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 0xe4c29ea99ca147bc845bb99c9b3cd6fb5c65fd3914968f30f11421fc870779d9. 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/a5a3382a-b1fd-4c57-a279-794f1d1b9102.json and https://artists.proofprofile.net/proofs/artist/a5a3382a-b1fd-4c57-a279-794f1d1b9102.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 0x72c66bdb92611eb7e7711915b8157b887b30494088ec57b7b51432329c58ecca. 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/FR96X1818467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c289187d2691f2a653a8462b5b47be9dc43f5ec220ed750f2100e1b67ad50c6. 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/FR96X1818471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c20602ef5230c152a8a1f32cf79a9a3468f1acbc59e0e224febac36d0fd118. 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/FR96X1818468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d572088eabbea30338839cfda352c0b6a4b7aaa58c773b3df6866ebdac760da. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:41:30Z), 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/FR96X1818469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x761125583e3b16ef63d0e21d79ac0133db5d87eada7fe5bbd5e536e2e986130b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/SMRUS0058981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f0084b11db7b76756d97da43034acf00b9df4b081d814739effba750d737e00. 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/SMRUS0059400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7788e346c8c4ca752625a16802590959fdc68105432d7972835761a60ec4c4f2. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:39:41Z), 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/SMRUS0059764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa037d03be4346911d3654ae8161b804ef87a6690a9cf924208355985cd598141. 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/SMRUS0060119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5335ec9a2ffa35dbfc4b7d716fdb273ab5438919ef08b1994dfc7bed237f241. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:43Z), 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/SMRUS0061486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d7465665be6db812db80d55121147cbdf04e8a33483e774fe6ad1d2c78e6a0. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/SMRUS0062445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd804cfcf4d436d3a02ac99bcb202d564c3973d60e04ff3e3834149831b2e38. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:28:17Z), 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/SMRUS0062739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b9a0016ad317869229ee0a4f2987d1e026d7c7271b1c162d94d5dcd2a2df92. 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/SMRUS0064900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8834349d150ed056a258114621bf5d635a3b3f3b7430a3fe4b137da012095e. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:42Z), 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/SMRUS0065328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946547cdaafe765c8e4415e90165c1757d7816464226dab9c2d4898b70b6d31d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SMRUS0067018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a63fe87f60bac1ada99c098f322487789679c82fdd2eef743b34a87a83a463a. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/SMRUS0067691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd50e7aa048222e4de9e6618175ac46326b13b3ae25ba6793797ebc1dd42ef68e. 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/SMRUS0067856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f6b09f7d81f2b3367a885e4348fc9f2968b2394ae49e231027ebee9526c4bd. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/SMRUS0068271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3022bd56891b7c75a8575712721c62ca167302d9572f880066087065be7dbf48. 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/SMRUS0068558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef96bcd8755301869c9fb2a1281f2bddde9baf7e18a0a5329a773254628d4e1. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SMRUS0068886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x199c910bb1ee0e88298448ebd029236726d35b13165e51a10d6fab618625629c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/SMRUS0069393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f636bfca9b18a48a99b114a0077217824ec2782dffd35b7a3129f06665eaa4e. 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/SMRUS0069565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b874c7a9d534def103f3d933091171fcb46cce759cf6be64a4ba40098987b9. 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/SMRUS0073560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508a4eb40031b78e47762332dae75211ef6d881228b98eb792b14c2b2f1ab806. 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/SMRUS0074905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7a6f71df3792459d686f28fe7cba1da3e3a2a6f24819e3717dc6b1b02b2b08. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/SMRUS0075096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8ae1d6b488bfdcaee7a71c128351f24e6fb7b704573abfddccfe159d052416. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/SMRUS0076760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b32e7ca08aef5e765cf80506b285b7741061f8b535720d8d663bd91afe5f16. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:19:14Z), 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/RUB732059276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561453d3c93db32d2fbef82c77588dd88e9c48c94548470494395326ddd7bb14. 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/RUAH62406701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c1e2dd9f738938e138a3913815b14a8ff18934c30cce06d69c840a53562efa. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/RUA1D2587511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86762fcfaa943a71f18fe65f59ff987ccfe0054b3b2dc455f44cb249ab57df7. 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/RUAGT2595456.