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 0xfe18e702271d9016d1498be6314f5bf94531612e76f74b80867d970e75cac9e4. 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/644f4ee6-1e94-493e-872d-39a77ba1b978.json and https://artists.proofprofile.net/proofs/artist/644f4ee6-1e94-493e-872d-39a77ba1b978.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 0xc9da0c2ac81645e5e8c9b44f72b4d813af1e2d8b7f8da390a8c9cb33f4c7775a. 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/QM4TW1911497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23076e3ecf5b2df28ceda225c8bd478738efc19b186b56baf911fdd82307d4d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QM4TW1911498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5537dd3daf6873d129beb94094f299503218c7553eb8d2e548faf4dd3dd6d83. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QM4TW1911500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22b80224b45f2692eec78e200318ce4c477d777a6ffe2d6152839aa820b8d39. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T17:35:15Z), 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/QM4TW1911501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be97236e24d16cc1c3bddd655755267677b83c14f6ff0db60403773cdc387e2. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QM4TW1911503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86a0c1a836b93d750406c6b184646d4a728f35089fb89cd18af0e599c8129d8. 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/QM4TW1911504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0252b9b238e4e074d781a95a88bd209fdfdff72971167a4c14f5756bac131ffb. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:05:16Z), 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/QM4TW1911506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64d15690ea58982639c65668aee79cff650ddf1ba5d1e862bbd0e1ef996527cd. 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/QM4TW1911507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b09c314ca87572b338b2b46485a677d8641f6d2fb4c2279b8ad9b59721c535d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM4TW1911510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa9b6cfd93a311f4cd912fee4ecd5fc4cedac8a1d665186c7582f4caf6d057b. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:45:18Z), 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/QM4TW1911511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c828c97f9bdc5096d45db58da8a3dd5c0d015c604862217e3366e56353cb94. 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/QM4TW1911539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c945ef894a86ef41b5f355c03282c571db4972b00b04835d71729dc99e7e69f. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:40:39Z), 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/QM4TW1911540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56e169a08c5133d5e8b5fc6c82e9ef9debb701948d0dec9c771af74ebda6e2f3. 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/QM4TW1911541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb975816dc73ada021d46e6eeacd7becdae0d98c5512b62a60db7410222fbf91f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM4TW1911542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0586e01bee8acb785740476916f7c2c25f1762250f5ce794f1c55e778a39ab5c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM4TW1911543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f045d5c31a5de9b18981cfbbe98e7b93b144db2ec35ec860b28dc2ed7035cee. 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/QM4TW1911544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf790e5371d05cf94ae7a0bfd3be1d635d54c5982c11a88c5b7829b545f1657e. 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/QM4TW1911545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ee5056b0a3f357fd23ef9eca598b0298699f0650dc311ede61f3012136777d. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QM4TW1911546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4974264f7c9970b0a4db883da3ced2299d96d71179bb4af1295ceccbe1890ede. 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/QMBZ91901778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c3b9d5ae6234572564caeb463397a480bbe1dad92445c66cb21132e77ff8e5. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QMBZ91901776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a26400612bae9e266d9484daf673d85690026a6a1c1b0bfe35a003dc94cdcf2. 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/QMBZ91901779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ccdc461f535841b5be12cb64f457db26b5e96f01d8d05d49c1239beb5dad59. 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/GRSTY2202211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773dda661c4362b7004c0c15caf07fc9c78ca07e935fed12c3bf49493ca40ef6. 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/GRSTY2202212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee31c349134a10af526a37599cb6dfb17ed04617e81348fa9b5352c10478172e. 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/GRSTY2202213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad3e3f5deae34c9d50d587100993c92193e9b020416ec72ec5b7084ae32c03f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:29:27Z), 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/GRSTY2202214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40d36da29a13abc9b6fd0b1f6dbfbba813cbca16142ed183002ab57947594a0. 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/GRSTY2202215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x251a4a0915ec40a4f319fbb126560380b9875eface52fc5eaff6631ee5afb6ce. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/GRSTY2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf280fa9836eeed920cbfb46aa4a521f9d0e4ba22b5da36440c1bbe933d421572. 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/QZRP52331438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b0ddc8ae4c1b67c157962b0676c8e0b81fd02be5c6f398d8179a247381aab3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/GRSTY2400278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d9021f78b8fda79b1d485218bf9b7fe1955167d2be5bb6837bb33d50ad076f. 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/GRSTY2400279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54fd0ab60ba48faf46d849a525d5c68ef84c70dd34278967ec5f1fe40872e0d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USQY51334133.