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 0xd9073b3646803150b317b3afe681db19c822cfbaa98d669172bb5fed03bb7c38. 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/8d4f7e2b-b4c4-48d3-ba30-ff1c6bd7ede8.json and https://artists.proofprofile.net/proofs/artist/8d4f7e2b-b4c4-48d3-ba30-ff1c6bd7ede8.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 0xe263849668137833a9a9915b2b00fe7e6574f94d469b6937692a9787997a8940. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/BRTRB2304009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83701838456c04d477b2a001160d0da9a9bcaa385aeba6c78d0ba8e5133238c3. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/BRTRB2306072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a0c5d13fdbb3e650a03b8f092734e909ba058f02bdc37a67355e7f29a36c0d. 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/BRTRB2307164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2336d94f1522fad2f9f6cf11ae7696331c73455a39f492fb6a37b4dd9c3a90. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRTRB2400775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c840d5ed5e429e68df1a52d093eb4df3f1adbaa242de42654c7a4112332def5. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRTRB2401569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aec3227eca330f8318f8c7a6885209a0c18894b2f618a61b8118f8be8cebeb. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:43:54Z), 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/BRTRB2402357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34f924ef157209261d777ee244710b74646f3ca1ddc67055388a34d164496ad. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRTRB2403075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdc1b0823430d312ebd8333d3962de192ee7d8213e6c582dfe98ae6c7f90eea. 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/QZNJX2488813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b48f91c669f2d5496582d219d49ee7b6f7abf0d3912d15b5f5cea3e1b1546cb. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZNJY2477632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83701838456c04d477b2a001160d0da9a9bcaa385aeba6c78d0ba8e5133238c3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/BRTRB2306072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62aec3227eca330f8318f8c7a6885209a0c18894b2f618a61b8118f8be8cebeb. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:09:47Z), 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/BRTRB2402357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a0c5d13fdbb3e650a03b8f092734e909ba058f02bdc37a67355e7f29a36c0d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BRTRB2307164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34f924ef157209261d777ee244710b74646f3ca1ddc67055388a34d164496ad. 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/BRTRB2403075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2336d94f1522fad2f9f6cf11ae7696331c73455a39f492fb6a37b4dd9c3a90. 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/BRTRB2400775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff04a92e3844e691b5fc99a61e2decc69fde43add0c05f67079053e0bed68fa. 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/QZNJY2477631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52488cb5dd045b1e80b64d0577eff29cc0be756b867a4e708560a854ccaf90c. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:59:02Z), 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/QZNJY2477636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c3ad418a08665292c58f14ad69d844205b422f6b3f3bc9e0b2e5f7493eb722. 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/QZW9L2441544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd450f0c151562debeb5961ed14f5b3e4f0e0651f3fbbeaadf9d63770abbe3a25. Chain 2 (Bitcoin): anchored in block 957745 (2026-07-12T19:20:20Z), 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/QZW9M2472323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce799c449a8ca41b3f16cb006e2c275cd25d9c6f67a8fb9216fd1a0efc83423. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZGLS2561610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17508716907e61d63b85189fea8f3dbf5210c08d00165803dbb645105e6d77f9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZMZ92590997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2915e73ec5303bed3b897424c55869716f7e3e9be9c5c45bfbefcdc039fb3c07. 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/QZNJW2538741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946fe2740cccfd04a0f8a83633f78a71c36c6f7394f6c38fc9218a8bea4da350. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNJZ2524391.