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 0x3bb05d72d92e06c809fc6e71adef764ab59bf149ab8f1426644f4c49a348e96c. 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/b8e46907-3923-410b-81be-432815ccf0ed.json and https://artists.proofprofile.net/proofs/artist/b8e46907-3923-410b-81be-432815ccf0ed.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 0x5c8f7064426f903c13ea38f3697728414ead9af58e0a5df0f316b711b9767681. 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/USERN1000602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328c67fbe82a062289ac189c6a57296c4cd603eb29c9ab562da6b5c9f9ae423f. 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/USERN1000603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cd31ca134aa091cf0557a289157a5436acd8818aa065d93f309e81c2be316b. 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/USERN1000604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdd8435cc9e411fdb8c013469091fc9af0d029bb52f5bf544d2e1e32253a1c4. 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/USERN1000605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c1eb9a9e52c68f2cadd9d4a95bab5075b43cf10ad94b093a3c7d2fb286bb05. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USERN1000606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x409ac1e6c80189450263e836afe07efff8bba234316ad9e86b56c966e16984c8. 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/USERN1000607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a83b4a722772ceee0b859639bf1f2ea3eeb1d1f665fb3410b50cc8a152408e. 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/USERN1000608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1740f9a3e6226da614b9a43742eb866444c097daa7eaa963cb64baa7093692e1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USERN1000609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde61b62995e26c4b66994aea14fbc404a470705a8ec830173293361f2321f6f0. 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/USERN1000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a7087ca45f51970d8f650ddbd261c721e9ccaeeec9a6e86e2ecd94811a811f. 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/USERN1000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8caf4b1fb611c9e1dc96b678941fdfe97795579045ca08ed5f204c8fda6b9b7e. 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/USERN1000103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c4c9bd06b6dfe71848a8733debff107a1b2fd000b95bca245bde94747ae4e7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USERN1000104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0de4514f47cec4d4054ba99d1596bbd9607ff8ca76666daee19f6d7970d47d. 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/USERN1000105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b1526ed86fba46f606d497e3c5994be565c8de6a6cb5d12c6438018255d37c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USERN1000106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c48ed88cd0c4bad07d76ca04164af3841bc55dda7c01fa79c24f35f3ee588a. 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/USERN1000107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56099ac2eb0bef332aabbc7e69a73153da3c9eab630c310bf97306fca4ca51b9. 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/USERN1000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90f7aa5a14ab6351b2ef88754546c24064a4bfca3d412995096a9af3683b7a9. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USERN1000108.
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 0x2837566f029199661021e6d884b91b607ef8c10a80a16a2b9c80ec5674f0f31c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USERN1000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b0c3ddc69645a4d19f5390e9e6b8cd8e9c7a2d3b132271e0e65064b626e558. 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/USERN1007900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f8414ddc410ebdc57c962b11157783cffcabc95824eb4696350da45e84acd7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USERN1007901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5c740f79e6de440f14133826e864ae3f489b78eb9dcf5a79e60d8b1320bd21. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USERN1007902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e58c32775e7ee3590463d949e72d644df6a47b33d53c43904507720c5356b45. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USERN1007903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2cf45210b7d0092411ba8a2085a717737011316edfe1de29257a2fd580497f. 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/USERN1007904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2624da9e385c8101fd410f80a5024b0e040f0fefd4b45fb76778ed18f5a4e208. 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/USERN1007905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca3de0788f9614d8f1b1b37ee85e13e7bc9d815c8d04fb61cd073bc8a9d7a41. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USERN1007906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab060d8a39d2e882917377b0e6f77b9244eb0a201c3fd4e603e4461ad33fc95c. 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/USERN1007907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc4b4ff59a8bdb9d795d6a97b08aa98b78dfebd33c2ebd38d96452926fb7c45. 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/USERN1007908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3989190a7f5bb2b6260988cbacaf3de033f9a2e2a743ff5f031339ffc176cd6f. 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/USERN1007891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b32c9ffb58f314635c6a46ad407c0af0a5df867640de22324df1effc691b670. 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/USERN1007892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38598c9741f132bbeaa9c859f2fc82a77fc8f0f3b2812dfea210f9b9db094a07. 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/USERN1007893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9153bed7f2c762fe3a52244820401b0904739275a8bcf042ea05ba48ee99ca0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USERN1007894.
Indulging Dismemberment of a Mutilating Breed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693313db4326cc5f27673e5f005c2088f4490b4d337917110518d46de9b49631. 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/USERN1007895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2bb3c38bf8c6ad2b0a0d554873372bb9f3726fbf4a3a31ca97202b257aa609. 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/USERN1007896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f35b40a901704f7e8c1446cf8e898928f8805eea55685d5d8254ab460c4a96. 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/USERN1007897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30c65d4dac243e9acd7e9733bebd34f61a58e2e0238edc0e13ff8cb060b3390. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USERN1007898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417e48fa4aa12d26ecf58f20b2ba8a4f09c32dbbc7027e0c574b1b7de4e79930. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USERN1007899.