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 0x06a14b0276c38375feb2b111c3d4697886f7f909339d443591b3d3d443b7ebed. 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/f21afc48-c380-477c-b1bb-185b324ab752.json and https://artists.proofprofile.net/proofs/artist/f21afc48-c380-477c-b1bb-185b324ab752.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 0x14ecbcbed000e9712c2c757d6482e24e8111484acfeb7d333d602c1319b38d4a. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZHN41994694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2a7ece0edb54a6833688a7d4155ce700321f3aadff12073e9a38fd49985dd3. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:32:37Z), 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/QZHN41994695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e06bbe9e69f5d96bb555022da2ad9ed7041fa95a4edc7f872409bfefb61f096. 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/QZDA72084477.
Divine Sweater Presents: The Ten Year Plan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e06bbe9e69f5d96bb555022da2ad9ed7041fa95a4edc7f872409bfefb61f096. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZDA72084477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba4aa754fa645a0fa9a3cd99dd8251a1de20e2d4b4a75b6a027cafc831eac6f. 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/QZES82074052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2214a2e40171c92fc3ad5750849dacf11604c14f47b04349f75702427a56201. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZK6M2011250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0013bdd249c02fc93acd52e57d352dc5dc8b63c41fca9d546f8199b765ea14ff. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:32:48Z), 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/QZDA62173011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faf7494a5f195ec54aa5712413672d9bd3f464d78470f65615912c60f2482d6. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZDA62173016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdd4c164b7f5be355b404c4d4ae77e973751953caab0803237a8f3d8bf27c4a. 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/QMFME2231123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e929a9e2f371bd8b251161bb7229d433dd4c3d1bed930af8975244f552732e3. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:17:52Z), 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/QM4TW2333006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb025cd4c1ec893777ac3a257582fb688d33755e9af678bb6733b9f710486c84a. 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/QM4TW2365780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7179087a7476a0388f259dcd761a0fe2c24bc0a19778f811379a9f9d022d744a. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QM4TW2378437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e26a14fef4ab5ca379c48413fa6b2586ec26eee11b34b78b442e14bdf346c5. 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/QM4TW2378441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe286ea510f249fea440439a72ce03254b7dc5b9b97e9a355fd0ffa0d37c7d309. 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/QM4TW2378497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7179087a7476a0388f259dcd761a0fe2c24bc0a19778f811379a9f9d022d744a. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:05:05Z), 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/QM4TW2378437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe286ea510f249fea440439a72ce03254b7dc5b9b97e9a355fd0ffa0d37c7d309. 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/QM4TW2378497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8eef828d55a85dc9f6d9fafaf584de6c802540e23ea080c8b795bc565aac1b. 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/QM4TW2421578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18a2986c988aafd6e82517b28d43c02291ffb5bfdb8e1e4c2a92261f347431a. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QM4TW2421581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb18a2986c988aafd6e82517b28d43c02291ffb5bfdb8e1e4c2a92261f347431a. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:43:24Z), 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/QM4TW2421581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5dcbb335b600655d1b5b87d2cd786ae2f7d354e01859cc7834f2a4ced3abf6. 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/QM4TW2421588.