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 0x3e791eb1869536cfad4c9a1ec113b058320a9634a3f52450eaef5977bed59cf3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8081f78a-f2c9-4642-ac6d-1d7b8c90e073.json and https://artists.proofprofile.net/proofs/artist/8081f78a-f2c9-4642-ac6d-1d7b8c90e073.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 0x5bb13932498f0ee6ab6952fb4e322651d481047a83f18122afb6e177746eb202. 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/QZGLM2275098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb7b7673452922c97f8eda65562f2191082ac98a418416b6c224075075120d3. 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/QZHZ62273559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1294b28029e3f822d5da6636b895b812cf32266a2f2d7083bca847f16897bd4. 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/QZGLS2390922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcca3541f2d573a8d05ca9a390d92c78bc98d6ca462db2f133e5b8fa8d8b05d8. 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/QZNJZ2395160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0c0f114ef40e520cfcb928a7f6c8740716a9787f86e4814a1b114cf0afb002. 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/QZNJZ2395161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4535095eee8882e9bb07f720ead4beda639fda79c9fcd33714019e637f028365. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:43:38Z), 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/QZNJZ2395169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd870aa1542360d883a029ffde75d57e46a665bc52b85d02bb40e053ef4fe6fc6. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZNJW2403584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d33af9dbce1b5ef3f28ba1d6dafae15fbc9d681403e8652bd69fed5f4b8bae. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZW9K2431362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd83b5b33a95d49a725f315a934ad726a99240b11a20f8d03dee5103d9a26287f. 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/BCX712500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905ab3123799520ff831c6cbaf0ac064bdf70c997fe865ec89dceb30499decba. 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/BCX712500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dcf07dfb7d148e77dd949ffa26b80ca961075ec70b3b93a5d5efbc907e14a23. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:09:16Z), 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/BKAKS2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b02ad4261ca7dc6c6e1bb6f61333bd9991ccd8d4128b0b5df5a474690b10de. 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/BKAKS2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3944c3e1c79d07ad8d5670ba6cb6c7c2e2239ccb7b6bb3c5c3b01fabb2d17d. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/BKAKS2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46473e1e4d63533f64a8b8edf78610b5a5689f970837db169c17277a39a11eb. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/BKAKS2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216737df2122dc8755bffa9c00bd4d574c5041bbf049cd0c8fdddc7835a11acc. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:09:11Z), 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/BKAKS2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f272de870fbf31966e65fb4b7c6304f22bbdc620ff046af81405c6b06f0d94. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZGLM2546000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5afaee6012d34383d6eb120b179475af99bffd3d09a63e8bf8fb9ef9c2d437c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:39:40Z), 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/QZGLM2546002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c87ee0ba9b0266995f375d6657955ff6ee5a476b0f03fad3b608b1a3c909913. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/FRX282584627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a2e9a13cfaccc62685d5e0313b9673db4c5ce8c49623509f95926b50c4383e. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:48:23Z), 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/BCX712500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d42bc19b97dbaf0921579bed793fcf068c5922caf561456f4dfe26647729e4. 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/FRX282584628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7760d5311bb39109f22deb4b035a81f0c40a7fd8602af792f1f81c63c1451d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:20:14Z), 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/FRX282584629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e054df2dc69f27fe70474baeb5957df102a14f280ca8908cf47546aafdf4d4. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/FRX282584630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02b9724589c74fed79755865a091ff075aa351ae0f210579262ca290c3fb535. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX282584633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fdbe514c582720a178cc0ea4312a7f7c3e98746a276242e374119f3bb6b7a91. 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/FRX282584634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff9ec5136cb7a86586c68d660dd0de360002c28b916e761e14644616f334d3a6. 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/BCX712500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8d8664060c6af8c1047bc918e37a313f9146795a5cafd8644430ce75868278. 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/FRX282584635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ecb79094d8e079f30f8cb3a2d61f93b94eae85fb08aba77a7e9969ebaa379e. 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/FRX282584636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51b63b75e70cd8ecea8ce524902cdb7592b9e8151e963eb397cd1ddfe100953. 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/FRX282584637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ec16acaf6e1b9b2fdd79f889dbed8598f426a3d671d84c227a1386060af1bb. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FRX282584638.