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 0x4906fac85eaeecbb7b682167405c00b4bab1439445d81f3afd37bafeab0d9f27. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d4fb57d-5c86-475f-bc08-572dca6a7dcd.json and https://artists.proofprofile.net/proofs/artist/8d4fb57d-5c86-475f-bc08-572dca6a7dcd.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 0xdc00687b44026e22953e7d95bb163c9d48e08205785dc2b68d5ac3b0ede27ff1. 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/BXJZY2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7652e7bd49f654b9fd49cbd62cae8df32762f28f33a727cfb34255567e3fe4e5. 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/BXJZY2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fd2ae12e484b284cbb46be5e7a0bdbcb21e5f019e3ca2196f533af6b59a930. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BXJZY2100004.
Chill Brazilian Storm: Skate, Surf & Lofi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3ba86f0909a31b99677acf4e9b1991581e8b39ca8ae4112ca652f1e7b923cc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BC1HI2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafa223ce3af366162e4bbf6f9d76f091bf7473a1d2f9d544dc9ce05ce902283. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BX1292300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c12ee2de6b19a36dda17a9fd747b082b2f6884d786c02298196494bf11aced8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USANG2292429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dda2a302162f61db929e2525b528cacd91f916ebc25556d8d3735a0e073d775. 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/BC1GR2300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ee0745f1c79066bb3a80550cb114f721c64b37eef92ed88b5db2a33bb8feea. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCC3T2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dec74c8cba7c91d74dcb004fd1b49a856b88e5c84dd4157796c5d8bea2da58b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCVH92300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a710096f93c69669a6d0c0d8b1e1706dda97f94e7fd28f30762808b8e080443. 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/USANG2291651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4757a192004165ce7929ca379db5c7995a9bb63756105b93520e3b305a5f43dd. 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/BC56W2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07bb64efbbc43f9bb0258bc523550accfb4166bf6307e91ddf5cf301bd86889. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXOP52300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d43e7112452d605943f9006028a293c835f96cf176e3205806ab89bea2b2c35. 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/BCG112300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6db7f81e70a4f17ceb60f88f677bdd3a9f79cb7a18227e2760f22347e7a67a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USANG2292406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97cb16179cd786eea37f4795f5d1ef48b1bee8bf0078173d22876ef42424ac5d. 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/BC2VL2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcac5752327cf5ada5a9aac50941d81f6b6c7ac341697a458a8de5ffa97e190. 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/BXJZY2200001.