123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4081c3b54e1461c0b640a56de0ff4bf466cf6f5a6c03cb2a4e9e85f47c6812fc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DEZN82510136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650a1e8d8e643440476bb672e1f6ed1dbd00f66b2df88600404a60f73ce1db8b. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:48:48Z), 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/DEZN82510132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d62ca254453343e7076c718eb28b362b7051aca8bf721a9fb9f73374f1a144. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEZN82510134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8e9ce4e17a044b80f639681eb99ee7a9e8da3ff2e7d63568e1e2170d0db055. 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/DEZN82510094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe32cb40b51ab3a6050ce2cdda10430ac9f9ceaa751827b2177a61077a974306. 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/DEZN82510131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc722885dc3740fa8a1bbaa1c17dab3eda30b84efabb16102ccdbf8510cfd4780. 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/DEZN82510091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1587f5f3df500c326a8682358dafbfae2dfccf2db55aab8879ff39a27063f6d0. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DEZN82510138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50899b8bbd91538c90a1c6b2407153bf683916c63e9d43a889a67ef16624f300. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEZN82510122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1997b55261fafee2cf5f49ca7f2660a5a07afd8ec13487fc7246f66917d8c5b2. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DEZN82510133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af1887939a99a18e25c47f2d85bbe1208754c8be000fa8723ffd4af7c26d422. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DEZN82510120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e868efd031949b2c25f0c0ecaff5d712a493ab39f1f75b1dd65f625f740cdf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEZN82510116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ca1eb8f57a8a19c76ee31766d67c4cfb81fd3711a8a72624254e2b65e27ada. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DEZN82510130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1b0a64b2981943f42e7d28ba96b5479ac40a68146d3e1e5e7f400c1aa2af43. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEZN82510265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f1cd94b30f662836181f590258afc0803571dcdaa0778f60291f104a062840. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEZN82510272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6ee7aa556df3ad886de50bf127a46b5d42f2f7505bffb839e7d56f18383c20. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEZN82510278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd490c422ce2f8cda06b882485e93f042930e99cbce0e81a7baa9bf6b813b31e. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:06:43Z), 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/DEZN82510303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044782679ff182df50cf250d7123085cae715142312f678d00f456050d14c32b. 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/DEZN82510266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c762582ccf6f0c18a3c57fca7c00e41c04c53d4a3ab3e1b2b4d8a8e32b7802. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:41:19Z), 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/DEZN82510268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7e5aca1e97cf7e644aafdfca921d79ba47d28bde3612e16800c8c5bc0a69b6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEZN82510271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1f5c42c2fbd66a4346b6c36b14b03c10f53ae3dd0bd26417ca20af38f5cbfb. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DEZN82510264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64478b8e60164ee6709454383ed297a82d146f845743134d69a2f15c00fac47. 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/DEZN82510275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9393e9d71056a5a92b1a5e32b315ed51c9ec0bb305bd13d25d9310ea3d4df8. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEZN82510301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44eee1897c7d7f8f21dd91e8b3f90c7c4f90ddabd07a14c47f900c0df8edabf. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/DEZN82510269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800ba23c2f7961bb2e22a07b3091df36a9dd20403dffcb8c244ec36c9c446940. 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/DEZN82510277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22172ebcbf6671cf1d2944ffe0c6c86b400b60af3c1801e858fe65e49d6e5ec7. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEZN82510267.