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 0x4ce8fb44a9695468c5a33e495e360088461bcf1ddf900cee4775bdb2e3bad89b. 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/aa6ee25c-3f2c-4b2b-9d69-c20f0fe791f0.json and https://artists.proofprofile.net/proofs/artist/aa6ee25c-3f2c-4b2b-9d69-c20f0fe791f0.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 0x5cd91ff2d41c85df88b475bc1614d1bf6b992b2f527c9ad35309a4f2db4b3506. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCACI1599598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1e64917ab12055fbfd23fb53c90b5ca533194f2f2fd2ac3479d67f338c7e71. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCACW1749721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85a795e0b65cba8f69cc945be50abf071f865c37d43930cdca57755a91f0f56. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TCACY1787169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a6c88ba86f980d4e9068c73e293ce78ee876c766496c1afefa56769bb0ad30. 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/TCACZ1775995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bd585ad7d7b64002b41eb7ba224fc02f2890efa8872dc7972e07294238d291. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/TCADL1836486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c54d5905c7b4be897f630b5fadd6c02f038850a5e46092a0d26d2c52d11775. 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/TCADM1839862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c940a46e1c2af5b30a8a3aba4abbe1d0b3f92ec72458d87bfd2e893f721ce14. 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/TCAEA1963777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb7ee9dcbb4ac18ebe6266b5ae543ca44622bbc4647f7e1fec6967039d6a2e7. 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/TCAEN1958656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789d25fffc13c4ab3862530a8d531355e4174fe55d77958b9a8d4445c199772b. 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/QZES82007894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bf7276bad1786b3656cac35129513bc86dddda3a6ef14c747e4f0b469644fe. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:52:12Z), 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/QZES92006173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad95c968c3b10b95ff65ca35481d8a9d67201ecb75ab8413f4fe3a8d4f67cf64. 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/QZHNA2043832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1700f46c52a8bc4c75502008c9ee68d8665f3a99f924829a491bffde1cc86fb8. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZHNB2096444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1140fadd6bc13effb75356bc0da8c246da8b13f8aae22fe6acd0c82e74006bf1. 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/QZK6N2032160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a43ba1d6c2b70f0882484250d87e8196c49ceb372083b11d95069446b352a94. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZK6F2088370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692aad6d45b344334686e464a22f44cd9bfcacbb93c6e1a0e9319fe4bc48893c. 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/QZDA72139127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab49e0a128bc4739d50f2753cd9e51b7e3c7dfa6a508b0df310e2c998083443. 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/QZHN72175857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55a521f1666a3b1e80a18443431ff98171f340e272f4680b753414c6c43c9e6. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T22:45:25Z), 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/QZK6H2171281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34878403fa6fc5513acad16677b5bef327b5f097b8d4224fc9e281831f6619ac. 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/QZPLS2134553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98a74f45d5f3d196e5106be39b68f899ea237050c05d37e831d0a0b9fdc836d. 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/QZDA42255529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b3352a7efbb2200c97c4f0cc89bf0a2c041c58311f4837abd5eac99f491ffa. 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/QZDA72267138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5303ee3605710226a59fbecc283e5201b68a967ffe64e33ef63eedf301ddd33. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6M2233237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26badcb17d4f0ac482c4ffe14b7fb8237f8d6ca4e7787b9c6668d9cbfa5b2465. 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/QZMEM2205893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f19478296b8f60d3ac63e4b8a74832939e9e4ba1df5351cbe4c7122f5f6b30. 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/QZNWY2240153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fae10bc814659545d8f5e0574a60b48c4feb85ca9b96f8014ca937a89aa197. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZPLR2293258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a6f1ec81cc86e33ed9eb6a6e6d18c1e7998bae5111c879829081bce307baa7. 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/QZFZ72315687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9413f661bf2daaa619c63828b52e4301aecee7d2907a82767bcd4376def01a. 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/QZK6H2302054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c03beb212392e745ad9f4307a64ec87ee98f7c0f7d37137e84fdb955d6eb950. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:26:49Z), 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/QZRP42325085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cfc303af57cd4a1040e3a3db2f9a5a96def72363b9cefe1a76c8c50bcb4f50e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAHN2317787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec6c2270ef7335196f51151a1454f25b963471c287681ec6f906fe1fe7ba4b3. 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/TCAHX2439794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207def6e7451979091d657d52482442a674693a9c11c4404cdefda767563cdb0. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/TCAIA2445123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bdab1af7a3ccbf16b25784bcf8af1d90457b03748095b286b8c6389debf735. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:22:37Z), 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/TCAIG2462948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353c3ea3d610cf0d37076cf04eabb38e3410fb6321505d139e81b65f426bdb4a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAIP2400849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f8070a25b96e39d891ebe5768a804328f22a0cccfd06b06f23cdc4d073e5a2. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:33:29Z), 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/TCAIY2417775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f205e881d5ef7fab8ae99d407b2ce8a14e83487c5728f33e7b9ab4a87994fe. 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/QZZ792494731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59f7d2fbe2bbac20351bb92d6d8dea32710d965fb0a9a2cf47f9724e98cbd82. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:06:24Z), 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/QZZ7P2470739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6608ef1a1f53f5f81401e3e774d36342d028a7aaaded23488c0428e066fcd4d0. 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/QZZ7U2443541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe469169fe40bfb33b0dcfc6776d7a681af36e10cea17efa6e94487b860944e3. 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/QZDA82590954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d73ef87d40a3d66088a365af2a44e6cdc0cbad6d4589d60a50ef1299239e31. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZDA82590955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x016249547b0ace3949b0511b55952f6876ab3fe91f02a7ec343f8eba41fa0792. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:54:55Z), 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/QZDA82590956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d774542f98070e9018f1983dfe88f8e4ff9be060f33ac1020dc6640c96bed39. 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/QZZ762565732.