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 0x55cd8b1e6fbbf223f8c3f9e9318d3f6e92a3533afefce5380df69ea533ecc0dc. 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/1d74d2f3-b640-4489-9ece-b5674c735a52.json and https://artists.proofprofile.net/proofs/artist/1d74d2f3-b640-4489-9ece-b5674c735a52.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 0xc8b02137de7775afb0508785aa13c58fd61bca7681f996bab56dbc7c0ca52fec. 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/QZTRX2363105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4abeae74c3eba6d0dcda657cc96f0f9090c5d8ae5f59f856a0a50320898c16d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTRX2363159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88f07fbb5f073c39ec3cc1cd221c038dcb2697a2ef1fed0d5617155e890ffcd. 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/QZ5FN2340846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29eab3957a031e15fb06c8273039e34bbc9e4f0186d7c88638bfa18a1b6d3773. 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/QZTRX2363178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a900f1d2f774c70e7be45505b7f5fdbad58abeaacf5e9e816066fce4f11239. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTRX2363184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b22039d3e020f6464b53abbfc94741f0ad6d0c746de355be000079f201d61f. 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/QZTRX2363194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70d37860c8d9037554a7010da898d9e8c4574d3b7f521f77811e312563b25e1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTRX2363204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cbfcf246100289024242fc598eda1f19aa9a855c8164efa6b95a0a065b759e. 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/GBWUL2282313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec8cb977fa7d6f8efa71d21195f9ac51b868040159e7b2a38d9012e0a6106db. 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/QZTRX2363218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0cbfcf246100289024242fc598eda1f19aa9a855c8164efa6b95a0a065b759e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBWUL2282313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c951fe0ae5f35d21ddb59e5d252965fe572d344eb789db05c1432286f29e78. 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/USLZJ2466353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed521536aba214d7223e9486ec2adfdcf5a28057764440342b97a9d8b26ea82. 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/QZZEB2304294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad415bd993dca4fbd4081fb581c6692f5d26c16e1955ae6c56997dcfb6fd7603. 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/USLZJ2466710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf0cce7462eab9dd3a17c07e6f16a5512e0cb43be0b7a514e4fdffdab5bf0ef. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USLZJ2466713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72e08ed4b7abeab08ad3ccf8b0502168dda72fe7000665418685a9aebb6f3ae. 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/USLZJ2466716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ffbf80c0302236d4b5aebe0568510f00757995aadde8eb468b8264048283961. 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/USLZJ2466718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24534abd1ec0df19804d6426db4294ad67ca92f3cec622b71c1d7d140773b971. 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/QZ5FN2317880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d92a869575c2b4132c72c2856107dc465404358262304aa37e358121b362ec. 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/USLZJ2466720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24534abd1ec0df19804d6426db4294ad67ca92f3cec622b71c1d7d140773b971. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QZ5FN2317880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9140679755fe180fbe79b9ef41d83d7cd155db9cf46fcf2d19386f066f8cb9f. 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/QZ5FN2368150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e07c0490bd197933f64d5e8314fe249128bcb70f20111b069863e7ec7a04689. 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/QZ5FN2368166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdab618e4acdfdebbf21fcb2b5b2f038fbb60cbe3762e020ba55ba2ab50ef3f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US38Y2507425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b8c2f139c0156c487eda874e4d2a942329ac4f18ec87e6a63a600bcc86dacf. 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/US38Y2507428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf90c11041ea5c4c191f0db18d7b136dd4aff5fc8e4f7e0a867792e7a5e76478. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US38Y2507429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0e8bbd4a08b5147b1bcf7bc6e948939888f5d890f8bef05b670e2f4bc71ade. 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/US38Y2507432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50417688d3f52800453fe8b973782ba0d82e84aedde38ce7df34d2cd0539f6b9. 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/US38Y2507434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccfac7e5f21430fcd3779543a64e22bdc87477b604f9d26f8fb084f923418022. 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/US38Y2507435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4648454ef197bc5985e2e799f15dbfca9c45f9660b71ae07488e887cce683a08. 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/US38Y2507436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82cb2d692952d933ab3a11f24942645afb39290d395240ecf0de163d40675ca. 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/US38Y2507439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb32f171f4247be133095194057474b1de868c7d0d22f90e4709f9f17f4c8f55. 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/TCAIE2457033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd83616dc22ac8564c397dc1e7d1165b31a537a139acec8337114a9fc1dff3f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZXLZ2355795.