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 0xcea18935aef84db8db0cbfdee4f6ac48f60bfe78450e002d4a767941b0647438. 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/08a76443-cde9-404a-956c-382ca34b73a8.json and https://artists.proofprofile.net/proofs/artist/08a76443-cde9-404a-956c-382ca34b73a8.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 0x69f9031d8a29d422bb89967fdc93ce4ab85dc7fba239b148a3c955cd782d8073. 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/QZMEV2264297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4212629f8b507f0476e4b38b7ada3c7c8f54560377b6bd8bafc11705d82e3f40. 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/QZES52273591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7ab86e99a2161260ab260cb0151b1b16ac5307fb6b2f60c2e4aecd58b2295b. 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/QZMEV2264301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062166fb712b670a3e2fd0ae28422604baa51d725993404a3b197c9b9f9829f7. 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/QZMEV2264303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c590842e9e4531a5a46516682bd6140090f6bfc0bda9b408ef9e660af9fd336. 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/QZMEV2264305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3524379a126b0aff25247852f6795064d7616981164ac43067e2767baef0f4. 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/QZL382203220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495a7d8ed42b3f6097e6617716297ee7eaa69ac51c00ef41294d055c79d77d89. 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/QZDA51943048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2c4a04775a95887a887056871f8dd18b6e2b2cd94119a4ce9d4b5ea46301d1. 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/QZDA51943052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddd9e5ebb3e5bc693d51e85465690cf1b9b2e927be2a09939f29ee7c6c78170. 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/QZDA51943053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327c953307b6e56c486b70f9474317ee6548a640b4a4c6624f58cbdfc4390dcd. 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/QZDA51943054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff2a21e6063965322c6d30817466a76601af3346b42a6e6d317ff696dd63c2b. 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/QZ93L1800652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6809b1b992845329c7cc2a2118b942268c84b4887c755c5a622cad7919fbacb6. 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/QZHNC2306104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4212629f8b507f0476e4b38b7ada3c7c8f54560377b6bd8bafc11705d82e3f40. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZES52273591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd92e857d2bde5a73fae84ee909a187d026a4ec21604adaa27da20560e9e8c7e. 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/USQY51708257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987e4667ab66d6e70440e1b0a275c2fdad0f6dc3de489131d6ebc1a47131c291. 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/USQY51708258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0be03193712135443a3cf15221af2e3527d3d5f3097ed6df36e83613ea98dc. 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/USQY51708259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa33734f247ea06641f5ad2a8e05f16176e2a3aaeb072c58cbff29f18ee1a79de. 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/USQY51708261.