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 0x6a7db8d252c9525ffc024afea644bc6f2b4fe0c3ab983715badba9211fb714d1. 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/b8f2cae2-1d68-4fd5-9279-40ec0ac1e776.json and https://artists.proofprofile.net/proofs/artist/b8f2cae2-1d68-4fd5-9279-40ec0ac1e776.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 0xab74fbe87ef2b219a482d2e98c73dd7891cb904a36b929d689d479ddba989549. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/BRAPI9900493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc681c8e7827b1a059471ede40a86fefa5e2b8c1587c2b4968a8e80aca2cfedaf. 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/BRAPI9900494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d374268737bbd04c4c9a1ee6637bfa064c5bd80ebf7e28b00c6a88249858003. 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/BRAPI9900502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc4d2d375813c252065f47e75dfc458a38c0d083c254e9960bd221c52516014. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/BRAMD0100211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb921da056bab46743e13f2f7dda3485c3cfa6c12fde93fd5d596143c6d5bebc. 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/BRAMD0100212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbfbdca3f06d157ff0eb7010c0eb4f63ac65f2295c5a558f27535c27b30d520. 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/BRAMD0100215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d047f983637161a8a2f758d9656d97b681bc7b6743c6328d23281f19947c660. 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/BRAMD0100216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3081d8f5ca9ee7087d184793630146d2e86db804fbedaa81de2568b11060455d. 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/BRAMD0100217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd4c879cba50eb1fb3dee2f570c12d9a2eeb8a76ffe746472b9ac9a698314a3. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/BRAMD0100224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162f0665a6bfe30bbef64526399383c8f8b95a923d5aeb4e40e085256946a6fd. 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/BRAMD0200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6676e97509f3dcabb3e7bdfe5b1d0af3ce78ad7313d4a61713ab9b884426648f. 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/BRAMD0200109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b9d31553bee667faeb051217c0cfb57303ecd35a12677d84de1c16c2d9e467. 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/BRAMD0200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5511da1f97bc7d6fc82459d06c820ae10ae43fb10923af9917406b234c51fd27. 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/BRAPI0700696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8209bbaaf938aed92c2beba632342c1851548f0fe5d97ce075db25ec2adbea. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/BRAPI0700698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96e748a197d88b240879878568d49c02a363621ddbb4d51da8054bf1f6c774e. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BRAPI0700699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c90375a14789328a687832583c940471668861eb4cebbefb8ff6d624400eb95. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BRAPI0700700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edd9a892bf21d402ec249805a28c427abb68bcc39dc5fa37b74e14959cf585d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:05:21Z), 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/BRAPI0700701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198795a467c1d5963a411c697d5a1b2a9c65e58ba5203fb9685edd5977aaa24c. 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/BRAPI0700702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8988215e36a78f0fd684e12e619838af65bb8cd813845dd978200180a686a36. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:33:26Z), 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/BRAPI0700704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdc1fb9914af27697add88463d555c68939145888edae198588adf0f132f14c. Chain 2 (Bitcoin): anchored in block 957826 (2026-07-13T08:56:09Z), 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/BRAPI0700705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6932a385fd357650c366f9b3adff752b3e7f051e893cf5a479c3a241b03a66cb. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BRAPI0700706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5743c8885f4b36e93e5adea02eb42d71f16f48b3f69548f245733c7711e1037. 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/BRAPI0700697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda67aedd0e55f6623f7ef9631fa512d2b05e9f982d6c535115b818e4d5cbfed. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/BRAPI0401747.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68ca96ea09bf70707aad50123c896fa1284cca09b5e8d712b656889836d2e73. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/BRAPI0401753.