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 0xccb26cc0cb68c66978e19c4d7a7323de69c5dd3d3231f2b52a91cb4eb599e49a. 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/308bb728-7187-44dd-9390-938b2da9e335.json and https://artists.proofprofile.net/proofs/artist/308bb728-7187-44dd-9390-938b2da9e335.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 0xba19b14060904609f68ccfb8297cd2c5c9374f0bdc4419cb25ebcee68eed3658. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T06:30:01Z), 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/FRUM71702066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f117e3c851fe8f5178feb750cfe7b56c95cfea7ef2bfb60d78c6809a7484462. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:02:48Z), 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/FRUM71800255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3af450322a6aea37378c04f35845eb384ff42397d9df46acd8f8a183adb8456. 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/FRUM71800262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8093a9bb7f737fe11db95a236413de847ef930044012b79aa1d1410262698b. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/FRUM71800264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa540c6afa996024ea2d0fd29645870e9a2561fdc40443294db0646eb05b8e1f6. 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/FRUM71800265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0beea002bc0a9f5518ccaf38fd2faba4db3a209b8a3a8bde75c4dcddede95cc2. 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/FRUM71800268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd048f01541202b956d4946a8f9b4b9394a9acc9d8605d8d696477f1956c73b. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FRUM71900088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931b433d6b68b97e43bba744f1619f042507799a6b54e625ae8cc9a88abbc608. 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/FRUM71900550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ab3d74e03e44ca53771d5810ae7b6b015e5e0a968ba86a61ef39a157fe01ef. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRUM71900687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490fd6dd2ec28fa0e7bc421a7beb7f0a47cac5038a898309da460dcf87a695d7. 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/FRUM71900674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adf240860cff82301b201f322d966fe7ae9bac4bb71325d021c3f57e52c6ca9. 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/FRUM71901654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4774f6f8256837735cded85bd88b8e85cdb89073f8cf139238ef3e89e09c72. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FRUM71901548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c93641a7e9723f46c68cad24961a05b9f76e4a166c074f79a0db98e3e24b660. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FRUM71901788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ab3d74e03e44ca53771d5810ae7b6b015e5e0a968ba86a61ef39a157fe01ef. 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/FRUM71900687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x864cb2837293918a86d2f63bccc7427661f0fecdab3da819ae204d6b6bc5cbc9. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:58:57Z), 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/FRUM72102311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda60bed981be892b97ef72916e4c7b8d9faa4a04b1ab365a9fca35bbf8ec1297. 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/FRUM72100892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc1773449a7763008f428ee61ed17951a858545a09e9135495e623bcda91ce0. 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/FRUM72100887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf54c28a4512b5d86daa12ba5a3682d75439ba81535e04e15d79d229f8ceedd4. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/FRUM72100889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc414c5943a1f2970f2e0a8169061ca30d4007f2100c6f9dad2d6c5fedf732374. 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/FRUM72100890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700beb7dfa8ebca08e3aa8b73c5607d327fbdc77ae61ec62d5a8cee7f2797947. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/FRUM72100894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabbdba97bb6b59d6204cfa482cb6f7864a507c794cb59c1dff855ec23f874e2a. 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/FRUM72100897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bbde040d70cc6ff7924bf93a1701ddd8af298623857f69415c080d8253534fe. 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/FR8FB2301730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a22da8133dcb1fcb3fa25572fc01a8ee5e9ce3eb7906f02a8735aeb0b606c6c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:50:38Z), 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/FR8FB2301740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x899d01ed926c2c27269cf0614fe4201df2739df4874dd03832b37f1063388146. 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/FR8FB2301700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf838dbdd525fbfcd4c62105c2984b29177c0c357c9a481e36cf7410156a29769. 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/FR8FB2301750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdab3c990c2555eb9a62930ce6cc4ce87f7be3404cba2dbc157f282848932b06. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR8FB2301800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71c766462b40d2f638c3ecba2d42cc166c889f43eb0f4676ae55de62e209655. 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/FR8FB2325010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f3811ade135f2bb55aa70d3cd857b9fd506698b789f44fd2b2032a551b4056. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W12419459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490fd6dd2ec28fa0e7bc421a7beb7f0a47cac5038a898309da460dcf87a695d7. 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/FRUM71900674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b96f895683f7968ca5ae11ec752328bb527143411bc46b0a38baecd0b34437d. 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/FR2X41818867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2cff4ed7442fe6503028ceb514f7f6be5201b4297b4fb5f24d01b12cb632c2. 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/FRX762125238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64cd2d267001ddf6e8d13baca8e1d24362d813bbba63a86c90284ab98fd78dac. 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/FRX762125240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311196dfce8a49a05603dced8c980cd918498b7e61a70f01d48d127aeb642f5d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/FR91X1901300.