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 0x61863b961e99e32d24fd736f33e82010a310e354d234940c726ff85072f0a510. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4762824d-e57e-4ab7-bd61-ed043e0b7838.json and https://artists.proofprofile.net/proofs/artist/4762824d-e57e-4ab7-bd61-ed043e0b7838.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 0x29d959d72e57bd3269b131634318c35c13d91a32589c110c81b7a3a5afe5915f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZK6H2466775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b284cde44c1fadc63203b330d5c6bbf09ae71b094489c37f19505e5942d923d. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:09:20Z), 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/QZK6H2466777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fb85f9d240e98c8e7f2a4608cba19cd4bd42f48fbf0c96ddd6c67ac78bd6eb. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZK6H2466776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf12537365fbcf6b05371ec29a995ed0b1b0883ae2ac699a77f57cdc38cbc5ba. 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/QZK6H2466774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ecf77067328fcf38e6af02310cdf1e678ed69d7611653c8010e2ad69769f28. 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/QZK6G2417115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d5306f6392147551a20287cb76b1cbe6f0d3dad1d292985d868718c4396709. 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/QZK6G2414884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bba1ae7948a914a068110831b01936b2db93673ae5afc315589e6db5cdc1a0. 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/QZK6G2417062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480193b810453f9c908d0c71daef322af5821971f56ee851456a83c236e96650. 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/QZK6G2417053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067ccac370f4af084a0e9b7896344321bbff29408e71f249dddb92d2214d132e. 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/QZK6G2419884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf465ac0f18042c05b832c95d815659f2a763f14d0633945a991ddb2542f8e32a. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZK6G2434244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f353528a321ca7a14310f09234811ecd664f6e75c3fc4ba41e60796faef50f. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZK6G2462784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb41b14da3ee27394388c7ff39ceb3ad671f66d0bfe184cf4e5f2f9f3c74fcf. 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/QZK6G2462789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997b07fd241f50edf107357fee4268a5e7999788e415de3a7306a4b9d93c9658. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZK6G2462793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5586bb3539a0930d12362bf8c173c36eea43d3d0f6f06ac035940e6678518906. 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/QZK6G2462792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a930715afe38240865e62ea53fe422de98d31c9624be66ce37ccea42b7b0e3. 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/QZK6G2462783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb1bc67af6a4c3f66f0a3e16f3df506285fb19eadc34849167ff0560ea1dcd2. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZK6G2462788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427dd40b45106004bc73fcb166cbf7fd418462d6c835322de8ab2c67f515a50d. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T07:58:59Z), 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/QZK6G2462795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaacc4d2aca31ae4262b63467208a4c1c5c8d67d713cf00b68612cbe5bbc0b01. 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/QZK6G2462794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28dd780e138d672fee1b582d395bf40ff25aff3eeb839ae6cc8bb4a7c6ecd89. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZK6G2462786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983444655399328f827fd069bd21205d8fdfdc078cb5294134354372cc5cafe3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZK6G2461699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3ac4bb5148aa0a38405a97cac1cd65cc2c833990bf344c86fa4235f8643a76. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZK6G2470003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbdcd0960156b973cca46c36e20ecfc1b933a1b6377d69111d3ba05dd37e1e88. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZK6G2498208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348ea2ddd6c9df6ec4a9889b562ba5c6c953402efb903eb7366404874d42d052. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZK6G2499635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac0495e13bf8ffb59f3dd8f16137b96d4bfc47fc5cd8eb5585616a6c84d1ff3. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZK6G2470015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a57109c4eb186b1c778f4a1877947301c5c046caa44e1bb296b3235c3c74c6a. 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/QZK6G2469403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704b5ed8ca6caf6726dbbf5d9f53ae3fcaa47634a909edbbbab43f6bff33542d. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZK6G2470007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50384ea58a94e4e85ea6c95edc3f07de68fb4332695766badd472a8008e288c6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:04:42Z), 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/QZK6G2470011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac392430262cffab2eddd3acbe631e1bfea50bad7f793e01ebf5acc077bca8c. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZK6F2402363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b37c527b786a80a84266a4862642e839dd8508c3faec38b3b31665347616bff. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZK6F2402844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a59f850c294e711eb1921704faf96cf39a65e1d31bf7ea4dbc60b9834fc4295. 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/QZK6F2402424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc861e842df25ad7c84f10d00997bde112fde3cd2704db8cdcc32c4898864c87b. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZK6F2402841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04eedaca0744065adcc98217946ad3be9940cf0fc14efd6659f89bd5d8f1cb35. 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/QZK6F2402848.