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 0x0136fee509fd4c707286ea51a4d4f275ab327472872811c6128a07ec6d1afd66. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/616629de-dbb7-4447-909a-47c093c6da98.json and https://artists.proofprofile.net/proofs/artist/616629de-dbb7-4447-909a-47c093c6da98.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 0x51531584ca2b775b677975fe9276790abf271a8a47ad5da9e724693b0d6b8aca. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZGLS2333074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10806d3ab08bcbdbd59b32cd00b92a9ae84aa4fbaeed597e650d9bc4fc056878. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES47E2001469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe09405a56b3fd32700d7a51462af28538e2290f1b8e7d505cf237817c520c30f. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6MZ2438558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5417a6e2f1482027e8261cdcfdfca6425bc5e664631a1c3d13c954b936ee53. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM6MZ2438583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba7a00853c9ae9ad40728b4b2237c3dc3234f111a2b543e53380035b079a879f. 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/QM6MZ2438590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91946d3e6bd81a2862067a2bec5348d94092742c3235c513e1c3142a3ca4202a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QM6MZ2438598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b12f183a2b1a626ca60433a43015bc31a84279bdc6bc5c6980a901b2c6490c7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM6MZ2438747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815559bb22b6dc22cee2103aa03c04e05cb33a38c76d4cf9a4cfae5c3d60be93. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM6MZ2438757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4002fa857b5e222ff18787c23d54bef03fa2aeb60a0e219634be7b728bf2138a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM6MZ2438764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed05142d6df051c6a86f234fee9cc38b9f8130f2d46b81fa9e7ad7aed36687f5. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QM6MZ2438793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd148a37870bb5b9b02665f7e017b2e6d839b4243ddda29fcbdcf8fe39917d44a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QM6MZ2438810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf3e44969f400aca9ce4b461ad14030600e431c7382fa406c3e879fb5026a8a. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QM6MZ2438788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c590d10439967c89697a06bf58c18ee33d281b615010195d5d32e0004e0edb2. 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/QZNJX2368427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc447dccec32ef9425db136c299de93ea1230dec1dd945f44b4eaa43b2f08c2a1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZHZ32118150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc9a9e748f57ca5a91bcf97e563143556ff5c3457678d28cfb8316a40d66c75. 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/QZMZ92471786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26a839cc08624aba5f1284624c41e0a8c7c2ea4501d79a6d99b1efcba8e1378. 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/ES47E2003684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10806d3ab08bcbdbd59b32cd00b92a9ae84aa4fbaeed597e650d9bc4fc056878. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ES47E2001469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8add781472832ac533cc47c08eed0316ab9d7caa0d39d25c25ed19947e07d41. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ESA011977468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5b81a33aefd8fae32d5a319adc3f4dee81f2fbc2afb46e0ecd7835fa2071cb. 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/QZNJW2479859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d48778c0129c39ce938425bfc2a79d3f4620b06fe1c0368603561ba954e24c7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZW9K2330651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47a5cdecb1cf3318190d9847ae0d03d20a0e6c5dcf521a683a2217b1efe083e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ES75E2305166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed4b438bdb7f067fa9ce788090f682fdfefd2667869a9412cec21215243a746. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES75E2303277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92020833d68c9356a62477ab947b8eb35e81d7880c4a87fa5c335d54fcb77d59. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES75E2302147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e94970b458a708dcc8268b5db2feabd8037850f46247647b079a27d53ec1484. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES75E2206787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600693b440d10190421d263677e3d135da1949f9e534b0fb8db937de71a65a87. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ES75E2205238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757faa65b954b37580f97931d1e2f969901087ecf1b1abc0d5caa44062142390. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES75E2202018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8028ac527b9d2d376db2034a7788cef36267b8158f514c3591c744549b8bb6b4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ES75E2101194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f87345b7af0d900e4180abd1f2f706984ab409b64b81a2235cf8d26af3bbf7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ES47E2005766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5acf074ff15da70be7d13986ebae1a2ba95b262800c1336b71c1798dabb7f12. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZK6K2393467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddcc9b334c9c887121a11b1d0e163990ebe016cc03d44681611a33dc4d6688a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZW9M2263068.