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 0x326f69bfa5e8be072d4f41d1c1ca32bb9342ca6d00015c5c776b191517c5fd95. 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/f597bd0b-99d4-4e6b-944a-ae6f7a03ec2c.json and https://artists.proofprofile.net/proofs/artist/f597bd0b-99d4-4e6b-944a-ae6f7a03ec2c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Desce Tacando Bct X Sequência da Botação
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 0x814f49f6a3f5d69b6fe66af5536222b61974bfdbe232848ece51b779eaf96fed. 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/QZHZ42222326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe926840111ad5179179578a00d42f6fdcb8c2da3936f4b13b536ec9be57f0c0f. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QZHZ52295974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42346c11e2a492c4824cbe61bb998e357f05255f3a1c5e66592d244f65deb9f4. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/BC8182200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f048727e9652f1a384916abf9e4cf6f5394f75626691eeb614a358b3fde4637. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/BC8182200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15db5ef36a317680cec6b7d8181e914c01e395670153d266c72016d29bfcdcc4. 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/QZTVM2218411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fafd4bbc19118e0556d5180d08febb632747259ae386ff82d8a674f3609d7d4. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZGLM2312122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e756feb5d1ee56608447f3280f0b7830ea7bae51634292631290c76a7d0478. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:55:54Z), 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/BC3PG2300925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c38a1dc101214e785355a6ad4d6aa1c994c9e438688e0e175bb006a8abc5f1c. 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/QZTVM2378029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d83db7f43547ae0372f9dbaf541197d8972c51347b08fc9ec059bebdb971ed. 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/BRTRB2400848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878b7a126f3ba8877fca9dc235b79ee710ad59169ed35a20af1957ba7613f765. 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/BK3372300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958e45abf6f5c5d3b8010ede7df8fe2d01e7913668eb30b4f9dc07f6e8aaa221. 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/QZW9M2281713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd63024bb86d6a5340c22fd1697d6e428fe661e3c601decdf27006be0aeae75. 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/QZW9M2281722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff1d0a8d9b0035c12ac62e80711ddc27242c9508ee1ae5a78dbc055e5053c90. 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/BC65S2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e4eabe926f18a91ca9809c50b963d2e196fdd88d041a61883db7d410b17952. 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/BKEZ92300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59d662f3f2fd1c934075f2d95319c8b7242c14aac12d212fe00f87328a18e503. 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/QZNJV2468521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc020e1bbb1599dfafb2e1d91da46ddebd77bb5a26d99e34b8bac0c4e226604e9. 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/BKCMX2500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83f76c4b9dac3c3054065a7f7bd9a8af1ada93ccbd6297d3e0355350cc32af7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BKCMX2500053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c072c635a1a1f8ad5f94bfe694983857b9fc57751e1ad0eedc42ee40809450. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BX8WE2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fc2395bbd10c13f74dc8cf4399e2bb363b5247b9f3407cc38ec602f36195ea. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BX8WE2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a5c9d107d57108f505ee8734defbb9acbf1da9820ff2c34f68fceebf9b08a3. 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/BX8WE2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c45bd1602b0ca54f9d530bf85cd54b65b403d3c318bedc328f3c9b9f121718e. 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/BX8WE2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe036da93f58922e9b584f3f253f8bb7c6dcd441f14f140da581baf401401c934. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/BK3372300010.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4cddca992bab2cbef78a7dc79bd8314f9b0f8b865cc9edd732943afa2f797d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BX8WE2400012.