thumb|Logo. Broder Daniel (Swedish for Brother Daniel), often abbreviated as BD, was an alternative rock band from Gothenburg, Sweden. They formed in the late 1980s and then consisted of classmates He
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 0x6d69f7e67b60e2badbb4d1cd93826f7448d79ff6bd7531e4116cafc4e6d0b204. 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/2c0bfbd4-c5ea-4251-887f-b334401609ec.json and https://artists.proofprofile.net/proofs/artist/2c0bfbd4-c5ea-4251-887f-b334401609ec.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 0x78cb73b44491bf40130f35938effd5060febfd25d709b6bfb1030e67ca027a45. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SEAMA9536010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5710e4d0fec435df8d382fd44175e6ad874c01334ad0213691c8f6c966b13b1. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/SEAMA9536020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d703124de8e307fae3109a6528ccc966f648f2fe0603f665cc2d86838b36786. 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/SEAMA9536030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1f15feed6753be004be543a9bf7c5d13bf297b0acbb406830890e42299c20e. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/SEAMA9536050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb60f2793d5539bb528cdf1c5aecae64b089a20f136c6dab42120e17330cedc6. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/SEAMA9536110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b0103579444315c43304e0db7fe58cab118f7f3e86041e94cf0001645d5a97. 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/SEAMA9614030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c81a52d14bec9b5996fcaba7b6bde73139dcef3d8951dfb2370bce74d11a274. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SEAMA9614040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d9f8a1dad73f993c5f68ffab7f319861679cd654de0013edad7cd6e3bf4fb4. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/SEAMA9614060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7228cf4e9af87f78e9a989953073c4b91a857570412b5bd8ed06505fe61d6e. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/SEAMA9614070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee1494a3e7c19511146ead3bf0e0ed66bb3b456a107ef789ddace12ca7697a54. 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/SEVBU9804040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffcab46d6e1f10b275a8f24f82053a0c7dca24ceb06970da4d756d3e516f53d. 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/SEVBU9804050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01393295bf038c15cc6da3befec713a8d0ea4828c71ffd3cea78d5ebce7d70eb. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/SEVBU9804080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b11fbdf3fc16a2ef3d56bf59299e293d4f272af35a5cbec0fd48f241bfece47. 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/SEVBU9804090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1aeef9c7f90011ccc61d3aaa3d50b23538f171c2890dd8506f082ce97b56bf7. 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/SEVBU0300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa172f926b3de75e97fd34b326d964ccde515e2d08deb1b53869e5b38ed7a0c52. 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/SEVBU0300107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d4ffe4a6f9697a0ff44e11591ee8fb9fdec49a325ad428681930b524d9914f. 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/SEVBU0300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693331d62fb4693b71817d0bcb63a88b64ae7f3376dbb0e85c30d32c3e515c8c. 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/SEVBU0300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f3d3ca97d6c71b80fca0fdc86d03f7c0c1875cfed0a1de1e7ddcd9ec25b657. 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/SEVBU0300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585cffa6e6d57569f0c67fbe82c0e39493282c9ce215fed63266414e405c251b. 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/SEAMA9625020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315311c2158ea3c6957a3a4a7efde7c742f8d874ba3627f682c872ed741fea97. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SEAMA9625040.