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 0xf7674f1be9a08a3b65b7889239e5844eaa3611d30bde6394987c10a36a041061. 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/eea9769d-db42-4bc7-b7c2-6d96ed4b3363.json and https://artists.proofprofile.net/proofs/artist/eea9769d-db42-4bc7-b7c2-6d96ed4b3363.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 0x06b996ced72e3435842e05f6de5a3c931b46b2f63e66a2a40bcb74e838ceeb67. 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/UYM121501890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23eba98a2d8de21d2fc350d1c3c6d1fb03e6e2e7cf2e82525b6dad82535b5a1. 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/UYM121501391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adc0952c4734d9d8dca90783481df42d7f2c1ef887d9ffefc897243dd5030f6. 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/UYM121501881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359b56865f9d0312657d4400a222539f5ded10d69c11bfa87885d112255cfe9c. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ARG991021086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d1b8d2554fad1c31659b95ba6747e5f3b52bb212c1953f8b072ce883f873da. 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/ARG991021087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x796e9f39422c88210e52b5206d136497a1cc6db67735e13bd57b9d62e1ba40de. 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/ARG991021088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7364a0c26680e772dbfeef7a807bf31c00b67f37040947a67667db1b0f97c0f. 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/ARG991021089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2cb5c166309d54d08861aecb7d0c11e3e19be81545e8378c7f51437c3e30e4c. 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/ARG991021090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c270b43cdfcb7b95c6c124d48c901193a81519c562f97f2937be6ce8213f01. 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/ARG991021091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d2faef9ed5da58942720772d75b13c4e686ec4c6c284e96746287a4795ba9d. 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/ARG991021095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0963fffe73b0bd19c2785713e252e70a7c06a7f54c962d06114f46c8931c05. 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/UYM121600311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46c207b891c12004f87e1b96fdfb3468d38c428d384d8d105f93d5f0b10aa7a. 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/UYM121602753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd2b4880eb467855b2d668098a484f6e5186b3537e19ef99b4877e6b7e9f417. 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/UYM121203053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c7d1b5302c2447976f65211f856ab1f2371067e3c472c02cb657e4c228fc9c. 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/UYM121203057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78e2bc35b80131ac088c03612f37df688637d42b3fee2e9e56155168867364e. 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/UYM121600301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ca24f360aa7ebfb875b9ba47d083a9515d8993156cac061cce54dfeaae3e34. 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/UYM121600302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdc6d47d63b5446a1e196175ed2eb6b3696e3612870972b1b9ab98c421fc557. 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/UYM121600303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac73a148100935dba814f534f10b064f5b019e06bb37022cb696373ff6f16971. 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/UYM121600309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c285b6b49e8a6ef94da66244c8f4cf1406b318614f408b97a032a7c6799a3bc. 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/UYM122500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa266b9206266867e37ee0e2ca950a80ce3d6f5ba7efefd4b122df448ec062b. 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/UYM121806414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0963fffe73b0bd19c2785713e252e70a7c06a7f54c962d06114f46c8931c05. 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/UYM121600311.