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 0x8dab95382c4e2b55b0216f10f59b8c841f59033596d2cebc646cbf6b532f6a8c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ecae9c4-cbd0-46c8-8f05-22767166501a.json and https://artists.proofprofile.net/proofs/artist/5ecae9c4-cbd0-46c8-8f05-22767166501a.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 0x96f5a278ce766c932adce7d674dcec0ab4ced58fe4e38f6e02631e010fd3d2a0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM3DF2209018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d34bab1f41ffb1f9043736e73b406a653648ba9b6fa3b8872cc885c18ac74a0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZDQH2390409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6182c113166d115624cd2ec4315524897eacddb6814eadb14cf089636b1e5380. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US3DF2241307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc6827e8bc742a15b7a3b63a06c6eb1b6dbe34aafb59a5ee5701c82d6ca0b1c1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZVR82300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebab2fc4a696a864ace095a2b641d288f637885b7a61a44e2dc6151f8a1334fc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZVR82300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1386e0d46dd6f6c88db7ac5562213e728285faf2a431499a4a9d70523f9895cd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZVR82300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df6f2d111cf806162ec3175cd76eceea7fcf95bd2e1e64f978622d835e635e1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZVR82300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x080cec029a37dfcc75c8656cf767492af615800a5e9144f42279a3b7cde1c78d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZVR82300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91aca31384c3e30ad1fe91b7828eb8035d1a326378d0848d5b7c635ff6d49ecc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZVR82300038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33235b0500fd9acc5d569ff08f8f6c8acebd90a3fae69ff736f06b88313729f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZVR82200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2476510cdf27cdf5a1d0582a267f2f5957ce9d4fd94a5c9f329a26da4c79229. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZVR82200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c53c37c58938485fb74eff9cf3dad4bf1436a14da76d79d2e613a12ecd70b3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USDXS2012233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa917b5d148cf40d39bb26f4ad9ae6cccd86fab4fa13f7d683ba219a1c779c0e7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USDXS2012234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x689b4899bc73651a03b71d0538d0fdf68b83a509836b048251f31b176825bb4b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USDXS2012235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf8531c481e87c1b8230f979851c5cd82c36cdde152806b441f4ce266a57b2e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MX2831802297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2511829127a8aaee6a7d43a050cd74c9caf33cf82152983faac3907c37095fa5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2439687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56818085d8976cca5ee4dc332963553ca58e64764646d4b11a2e1d5310fcb7fc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USA2P2424298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3864be9637696e57e315f2dc9b27a0c97093044916562daede5aae0642a6685c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2421381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd87e5378bd9c3fc2cc4f20fc643702a84400486ce8fd0d204501c511ebd4d6f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GXBAV2390492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40d61848ea94d03a021bd7813fae8c61eb409b1a1822f59dade658d1b783c341. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZVR82300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe843ed390d23066309740b44f930a39f7c42fda4f6dd150567f5f6e8cefc12f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZTB52305529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0655071f6a9e244bf25ba43ea2888a0019a56e7d6d36a2629c3710ae4cc8c16. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZVR82300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0996a99dd0835d2d754ac62ea10a47ab24007a8827279bc38c80586181815d8e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZVR13230005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f8627b3532c4d310ea8f6c9038c1b110a8957549fb880ea78c505863fe6620. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZVR82200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c91bc234e108a3574b2a8c50bc05ab3aecc40a1eb907b1e7bc3996d7cdf21cd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZVR82200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a40c13e2a16ff0c624bd52f0453707dfcb1190d2e4d89de4515e177ee83b65f. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZVR82200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3768b805d26d4f91a9bd04ac0060bc8f37714dff8c341ab2d283949acff12fda. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZVR82200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b2e655b48ab874f97d8fb1d6e544ae5e103d5b9ffec1f0574d4e81dbd8d8b4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZUZ42200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9085c76eef6ef73c46f9fbec02c5b2b449bade782b1ebb1646d8ede8901362df. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUYG1423741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ba57b10b87bb32c38018f45f46160df25deb39768281e1e5160cf945ac66d0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHZ32228169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6052771468f8d0041da311338c31254b19fc35b405f8c59df248c87cfb44b2e2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLS2248069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1243e9efc7b0eb98e2075e9f52528eec89c07f0d0e3c4cad12be696f5899f1c1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGLS2271663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6d819e5f8563067e15566cb45ae69824d9fde99eceac48e732a2e91e01fc4f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US7VG2241135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9085c76eef6ef73c46f9fbec02c5b2b449bade782b1ebb1646d8ede8901362df. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUYG1423741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6182c113166d115624cd2ec4315524897eacddb6814eadb14cf089636b1e5380. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US3DF2241307.