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 0xd4911eafd8f409f9845a188a6bd51666025e46019ec372bdac0faee072229a64. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/06603123-b6bb-4f84-bef7-b1158a518d3d.json and https://artists.proofprofile.net/proofs/artist/06603123-b6bb-4f84-bef7-b1158a518d3d.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 0x2c4308ba9cb85360cf5f797ba50ef740e61e476fb1538c89fff2f1f8dabe9a35. 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/DGA082377141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9347b900db22b49790d37b8b89fcfa62dca74887ce5534d47efd03a213748993. 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/FR10S2432754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4726de9c810c5793954aa212e573a1e6820f75dcadaebb94d2a3a8256a49385. 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/FR10S2478472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8758fcd8b9013713cca4da658a916ca7d6fcf278e5dcbd3508f95b7f6c2ad2. 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/FR96X2434324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155cf4854c259d6e30446da2f51d7ff2fa59f8f407151bdc176167245d0c5e2b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR59R2498756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef914d7a332822b20a3e934fb9bd7f11995d3e8413b2ab8525bb00429ef89fd0. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/FR59R2498757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7669a389463cce89b941a425d9b47535600bff7f9168931c4c3bb4c4185d9c. Chain 2 (Bitcoin): anchored in block 958495 (2026-07-18T04:39:02Z), 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/FRX282492206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b344dd2a2c2f4697e998b26d0102355593c1449859db1f8efeceb2b742f719. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/DGA052435632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaeae77faee8fd0d42b6c50c7cb971a7a71dd380f934c9f8caf9d7bc6d69c703. 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/DGA082476914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e001fa3cafce031ec7f4b64c85bfc2ffa9b2ae687266d5e4e210cb63192235e. 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/DGA082476915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c08b7a409b0e14f0961ed69a490313ef0e8d44fd54493f947124202c480b84b. 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/DGA0L2413781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05de537f3cb3385a7e9e3689e54f35e3d86ce2bfa0f6089fa231391b4f366374. 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/DGA0L2413782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8beec74559b8a640c27def03521c8bd797f507a67cfa4a62364a6ab84eab375d. 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/DGA0L2453730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12adf09fc5b42cc6e3b4c69607c4c9b9576352f3561ad501bd8b605aae185ab2. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/DGA0L2453731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2410ab7d05519be09741fbdde9e70cfdc0bbba0009913f87b1b27ba0ab42bae. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/DGA0P2436249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bc9093ff2445a6655efcff4aabdab8c15b5a8a92fe36739473956402ffbbd3. 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/DGA0P2436250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ac367de4ea78874c9a49f851ce6190557b94da48872306d4e7c2f26a7264f7. 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/DGA0Q2428858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb156086604afe6874c2a147565edef8612db4e7e5f45e669978d4925323a6f1b. 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/DGA0Q2491925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c34eeec1b1c5e561488f708873a882acd64cc2904bfc2906d2de5eee347f501. 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/DGA0Q2491926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56775f691a02af31eaae29f2e317fb5901dd5dfaaa036c71bf2598efc59ac9bf. 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/DGA0Q2491927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40e05dd38337f9b115aa77f3db482ed5474bf7366bbb42ee5e32d77a5a62e0c. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/DGA0T2422578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa105db2309b325026aedd86f4d81ce868fa640e6085116cd4bb4c0983621497. 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/FR10S2575493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbee90314ed0752dc5eff4849c744f131cd29a4aaab688bfd4f36b6a4602792a. 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/FR10S2581324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621b0c32251c83fd34d3f11e1b9fd6c169729d05eabb5dbc16bcdc3f7ac2a3e6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/FR10S2581325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee89049d08438ae2c37c974741fb534f833e2b1e63aca7ca252d9b565a8c547. 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/FR2X42580902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2484ce31a0a288b6bc4f280547b172cca48b9f2df5511f186b2f61d1cf8e03b8. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:16:31Z), 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/FR2X42580903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb159e0f742672e327b4fe55979f162e6985c6ff78f55f7bcc2323de0c34644. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/FR59R2501494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66951b34fcaf3a5b0940b0bffbd86f45ae15551ea239b7362f93d1f6d30e2bb3. 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/FR59R2501495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dcfa5e5e7c26a6e9b2e44d36596b40ee62ff676dbbe368c24c83b67465aef6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR2X42582207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x781e32e14d800776fa61244d7e9aa1b492094bbed92f5cf33183691e3a04fb42. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:56:54Z), 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/FRX452529913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x674b61d69abe39b03d97601b6e08ad214d14e47bd627e34933f2ab44ff833ec8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRX452537196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f0f98ab4b20a73f8e032a0e49b9e86029f72e98ea8d962b0951065f7b8415d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:00:45Z), 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/FRX452537197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f26091daa25802b6083b0cc0e5b130094b45079a8087006c069898bbf6f6da. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FRX762579419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8d1263f5352c6c55e73c33da3e7c56d38566abf5fc90bc07b3305de506e9d3. 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/FRX762579420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686d00cef0405a615baa4db0e94d6c69071ca20b1789e69fd5362ef23286f9c0. 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/FRX762579421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23f7bdaa868679061817e2f428504f58f8efc644e6dd01d06fe8a23f77d9186. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA052541762.