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 0x4552ddcdc3e53369d08421a88016d9d38c9b0388a01c3b0232953304c11d645e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b9e8c96-60af-47fd-9280-c28d78a17599.json and https://artists.proofprofile.net/proofs/artist/6b9e8c96-60af-47fd-9280-c28d78a17599.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 0xbd11a2f143e40a8be6363287799264a6706acaae1cad491ffe0505c71b95794f. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBTEG1000153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4124d79f65469c06bcf214c51b83b42ab2ff3c3e303fd5a1a0451ea2e73a8c84. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBTEG1000154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda551510d56b23b552671a8928be6cc22af87a64b63a4483761ef7a91b2aeb64. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:32:57Z), 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/GBTEG1000155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5880f8343a937034b9f4c69dffe2b4fe73f0269d81990c7a186f8f7b21b5116. 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/GBTEG1000152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe7d3284629bd158cb789c2dd8247632e541310443792fdfd7615798e07c305. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBTEG1000147.
Spiral Born Black Into the Upwards Night
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe4e142ff49bbbc9d58b79da44bfd633eada6ce090aea04630ea2ba4e537903. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/GBTEG1000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9801523556cd319520462164a9d2d4efa8501ce6fdbdf6832e58352aefa8bf2e. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USEZ61500091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3eac98a3e5207d463466598a9ec15632701acabdadee9f3a35641319ae3fe0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USEZ61500092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9938376df73c33121b2fbfd0c064f24d8702bc61dc22ee6b5b4295f0f02f8d47. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USEZ61500093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc484d78f2c6c43057195d41661b68e04ed8985e2957e00038dff549ad1dd885. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USEZ61500094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4474eba0a10a5d60a6a49d7f53096f356d4cb588c5428d7b72e1979bf2761397. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/USEZ61500096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dfe66c46deec1b3626936ed72d37aa720eb1f08dc8baa25b57bcb3c86ff0bc5. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USEZ61500097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ab453a111c9d0fbb0603714c7129776deaa04eae86cfab0da5a23b87febccf. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QMPKX1791349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8710c9985a55dda67a86f19cd5ed6fb4c03d0e72b9c318088e3211996b29b65. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/QMPKX1791350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01e6e1d50059a48c14c771e3e4f7990dc59d170e6448f7d3e13572ba414589a6. 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/QMPKX1791351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0671e25d2a0bdce0d0aa5dffd73abc2400d5e274cbbcd370fb06740b6b0b9fc. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GBLFP2581613.