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 0xd462337d7f9f7aa8dd080b108c30827b889f4ab1b97d365075bbf1073b1c93c0. 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/fdd71f70-576f-4085-ae77-d3f16a2fff83.json and https://artists.proofprofile.net/proofs/artist/fdd71f70-576f-4085-ae77-d3f16a2fff83.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 0xa452cb04670e1424a25a20757eee84a4edc9638e72b6b2295db79b4d9d32b379. 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/GBSMU1658929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42353006e4470741ec0df81a521856ab47c504ec233a3ebb098998be26ad8171. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:02:49Z), 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/GBSMU1658931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57681e2deac9cedb9f5f29410edaf562fcb69b0973c51efae682e26f35a13005. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:31:37Z), 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/IEHHA1300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32047de390b0284604ec2e27a5fd2145c10a500b6b9eb5531adf16e4aa15a5b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBSMU1658956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf04062c128a1a5d66766dd5028d8f8e455f5bae625e8093feca80e9fd746cbb7. 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/GBSMU1701545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b298686ad515c6569be797155fb5296ddfa05546f0ca0c25dfa1224e684e94d. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/GBSMU1701546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddc7f9bace89bd356c9a143339cc96857c565e183f7d407a9de702401ca609e. 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/GBSMU3126303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x671164ddb8d8faf7fda8d0f714587db8c4bf254a9535dc83f0705d0eeee4aecb. 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/GBSMU3126306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42e39d8748100213b6e078c05f73e1034037e72bf098efc199f955eb47702d0e. 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/GBSMU3444057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e93802e73d363edcca82ba04ff73da109cf784080be65e066d05f0e39f1406. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:12:47Z), 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/GBSMU3899920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622dec794643419644b7f8857f47faa93b24ce1931218d86b5718140f610e7cd. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GBSMU4915301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89e93802e73d363edcca82ba04ff73da109cf784080be65e066d05f0e39f1406. 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/GBSMU3899920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622dec794643419644b7f8857f47faa93b24ce1931218d86b5718140f610e7cd. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:35:00Z), 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/GBSMU4915301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3716e3da3a73d9bdd88b4a7dcdf86266083c8aecd82b47d853535f1d610639b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZTB32282295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aaabd51cd3229337a5c3db890aaccba5bb16fb598c6a34bc78aa514536e3d75. 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/GBPS85399591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60e84285d9e4e25921d4632c614192a8f6b9e0cdf5d2f9593127e56a4900b05. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZPLS2361155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4e1530838a063b6032e2ca735be48d4f9200e24b860c231ce6cea5adb5f82b. 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/QZK6P2490205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037ba66d7e2d00bffef13351aef45569018c4876ace4c8dcd79663add7909b25. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZK6N2364288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9b8403fa113c795d9c91304022d9635e061a9784ef6386dadd015a0f5b85fa. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZPLS2358841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe9e8b80c32ebcf5607d457335d1ceeca7399e22d273af8358435a2a33f0a71. 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/QZHN92364981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e7a1fda65b8f103eb0030375063ce5f2be677e888e4555fcd5e4493fbe9f15. 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/QZFZ42385772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e1710fb33176b857747003058f53153892a8fa4dacf28a57a111e0434d3dbe. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GX89G2205580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d675bf502535b84bed5904cbc81b69f94361cbee8dd4395796012eeb54b686. 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/QT3EX2558095.